/***********************************************************************************
  Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.

  (c) Copyright 1996 - 2002  Gary Henderson (gary.henderson@ntlworld.com),
                             Jerremy Koot (jkoot@snes9x.com)

  (c) Copyright 2002 - 2004  Matthew Kendora

  (c) Copyright 2002 - 2005  Peter Bortas (peter@bortas.org)

  (c) Copyright 2004 - 2005  Joel Yliluoma (http://iki.fi/bisqwit/)

  (c) Copyright 2001 - 2006  John Weidman (jweidman@slip.net)

  (c) Copyright 2002 - 2006  funkyass (funkyass@spam.shaw.ca),
                             Kris Bleakley (codeviolation@hotmail.com)

  (c) Copyright 2002 - 2010  Brad Jorsch (anomie@users.sourceforge.net),
                             Nach (n-a-c-h@users.sourceforge.net),
                             zones (kasumitokoduck@yahoo.com)

  (c) Copyright 2006 - 2007  nitsuja

  (c) Copyright 2009 - 2010  BearOso,
                             OV2


  BS-X C emulator code
  (c) Copyright 2005 - 2006  Dreamer Nom,
                             zones

  C4 x86 assembler and some C emulation code
  (c) Copyright 2000 - 2003  _Demo_ (_demo_@zsnes.com),
                             Nach,
                             zsKnight (zsknight@zsnes.com)

  C4 C++ code
  (c) Copyright 2003 - 2006  Brad Jorsch,
                             Nach

  DSP-1 emulator code
  (c) Copyright 1998 - 2006  _Demo_,
                             Andreas Naive (andreasnaive@gmail.com),
                             Gary Henderson,
                             Ivar (ivar@snes9x.com),
                             John Weidman,
                             Kris Bleakley,
                             Matthew Kendora,
                             Nach,
                             neviksti (neviksti@hotmail.com)

  DSP-2 emulator code
  (c) Copyright 2003         John Weidman,
                             Kris Bleakley,
                             Lord Nightmare (lord_nightmare@users.sourceforge.net),
                             Matthew Kendora,
                             neviksti

  DSP-3 emulator code
  (c) Copyright 2003 - 2006  John Weidman,
                             Kris Bleakley,
                             Lancer,
                             z80 gaiden

  DSP-4 emulator code
  (c) Copyright 2004 - 2006  Dreamer Nom,
                             John Weidman,
                             Kris Bleakley,
                             Nach,
                             z80 gaiden

  OBC1 emulator code
  (c) Copyright 2001 - 2004  zsKnight,
                             pagefault (pagefault@zsnes.com),
                             Kris Bleakley
                             Ported from x86 assembler to C by sanmaiwashi

  SPC7110 and RTC C++ emulator code used in 1.39-1.51
  (c) Copyright 2002         Matthew Kendora with research by
                             zsKnight,
                             John Weidman,
                             Dark Force

  SPC7110 and RTC C++ emulator code used in 1.52+
  (c) Copyright 2009         byuu,
                             neviksti

  S-DD1 C emulator code
  (c) Copyright 2003         Brad Jorsch with research by
                             Andreas Naive,
                             John Weidman

  S-RTC C emulator code
  (c) Copyright 2001 - 2006  byuu,
                             John Weidman

  ST010 C++ emulator code
  (c) Copyright 2003         Feather,
                             John Weidman,
                             Kris Bleakley,
                             Matthew Kendora

  Super FX x86 assembler emulator code
  (c) Copyright 1998 - 2003  _Demo_,
                             pagefault,
                             zsKnight

  Super FX C emulator code
  (c) Copyright 1997 - 1999  Ivar,
                             Gary Henderson,
                             John Weidman

  Sound emulator code used in 1.5-1.51
  (c) Copyright 1998 - 2003  Brad Martin
  (c) Copyright 1998 - 2006  Charles Bilyue'

  Sound emulator code used in 1.52+
  (c) Copyright 2004 - 2007  Shay Green (gblargg@gmail.com)

  SH assembler code partly based on x86 assembler code
  (c) Copyright 2002 - 2004  Marcus Comstedt (marcus@mc.pp.se)

  2xSaI filter
  (c) Copyright 1999 - 2001  Derek Liauw Kie Fa

  HQ2x, HQ3x, HQ4x filters
  (c) Copyright 2003         Maxim Stepin (maxim@hiend3d.com)

  NTSC filter
  (c) Copyright 2006 - 2007  Shay Green

  GTK+ GUI code
  (c) Copyright 2004 - 2010  BearOso

  Win32 GUI code
  (c) Copyright 2003 - 2006  blip,
                             funkyass,
                             Matthew Kendora,
                             Nach,
                             nitsuja
  (c) Copyright 2009 - 2010  OV2

  Mac OS GUI code
  (c) Copyright 1998 - 2001  John Stiles
  (c) Copyright 2001 - 2010  zones

  (c) Copyright 2010 - 2016 Daniel De Matteis. (UNDER NO CIRCUMSTANCE 
  WILL COMMERCIAL RIGHTS EVER BE APPROPRIATED TO ANY PARTY)

  Specific ports contains the works of other authors. See headers in
  individual files.


  Snes9x homepage: http://www.snes9x.com/

  Permission to use, copy, modify and/or distribute Snes9x in both binary
  and source form, for non-commercial purposes, is hereby granted without
  fee, providing that this license information and copyright notice appear
  with all copies and any derived work.

  This software is provided 'as-is', without any express or implied
  warranty. In no event shall the authors be held liable for any damages
  arising from the use of this software or it's derivatives.

  Snes9x is freeware for PERSONAL USE only. Commercial users should
  seek permission of the copyright holders first. Commercial use includes,
  but is not limited to, charging money for Snes9x or software derived from
  Snes9x, including Snes9x or derivatives in commercial game bundles, and/or
  using Snes9x as a promotion for your commercial product.

  The copyright holders request that bug fixes and improvements to the code
  should be forwarded to them so everyone can benefit from the modifications
  in future versions.

  Super NES and Super Nintendo Entertainment System are trademarks of
  Nintendo Co., Limited and its subsidiary companies.
 ***********************************************************************************/

#include <string.h>
#include <stdint.h>

#include "port.h"
#include "dsp.h"

#ifndef TRUE
#define TRUE  1
#endif
#ifndef FALSE
#define FALSE 0
#endif

uint8_t	(*GetDSP) (uint16_t)        = NULL;
void	(*SetDSP) (uint8_t, uint16_t) = NULL;


void S9xResetDSP (void)
{
	memset(&DSP1, 0, sizeof(DSP1));
	DSP1.waiting4command = TRUE;
	DSP1.first_parameter = TRUE;

	memset(&DSP2, 0, sizeof(DSP2));
	DSP2.waiting4command = TRUE;

	memset(&DSP3, 0, sizeof(DSP3));
	DSP3_Reset();

	memset(&DSP4, 0, sizeof(DSP4));
	DSP4.waiting4command = TRUE;
}

uint8_t S9xGetDSP (uint16_t address)
{
	return ((*GetDSP)(address));
}

void S9xSetDSP (uint8_t byte, uint16_t address)
{

	(*SetDSP)(byte, address);
}

/***********************************************************************************
 DSP1
***********************************************************************************/

static const uint16_t	DSP1ROM[1024] =
{
	 0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,
	 0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,
	 0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,
	 0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,
	 0x0000,  0x0000,  0x0001,  0x0002,  0x0004,  0x0008,  0x0010,  0x0020,
	 0x0040,  0x0080,  0x0100,  0x0200,  0x0400,  0x0800,  0x1000,  0x2000,
	 0x4000,  0x7fff,  0x4000,  0x2000,  0x1000,  0x0800,  0x0400,  0x0200,
	 0x0100,  0x0080,  0x0040,  0x0020,  0x0001,  0x0008,  0x0004,  0x0002,
	 0x0001,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,
	 0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,
	 0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,
	 0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,  0x0000,
	 0x0000,  0x0000,  0x8000,  0xffe5,  0x0100,  0x7fff,  0x7f02,  0x7e08,
	 0x7d12,  0x7c1f,  0x7b30,  0x7a45,  0x795d,  0x7878,  0x7797,  0x76ba,
	 0x75df,  0x7507,  0x7433,  0x7361,  0x7293,  0x71c7,  0x70fe,  0x7038,
	 0x6f75,  0x6eb4,  0x6df6,  0x6d3a,  0x6c81,  0x6bca,  0x6b16,  0x6a64,
	 0x69b4,  0x6907,  0x685b,  0x67b2,  0x670b,  0x6666,  0x65c4,  0x6523,
	 0x6484,  0x63e7,  0x634c,  0x62b3,  0x621c,  0x6186,  0x60f2,  0x6060,
	 0x5fd0,  0x5f41,  0x5eb5,  0x5e29,  0x5d9f,  0x5d17,  0x5c91,  0x5c0c,
	 0x5b88,  0x5b06,  0x5a85,  0x5a06,  0x5988,  0x590b,  0x5890,  0x5816,
	 0x579d,  0x5726,  0x56b0,  0x563b,  0x55c8,  0x5555,  0x54e4,  0x5474,
	 0x5405,  0x5398,  0x532b,  0x52bf,  0x5255,  0x51ec,  0x5183,  0x511c,
	 0x50b6,  0x5050,  0x4fec,  0x4f89,  0x4f26,  0x4ec5,  0x4e64,  0x4e05,
	 0x4da6,  0x4d48,  0x4cec,  0x4c90,  0x4c34,  0x4bda,  0x4b81,  0x4b28,
	 0x4ad0,  0x4a79,  0x4a23,  0x49cd,  0x4979,  0x4925,  0x48d1,  0x487f,
	 0x482d,  0x47dc,  0x478c,  0x473c,  0x46ed,  0x469f,  0x4651,  0x4604,
	 0x45b8,  0x456c,  0x4521,  0x44d7,  0x448d,  0x4444,  0x43fc,  0x43b4,
	 0x436d,  0x4326,  0x42e0,  0x429a,  0x4255,  0x4211,  0x41cd,  0x4189,
	 0x4146,  0x4104,  0x40c2,  0x4081,  0x4040,  0x3fff,  0x41f7,  0x43e1,
	 0x45bd,  0x478d,  0x4951,  0x4b0b,  0x4cbb,  0x4e61,  0x4fff,  0x5194,
	 0x5322,  0x54a9,  0x5628,  0x57a2,  0x5914,  0x5a81,  0x5be9,  0x5d4a,
	 0x5ea7,  0x5fff,  0x6152,  0x62a0,  0x63ea,  0x6530,  0x6672,  0x67b0,
	 0x68ea,  0x6a20,  0x6b53,  0x6c83,  0x6daf,  0x6ed9,  0x6fff,  0x7122,
	 0x7242,  0x735f,  0x747a,  0x7592,  0x76a7,  0x77ba,  0x78cb,  0x79d9,
	 0x7ae5,  0x7bee,  0x7cf5,  0x7dfa,  0x7efe,  0x7fff,  0x0000,  0x0324,
	 0x0647,  0x096a,  0x0c8b,  0x0fab,  0x12c8,  0x15e2,  0x18f8,  0x1c0b,
	 0x1f19,  0x2223,  0x2528,  0x2826,  0x2b1f,  0x2e11,  0x30fb,  0x33de,
	 0x36ba,  0x398c,  0x3c56,  0x3f17,  0x41ce,  0x447a,  0x471c,  0x49b4,
	 0x4c3f,  0x4ebf,  0x5133,  0x539b,  0x55f5,  0x5842,  0x5a82,  0x5cb4,
	 0x5ed7,  0x60ec,  0x62f2,  0x64e8,  0x66cf,  0x68a6,  0x6a6d,  0x6c24,
	 0x6dca,  0x6f5f,  0x70e2,  0x7255,  0x73b5,  0x7504,  0x7641,  0x776c,
	 0x7884,  0x798a,  0x7a7d,  0x7b5d,  0x7c29,  0x7ce3,  0x7d8a,  0x7e1d,
	 0x7e9d,  0x7f09,  0x7f62,  0x7fa7,  0x7fd8,  0x7ff6,  0x7fff,  0x7ff6,
	 0x7fd8,  0x7fa7,  0x7f62,  0x7f09,  0x7e9d,  0x7e1d,  0x7d8a,  0x7ce3,
	 0x7c29,  0x7b5d,  0x7a7d,  0x798a,  0x7884,  0x776c,  0x7641,  0x7504,
	 0x73b5,  0x7255,  0x70e2,  0x6f5f,  0x6dca,  0x6c24,  0x6a6d,  0x68a6,
	 0x66cf,  0x64e8,  0x62f2,  0x60ec,  0x5ed7,  0x5cb4,  0x5a82,  0x5842,
	 0x55f5,  0x539b,  0x5133,  0x4ebf,  0x4c3f,  0x49b4,  0x471c,  0x447a,
	 0x41ce,  0x3f17,  0x3c56,  0x398c,  0x36ba,  0x33de,  0x30fb,  0x2e11,
	 0x2b1f,  0x2826,  0x2528,  0x2223,  0x1f19,  0x1c0b,  0x18f8,  0x15e2,
	 0x12c8,  0x0fab,  0x0c8b,  0x096a,  0x0647,  0x0324,  0x7fff,  0x7ff6,
	 0x7fd8,  0x7fa7,  0x7f62,  0x7f09,  0x7e9d,  0x7e1d,  0x7d8a,  0x7ce3,
	 0x7c29,  0x7b5d,  0x7a7d,  0x798a,  0x7884,  0x776c,  0x7641,  0x7504,
	 0x73b5,  0x7255,  0x70e2,  0x6f5f,  0x6dca,  0x6c24,  0x6a6d,  0x68a6,
	 0x66cf,  0x64e8,  0x62f2,  0x60ec,  0x5ed7,  0x5cb4,  0x5a82,  0x5842,
	 0x55f5,  0x539b,  0x5133,  0x4ebf,  0x4c3f,  0x49b4,  0x471c,  0x447a,
	 0x41ce,  0x3f17,  0x3c56,  0x398c,  0x36ba,  0x33de,  0x30fb,  0x2e11,
	 0x2b1f,  0x2826,  0x2528,  0x2223,  0x1f19,  0x1c0b,  0x18f8,  0x15e2,
	 0x12c8,  0x0fab,  0x0c8b,  0x096a,  0x0647,  0x0324,  0x0000,  0xfcdc,
	 0xf9b9,  0xf696,  0xf375,  0xf055,  0xed38,  0xea1e,  0xe708,  0xe3f5,
	 0xe0e7,  0xdddd,  0xdad8,  0xd7da,  0xd4e1,  0xd1ef,  0xcf05,  0xcc22,
	 0xc946,  0xc674,  0xc3aa,  0xc0e9,  0xbe32,  0xbb86,  0xb8e4,  0xb64c,
	 0xb3c1,  0xb141,  0xaecd,  0xac65,  0xaa0b,  0xa7be,  0xa57e,  0xa34c,
	 0xa129,  0x9f14,  0x9d0e,  0x9b18,  0x9931,  0x975a,  0x9593,  0x93dc,
	 0x9236,  0x90a1,  0x8f1e,  0x8dab,  0x8c4b,  0x8afc,  0x89bf,  0x8894,
	 0x877c,  0x8676,  0x8583,  0x84a3,  0x83d7,  0x831d,  0x8276,  0x81e3,
	 0x8163,  0x80f7,  0x809e,  0x8059,  0x8028,  0x800a,  0x6488,  0x0080,
	 0x03ff,  0x0116,  0x0002,  0x0080,  0x4000,  0x3fd7,  0x3faf,  0x3f86,
	 0x3f5d,  0x3f34,  0x3f0c,  0x3ee3,  0x3eba,  0x3e91,  0x3e68,  0x3e40,
	 0x3e17,  0x3dee,  0x3dc5,  0x3d9c,  0x3d74,  0x3d4b,  0x3d22,  0x3cf9,
	 0x3cd0,  0x3ca7,  0x3c7f,  0x3c56,  0x3c2d,  0x3c04,  0x3bdb,  0x3bb2,
	 0x3b89,  0x3b60,  0x3b37,  0x3b0e,  0x3ae5,  0x3abc,  0x3a93,  0x3a69,
	 0x3a40,  0x3a17,  0x39ee,  0x39c5,  0x399c,  0x3972,  0x3949,  0x3920,
	 0x38f6,  0x38cd,  0x38a4,  0x387a,  0x3851,  0x3827,  0x37fe,  0x37d4,
	 0x37aa,  0x3781,  0x3757,  0x372d,  0x3704,  0x36da,  0x36b0,  0x3686,
	 0x365c,  0x3632,  0x3609,  0x35df,  0x35b4,  0x358a,  0x3560,  0x3536,
	 0x350c,  0x34e1,  0x34b7,  0x348d,  0x3462,  0x3438,  0x340d,  0x33e3,
	 0x33b8,  0x338d,  0x3363,  0x3338,  0x330d,  0x32e2,  0x32b7,  0x328c,
	 0x3261,  0x3236,  0x320b,  0x31df,  0x31b4,  0x3188,  0x315d,  0x3131,
	 0x3106,  0x30da,  0x30ae,  0x3083,  0x3057,  0x302b,  0x2fff,  0x2fd2,
	 0x2fa6,  0x2f7a,  0x2f4d,  0x2f21,  0x2ef4,  0x2ec8,  0x2e9b,  0x2e6e,
	 0x2e41,  0x2e14,  0x2de7,  0x2dba,  0x2d8d,  0x2d60,  0x2d32,  0x2d05,
	 0x2cd7,  0x2ca9,  0x2c7b,  0x2c4d,  0x2c1f,  0x2bf1,  0x2bc3,  0x2b94,
	 0x2b66,  0x2b37,  0x2b09,  0x2ada,  0x2aab,  0x2a7c,  0x2a4c,  0x2a1d,
	 0x29ed,  0x29be,  0x298e,  0x295e,  0x292e,  0x28fe,  0x28ce,  0x289d,
	 0x286d,  0x283c,  0x280b,  0x27da,  0x27a9,  0x2777,  0x2746,  0x2714,
	 0x26e2,  0x26b0,  0x267e,  0x264c,  0x2619,  0x25e7,  0x25b4,  0x2581,
	 0x254d,  0x251a,  0x24e6,  0x24b2,  0x247e,  0x244a,  0x2415,  0x23e1,
	 0x23ac,  0x2376,  0x2341,  0x230b,  0x22d6,  0x229f,  0x2269,  0x2232,
	 0x21fc,  0x21c4,  0x218d,  0x2155,  0x211d,  0x20e5,  0x20ad,  0x2074,
	 0x203b,  0x2001,  0x1fc7,  0x1f8d,  0x1f53,  0x1f18,  0x1edd,  0x1ea1,
	 0x1e66,  0x1e29,  0x1ded,  0x1db0,  0x1d72,  0x1d35,  0x1cf6,  0x1cb8,
	 0x1c79,  0x1c39,  0x1bf9,  0x1bb8,  0x1b77,  0x1b36,  0x1af4,  0x1ab1,
	 0x1a6e,  0x1a2a,  0x19e6,  0x19a1,  0x195c,  0x1915,  0x18ce,  0x1887,
	 0x183f,  0x17f5,  0x17ac,  0x1761,  0x1715,  0x16c9,  0x167c,  0x162e,
	 0x15df,  0x158e,  0x153d,  0x14eb,  0x1497,  0x1442,  0x13ec,  0x1395,
	 0x133c,  0x12e2,  0x1286,  0x1228,  0x11c9,  0x1167,  0x1104,  0x109e,
	 0x1036,  0x0fcc,  0x0f5f,  0x0eef,  0x0e7b,  0x0e04,  0x0d89,  0x0d0a,
	 0x0c86,  0x0bfd,  0x0b6d,  0x0ad6,  0x0a36,  0x098d,  0x08d7,  0x0811,
	 0x0736,  0x063e,  0x0519,  0x039a,  0x0000,  0x7fff,  0x0100,  0x0080,
	 0x021d,  0x00c8,  0x00ce,  0x0048,  0x0a26,  0x277a,  0x00ce,  0x6488,
	 0x14ac,  0x0001,  0x00f9,  0x00fc,  0x00ff,  0x00fc,  0x00f9,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,
	 0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff,  0xffff
};

static const int16_t	DSP1_MulTable[256] =
{
	 0x0000,  0x0003,  0x0006,  0x0009,  0x000c,  0x000f,  0x0012,  0x0015,
	 0x0019,  0x001c,  0x001f,  0x0022,  0x0025,  0x0028,  0x002b,  0x002f,
	 0x0032,  0x0035,  0x0038,  0x003b,  0x003e,  0x0041,  0x0045,  0x0048,
	 0x004b,  0x004e,  0x0051,  0x0054,  0x0057,  0x005b,  0x005e,  0x0061,
	 0x0064,  0x0067,  0x006a,  0x006d,  0x0071,  0x0074,  0x0077,  0x007a,
	 0x007d,  0x0080,  0x0083,  0x0087,  0x008a,  0x008d,  0x0090,  0x0093,
	 0x0096,  0x0099,  0x009d,  0x00a0,  0x00a3,  0x00a6,  0x00a9,  0x00ac,
	 0x00af,  0x00b3,  0x00b6,  0x00b9,  0x00bc,  0x00bf,  0x00c2,  0x00c5,
	 0x00c9,  0x00cc,  0x00cf,  0x00d2,  0x00d5,  0x00d8,  0x00db,  0x00df,
	 0x00e2,  0x00e5,  0x00e8,  0x00eb,  0x00ee,  0x00f1,  0x00f5,  0x00f8,
	 0x00fb,  0x00fe,  0x0101,  0x0104,  0x0107,  0x010b,  0x010e,  0x0111,
	 0x0114,  0x0117,  0x011a,  0x011d,  0x0121,  0x0124,  0x0127,  0x012a,
	 0x012d,  0x0130,  0x0133,  0x0137,  0x013a,  0x013d,  0x0140,  0x0143,
	 0x0146,  0x0149,  0x014d,  0x0150,  0x0153,  0x0156,  0x0159,  0x015c,
	 0x015f,  0x0163,  0x0166,  0x0169,  0x016c,  0x016f,  0x0172,  0x0175,
	 0x0178,  0x017c,  0x017f,  0x0182,  0x0185,  0x0188,  0x018b,  0x018e,
	 0x0192,  0x0195,  0x0198,  0x019b,  0x019e,  0x01a1,  0x01a4,  0x01a8,
	 0x01ab,  0x01ae,  0x01b1,  0x01b4,  0x01b7,  0x01ba,  0x01be,  0x01c1,
	 0x01c4,  0x01c7,  0x01ca,  0x01cd,  0x01d0,  0x01d4,  0x01d7,  0x01da,
	 0x01dd,  0x01e0,  0x01e3,  0x01e6,  0x01ea,  0x01ed,  0x01f0,  0x01f3,
	 0x01f6,  0x01f9,  0x01fc,  0x0200,  0x0203,  0x0206,  0x0209,  0x020c,
	 0x020f,  0x0212,  0x0216,  0x0219,  0x021c,  0x021f,  0x0222,  0x0225,
	 0x0228,  0x022c,  0x022f,  0x0232,  0x0235,  0x0238,  0x023b,  0x023e,
	 0x0242,  0x0245,  0x0248,  0x024b,  0x024e,  0x0251,  0x0254,  0x0258,
	 0x025b,  0x025e,  0x0261,  0x0264,  0x0267,  0x026a,  0x026e,  0x0271,
	 0x0274,  0x0277,  0x027a,  0x027d,  0x0280,  0x0284,  0x0287,  0x028a,
	 0x028d,  0x0290,  0x0293,  0x0296,  0x029a,  0x029d,  0x02a0,  0x02a3,
	 0x02a6,  0x02a9,  0x02ac,  0x02b0,  0x02b3,  0x02b6,  0x02b9,  0x02bc,
	 0x02bf,  0x02c2,  0x02c6,  0x02c9,  0x02cc,  0x02cf,  0x02d2,  0x02d5,
	 0x02d8,  0x02db,  0x02df,  0x02e2,  0x02e5,  0x02e8,  0x02eb,  0x02ee,
	 0x02f1,  0x02f5,  0x02f8,  0x02fb,  0x02fe,  0x0301,  0x0304,  0x0307,
	 0x030b,  0x030e,  0x0311,  0x0314,  0x0317,  0x031a,  0x031d,  0x0321
};

static const int16_t	DSP1_SinTable[256] =
{
	 0x0000,  0x0324,  0x0647,  0x096a,  0x0c8b,  0x0fab,  0x12c8,  0x15e2,
	 0x18f8,  0x1c0b,  0x1f19,  0x2223,  0x2528,  0x2826,  0x2b1f,  0x2e11,
	 0x30fb,  0x33de,  0x36ba,  0x398c,  0x3c56,  0x3f17,  0x41ce,  0x447a,
	 0x471c,  0x49b4,  0x4c3f,  0x4ebf,  0x5133,  0x539b,  0x55f5,  0x5842,
	 0x5a82,  0x5cb4,  0x5ed7,  0x60ec,  0x62f2,  0x64e8,  0x66cf,  0x68a6,
	 0x6a6d,  0x6c24,  0x6dca,  0x6f5f,  0x70e2,  0x7255,  0x73b5,  0x7504,
	 0x7641,  0x776c,  0x7884,  0x798a,  0x7a7d,  0x7b5d,  0x7c29,  0x7ce3,
	 0x7d8a,  0x7e1d,  0x7e9d,  0x7f09,  0x7f62,  0x7fa7,  0x7fd8,  0x7ff6,
	 0x7fff,  0x7ff6,  0x7fd8,  0x7fa7,  0x7f62,  0x7f09,  0x7e9d,  0x7e1d,
	 0x7d8a,  0x7ce3,  0x7c29,  0x7b5d,  0x7a7d,  0x798a,  0x7884,  0x776c,
	 0x7641,  0x7504,  0x73b5,  0x7255,  0x70e2,  0x6f5f,  0x6dca,  0x6c24,
	 0x6a6d,  0x68a6,  0x66cf,  0x64e8,  0x62f2,  0x60ec,  0x5ed7,  0x5cb4,
	 0x5a82,  0x5842,  0x55f5,  0x539b,  0x5133,  0x4ebf,  0x4c3f,  0x49b4,
	 0x471c,  0x447a,  0x41ce,  0x3f17,  0x3c56,  0x398c,  0x36ba,  0x33de,
	 0x30fb,  0x2e11,  0x2b1f,  0x2826,  0x2528,  0x2223,  0x1f19,  0x1c0b,
	 0x18f8,  0x15e2,  0x12c8,  0x0fab,  0x0c8b,  0x096a,  0x0647,  0x0324,
	-0x0000, -0x0324, -0x0647, -0x096a, -0x0c8b, -0x0fab, -0x12c8, -0x15e2,
	-0x18f8, -0x1c0b, -0x1f19, -0x2223, -0x2528, -0x2826, -0x2b1f, -0x2e11,
	-0x30fb, -0x33de, -0x36ba, -0x398c, -0x3c56, -0x3f17, -0x41ce, -0x447a,
	-0x471c, -0x49b4, -0x4c3f, -0x4ebf, -0x5133, -0x539b, -0x55f5, -0x5842,
	-0x5a82, -0x5cb4, -0x5ed7, -0x60ec, -0x62f2, -0x64e8, -0x66cf, -0x68a6,
	-0x6a6d, -0x6c24, -0x6dca, -0x6f5f, -0x70e2, -0x7255, -0x73b5, -0x7504,
	-0x7641, -0x776c, -0x7884, -0x798a, -0x7a7d, -0x7b5d, -0x7c29, -0x7ce3,
	-0x7d8a, -0x7e1d, -0x7e9d, -0x7f09, -0x7f62, -0x7fa7, -0x7fd8, -0x7ff6,
	-0x7fff, -0x7ff6, -0x7fd8, -0x7fa7, -0x7f62, -0x7f09, -0x7e9d, -0x7e1d,
	-0x7d8a, -0x7ce3, -0x7c29, -0x7b5d, -0x7a7d, -0x798a, -0x7884, -0x776c,
	-0x7641, -0x7504, -0x73b5, -0x7255, -0x70e2, -0x6f5f, -0x6dca, -0x6c24,
	-0x6a6d, -0x68a6, -0x66cf, -0x64e8, -0x62f2, -0x60ec, -0x5ed7, -0x5cb4,
	-0x5a82, -0x5842, -0x55f5, -0x539b, -0x5133, -0x4ebf, -0x4c3f, -0x49b4,
	-0x471c, -0x447a, -0x41ce, -0x3f17, -0x3c56, -0x398c, -0x36ba, -0x33de,
	-0x30fb, -0x2e11, -0x2b1f, -0x2826, -0x2528, -0x2223, -0x1f19, -0x1c0b,
	-0x18f8, -0x15e2, -0x12c8, -0x0fab, -0x0c8b, -0x096a, -0x0647, -0x0324
};


static void DSP1_Op00 (void)
{
	DSP1.Op00Result = DSP1.Op00Multiplicand * DSP1.Op00Multiplier >> 15;

}

static void DSP1_Op20 (void)
{
	DSP1.Op20Result = DSP1.Op20Multiplicand * DSP1.Op20Multiplier >> 15;
	/* Bit-exact with the uPD7725 firmware (verified against ares/MiSTer LLE):
	 * command 0x20 shares the multiply routine used by command 0x00, entered
	 * with accumulator A holding the low bit left over from the command
	 * dispatcher, and the routine ORs that residue into the result (A | m).
	 * The net effect is to force bit 0, i.e. "|= 1", NOT an increment: for
	 * odd products "++" would carry into higher bits and diverge from hardware. */
	DSP1.Op20Result |= 1;

}

static void DSP1_Inverse (int16_t Coefficient, int16_t Exponent, int16_t *iCoefficient, int16_t *iExponent)
{
	/* Step One: Division by Zero */
	if (Coefficient == 0x0000)
	{
		*iCoefficient = 0x7fff;
		*iExponent    = 0x002f;
	}
	else
	{
		int16_t	Sign = 1;

		/* Step Two: Remove Sign */
		if (Coefficient < 0)
		{
			if (Coefficient < -32767)
				Coefficient = -32767;
			Coefficient = -Coefficient;
			Sign = -1;
		}

		/* Step Three: Normalize*/
#ifdef __GNUC__
		{
			const int shift = __builtin_clz(Coefficient) - (8 * sizeof(int) - 15);
			Coefficient <<= shift;
			Exponent -= shift;
		}
#else
		while (Coefficient < 0x4000)
		{
			Coefficient <<= 1;
			Exponent--;
		}
#endif

		/* Step Four: Special Case*/
		if (Coefficient == 0x4000)
		{
			if (Sign == 1)
				*iCoefficient =  0x7fff;
			else
			{
				*iCoefficient = -0x4000;
				Exponent--;
			}
		}
		else
		{
			/* Step Five: Initial Guess*/
			int16_t	i = DSP1ROM[((Coefficient - 0x4000) >> 7) + 0x0065];

			/* Step Six: Iterate "estimated" Newton's Method*/
			i = (i + (-i * (Coefficient * i >> 15) >> 15)) << 1;
			i = (i + (-i * (Coefficient * i >> 15) >> 15)) << 1;

			*iCoefficient = i * Sign;
		}

		*iExponent = 1 - Exponent;
	}
}

static void DSP1_Op10 (void)
{
	DSP1_Inverse(DSP1.Op10Coefficient, DSP1.Op10Exponent, &DSP1.Op10CoefficientR, &DSP1.Op10ExponentR);

}

/* DSP1_Sin / DSP1_Cos: lookup-table sine / cosine for the DSP-1
 * coprocessor's projection / matrix math. Used at ~20 sites in
 * DSP1's per-frame matrix routines (Pilotwings, Super Mario Kart's
 * mode-7-like effects, Ace o Nerae, etc.).
 *
 * Plain expression macros. The earlier statement-expression form
 * captured Angle into a local but used a GCC extension that older
 * MSVC rejects. Here Angle is referenced several times, so the
 * macro relies on its argument being side-effect-free — all
 * current call sites pass struct member reads, which is safe.
 *
 * The two-stage helpers (_DSP1_Sin_lookup / _DSP1_Cos_lookup)
 * factor the table-and-multiply expression so that the saturating
 * "is the sum out of range" test does not have to literally
 * duplicate the multiply in the source. The preprocessor still
 * expands the body twice, but both copies are syntactically
 * identical and the compiler will CSE them for the simple variable
 * inputs all current call sites use.
 *
 * Non-recursive sine: the original code recursed for negative
 * angles; here we detect the sign, work on |Angle| through the
 * lookup, and negate the result at the end. */
#define _DSP1_Sin_lookup(mag) \
	( DSP1_SinTable[(mag) >> 8] + \
	  (DSP1_MulTable[(mag) & 0xff] * DSP1_SinTable[0x40 + ((mag) >> 8)] >> 15) )

#define _DSP1_Sin_sat(mag) \
	( _DSP1_Sin_lookup(mag) > 32767 ? 32767 : _DSP1_Sin_lookup(mag) )

#define DSP1_Sin(Angle) \
	( (Angle) == -32768 ? (int16_t) 0 \
	  : (Angle) < 0 \
	      ? (int16_t) -_DSP1_Sin_sat(-(int32_t)(Angle)) \
	      : (int16_t)  _DSP1_Sin_sat( (int32_t)(Angle)) )

#define _DSP1_Cos_lookup(mag) \
	( DSP1_SinTable[0x40 + ((mag) >> 8)] - \
	  (DSP1_MulTable[(mag) & 0xff] * DSP1_SinTable[(mag) >> 8] >> 15) )

#define _DSP1_Cos_sat(mag) \
	( _DSP1_Cos_lookup(mag) < -32768 ? -32767 : _DSP1_Cos_lookup(mag) )

#define DSP1_Cos(Angle) \
	( (Angle) == -32768 ? (int16_t) -32768 \
	  : (int16_t) _DSP1_Cos_sat((Angle) < 0 ? -(int32_t)(Angle) : (int32_t)(Angle)) )

static void DSP1_Normalize (int16_t m, int16_t *Coefficient, int16_t *Exponent)
{
	int16_t i, e;

	e = 0;

#ifdef __GNUC__
	i = m < 0 ? ~m : m;

	if (i == 0)
		e = 15;
	else
		e = __builtin_clz(i) - (8 * sizeof(int) - 15);
#else
	i = 0x4000;

	if (m < 0)
	{
		while ((m & i) && i)
		{
			i >>= 1;
			e++;
		}
	}
	else
	{
		while (!(m & i) && i)
		{
			i >>= 1;
			e++;
		}
	}
#endif

	if (e > 0)
		*Coefficient = m * DSP1ROM[0x21 + e] << 1;
	else
		*Coefficient = m;

	*Exponent -= e;
}

static void DSP1_NormalizeDouble (int32_t Product, int16_t *Coefficient, int16_t *Exponent)
{
	int16_t n, m, i,e;

	n = Product & 0x7fff;
	m = Product >> 15;
	e = 0;

#ifdef __GNUC__
	i = m < 0 ? ~m : m;

	if (i == 0)
		e = 15;
	else
		e = __builtin_clz(i) - (8 * sizeof(int) - 15);
#else
	i = 0x4000;

	if (m < 0)
	{
		while ((m & i) && i)
		{
			i >>= 1;
			e++;
		}
	}
	else
	{
		while (!(m & i) && i)
		{
			i >>= 1;
			e++;
		}
	}
#endif

	if (e > 0)
	{
		*Coefficient = m * DSP1ROM[0x0021 + e] << 1;

		if (e < 15)
			*Coefficient += n * DSP1ROM[0x0040 - e] >> 15;
		else
		{
#ifdef __GNUC__
			i = m < 0 ? ~(n | 0x8000) : n;

			if (i == 0)
				e += 15;
			else
				e += __builtin_clz(i) - (8 * sizeof(int) - 15);
#else
			i = 0x4000;

			if (m < 0)
			{
				while ((n & i) && i)
				{
					i >>= 1;
					e++;
				}
			}
			else
			{
				while (!(n & i) && i)
				{
					i >>= 1;
					e++;
				}
			}
#endif

			if (e > 15)
				*Coefficient = n * DSP1ROM[0x0012 + e] << 1;
			else
				*Coefficient += n;
		}
	}
	else
		*Coefficient = m;

	*Exponent = e;
}

static int16_t DSP1_Truncate (int16_t C, int16_t E)
{
	if (E > 0)
	{
		if (C > 0)
			return (32767);
		else
		if (C < 0)
			return (-32767);
	}
	else
	{
		if (E < 0)
			return (C * DSP1ROM[0x0031 + E] >> 15);
	}

	return (C);
}

static void DSP1_Op04 (void)
{
	DSP1.Op04Sin = DSP1_Sin(DSP1.Op04Angle) * DSP1.Op04Radius >> 15;
	DSP1.Op04Cos = DSP1_Cos(DSP1.Op04Angle) * DSP1.Op04Radius >> 15;
}

static void DSP1_Op0C (void)
{
	DSP1.Op0CX2 = (DSP1.Op0CY1 * DSP1_Sin(DSP1.Op0CA) >> 15) + (DSP1.Op0CX1 * DSP1_Cos(DSP1.Op0CA) >> 15);
	DSP1.Op0CY2 = (DSP1.Op0CY1 * DSP1_Cos(DSP1.Op0CA) >> 15) - (DSP1.Op0CX1 * DSP1_Sin(DSP1.Op0CA) >> 15);
}

static void DSP1_Parameter (int16_t Fx, int16_t Fy, int16_t Fz, int16_t Lfe, int16_t Les, int16_t Aas, int16_t Azs, int16_t *Vof, int16_t *Vva, int16_t *Cx, int16_t *Cy)
{
	static const int16_t	MaxAZS_Exp[16] =
	{
		0x38b4, 0x38b7, 0x38ba, 0x38be, 0x38c0, 0x38c4, 0x38c7, 0x38ca,
		0x38ce,	0x38d0, 0x38d4, 0x38d7, 0x38da, 0x38dd, 0x38e0, 0x38e4
	};

	int16_t	CSec, C, E, MaxAZS, Aux;
	int16_t	LfeNx, LfeNy, LfeNz;
	int16_t	LesNx, LesNy, LesNz;
	int16_t	CentreZ, AZS;

	/* Copy Zenith angle for clipping*/
	AZS = Azs;

	/* Store Sine and Cosine of Azimuth and Zenith angle*/
	DSP1.SinAas = DSP1_Sin(Aas);
	DSP1.CosAas = DSP1_Cos(Aas);
	DSP1.SinAzs = DSP1_Sin(Azs);
	DSP1.CosAzs = DSP1_Cos(Azs);

	DSP1.Nx = DSP1.SinAzs * -DSP1.SinAas >> 15;
	DSP1.Ny = DSP1.SinAzs *  DSP1.CosAas >> 15;
	DSP1.Nz = DSP1.CosAzs *  0x7fff >> 15;

	LfeNx = Lfe * DSP1.Nx >> 15;
	LfeNy = Lfe * DSP1.Ny >> 15;
	LfeNz = Lfe * DSP1.Nz >> 15;

	/* Center of Projection*/
	DSP1.CentreX = Fx + LfeNx;
	DSP1.CentreY = Fy + LfeNy;
	CentreZ = Fz + LfeNz;

	LesNx = Les * DSP1.Nx >> 15;
	LesNy = Les * DSP1.Ny >> 15;
	LesNz = Les * DSP1.Nz >> 15;

	DSP1.Gx = DSP1.CentreX - LesNx;
	DSP1.Gy = DSP1.CentreY - LesNy;
	DSP1.Gz = CentreZ - LesNz;

	DSP1.E_Les = 0;
	DSP1_Normalize(Les, &DSP1.C_Les, &DSP1.E_Les);
	DSP1.G_Les = Les;

	E = 0;
	DSP1_Normalize(CentreZ, &C, &E);

	DSP1.VPlane_C = C;
	DSP1.VPlane_E = E;

	/* Determine clip boundary and clip Zenith angle if necessary*/
	MaxAZS = MaxAZS_Exp[-E];

	if (AZS < 0)
	{
		MaxAZS = -MaxAZS;
		if (AZS < MaxAZS + 1)
			AZS = MaxAZS + 1;
	}
	else
	{
		if (AZS > MaxAZS)
			AZS = MaxAZS;
	}

	/* Store Sine and Cosine of clipped Zenith angle*/
	DSP1.SinAZS = DSP1_Sin(AZS);
	DSP1.CosAZS = DSP1_Cos(AZS);

	DSP1_Inverse(DSP1.CosAZS, 0, &DSP1.SecAZS_C1, &DSP1.SecAZS_E1);
	DSP1_Normalize(C * DSP1.SecAZS_C1 >> 15, &C, &E);
	E += DSP1.SecAZS_E1;

	C = DSP1_Truncate(C, E) * DSP1.SinAZS >> 15;

	DSP1.CentreX += C * DSP1.SinAas >> 15;
	DSP1.CentreY -= C * DSP1.CosAas >> 15;

	*Cx = DSP1.CentreX;
	*Cy = DSP1.CentreY;

	/* Raster number of imaginary center and horizontal line*/
	*Vof = 0;

	if ((Azs != AZS) || (Azs == MaxAZS))
	{
		if (Azs == -32768)
			Azs = -32767;

		C = Azs - MaxAZS;
		if (C >= 0)
			C--;
		Aux = ~(C << 2);

		C = Aux * DSP1ROM[0x0328] >> 15;
		C = (C * Aux >> 15) + DSP1ROM[0x0327];
		*Vof -= (C * Aux >> 15) * Les >> 15;

		C = Aux * Aux >> 15;
		Aux = (C * DSP1ROM[0x0324] >> 15) + DSP1ROM[0x0325];
		DSP1.CosAZS += (C * Aux >> 15) * DSP1.CosAZS >> 15;
	}

	DSP1.VOffset = Les * DSP1.CosAZS >> 15;

	DSP1_Inverse(DSP1.SinAZS, 0, &CSec, &E);
	DSP1_Normalize(DSP1.VOffset, &C, &E);
	DSP1_Normalize(C * CSec >> 15, &C, &E);

	if (C == -32768)
	{
		C >>= 1;
		E++;
	}

	*Vva = DSP1_Truncate(-C, E);

	/* Store Secant of clipped Zenith angle*/
	DSP1_Inverse(DSP1.CosAZS, 0, &DSP1.SecAZS_C2, &DSP1.SecAZS_E2);
}

static void DSP1_Raster (int16_t Vs, int16_t *An, int16_t *Bn, int16_t *Cn, int16_t *Dn)
{
	int16_t	C, E, C1, E1;

	DSP1_Inverse((Vs * DSP1.SinAzs >> 15) + DSP1.VOffset, 7, &C, &E);
	E += DSP1.VPlane_E;

	C1 = C * DSP1.VPlane_C >> 15;
	E1 = E + DSP1.SecAZS_E2;

	DSP1_Normalize(C1, &C, &E);

	C = DSP1_Truncate(C, E);

	*An = C *  DSP1.CosAas >> 15;
	*Cn = C *  DSP1.SinAas >> 15;

	DSP1_Normalize(C1 * DSP1.SecAZS_C2 >> 15, &C, &E1);

	C = DSP1_Truncate(C, E1);

	*Bn = C * -DSP1.SinAas >> 15;
	*Dn = C *  DSP1.CosAas >> 15;
}

static void DSP1_Op02 (void)
{
	DSP1_Parameter(DSP1.Op02FX, DSP1.Op02FY, DSP1.Op02FZ, DSP1.Op02LFE, DSP1.Op02LES, DSP1.Op02AAS, DSP1.Op02AZS, &DSP1.Op02VOF, &DSP1.Op02VVA, &DSP1.Op02CX, &DSP1.Op02CY);
}

static void DSP1_Op0A (void)
{
	DSP1_Raster(DSP1.Op0AVS, &DSP1.Op0AA, &DSP1.Op0AB, &DSP1.Op0AC, &DSP1.Op0AD);
	DSP1.Op0AVS++;
}

static int16_t DSP1_ShiftR (int16_t C, int16_t E)
{
	return (C * DSP1ROM[0x0031 + E] >> 15);
}

static void DSP1_Project (int16_t X, int16_t Y, int16_t Z, int16_t *H, int16_t *V, int16_t *M)
{
	int32_t	aux, aux4;
	int16_t	E, E2, E3, E4, E5, refE, E6, E7;
	int16_t	C2, C4, C6, C8, C9, C10, C11, C12, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25, C26;
	int16_t	Px, Py, Pz;

	E4 = E3 = E2 = E = E5 = 0;

	DSP1_NormalizeDouble((int32_t) X - DSP1.Gx, &Px, &E4);
	DSP1_NormalizeDouble((int32_t) Y - DSP1.Gy, &Py, &E );
	DSP1_NormalizeDouble((int32_t) Z - DSP1.Gz, &Pz, &E3);
	Px >>= 1; /* to avoid overflows when calculating the scalar products*/
	E4--;
	Py >>= 1;
	E--;
	Pz >>= 1;
	E3--;

	refE = (E < E3) ? E : E3;
	refE = (refE < E4) ? refE : E4;

	Px = DSP1_ShiftR(Px, E4 - refE); /* normalize them to the same exponent*/
	Py = DSP1_ShiftR(Py, E  - refE);
	Pz = DSP1_ShiftR(Pz, E3 - refE);

	C11 =- (Px * DSP1.Nx >> 15);
	C8  =- (Py * DSP1.Ny >> 15);
	C9  =- (Pz * DSP1.Nz >> 15);
	C12 = C11 + C8 + C9; /* this cannot overflow!*/

	aux4 = C12; /* de-normalization with 32-bits arithmetic*/
	refE = 16 - refE; /* refE can be up to 3*/
	if (refE >= 0)
		aux4 <<=  (refE);
	else
		aux4 >>= -(refE);
	if (aux4 == -1)
		aux4 = 0; /* why?*/
	aux4 >>= 1;

	aux = ((uint16_t) DSP1.G_Les) + aux4; /* Les - the scalar product of P with the normal vector of the screen*/
	DSP1_NormalizeDouble(aux, &C10, &E2);
	E2 = 15 - E2;

	DSP1_Inverse(C10, 0, &C4, &E4);
	C2 = C4 * DSP1.C_Les >> 15; /* scale factor*/

	/* H*/
	E7 = 0;
	C16 = Px * ( DSP1.CosAas *  0x7fff >> 15) >> 15;
	C20 = Py * ( DSP1.SinAas *  0x7fff >> 15) >> 15;
	C17 = C16 + C20; /* scalar product of P with the normalized horizontal vector of the screen...*/

	C18 = C17 * C2 >> 15; /* ... multiplied by the scale factor*/
	DSP1_Normalize(C18, &C19, &E7);
	*H = DSP1_Truncate(C19, DSP1.E_Les - E2 + refE + E7);

	/* V*/
	E6 = 0;
	C21 = Px * ( DSP1.CosAzs * -DSP1.SinAas >> 15) >> 15;
	C22 = Py * ( DSP1.CosAzs *  DSP1.CosAas >> 15) >> 15;
	C23 = Pz * (-DSP1.SinAzs *  0x7fff >> 15) >> 15;
	C24 = C21 + C22 + C23; /* scalar product of P with the normalized vertical vector of the screen...*/

	C26 = C24 * C2 >> 15; /* ... multiplied by the scale factor*/
	DSP1_Normalize(C26, &C25, &E6);
	*V = DSP1_Truncate(C25, DSP1.E_Les - E2 + refE + E6);

	/* M*/
	DSP1_Normalize(C2, &C6, &E4);
	*M = DSP1_Truncate(C6, E4 + DSP1.E_Les - E2 - 7); /* M is the scale factor divided by 2^7*/
}

static void DSP1_Op06 (void)
{
	DSP1_Project(DSP1.Op06X, DSP1.Op06Y, DSP1.Op06Z, &DSP1.Op06H, &DSP1.Op06V, &DSP1.Op06M);
}

static void DSP1_Op01 (void)
{
	int16_t SinAz, CosAz, SinAy, CosAy, SinAx, CosAx;

	SinAz = DSP1_Sin(DSP1.Op01Zr);
	CosAz = DSP1_Cos(DSP1.Op01Zr);
	SinAy = DSP1_Sin(DSP1.Op01Yr);
	CosAy = DSP1_Cos(DSP1.Op01Yr);
	SinAx = DSP1_Sin(DSP1.Op01Xr);
	CosAx = DSP1_Cos(DSP1.Op01Xr);

	DSP1.Op01m >>= 1;

	DSP1.matrixA[0][0] =   (DSP1.Op01m * CosAz >> 15) * CosAy >> 15;
	DSP1.matrixA[0][1] = -((DSP1.Op01m * SinAz >> 15) * CosAy >> 15);
	DSP1.matrixA[0][2] =    DSP1.Op01m * SinAy >> 15;

	DSP1.matrixA[1][0] =  ((DSP1.Op01m * SinAz >> 15) * CosAx >> 15) + (((DSP1.Op01m * CosAz >> 15) * SinAx >> 15) * SinAy >> 15);
	DSP1.matrixA[1][1] =  ((DSP1.Op01m * CosAz >> 15) * CosAx >> 15) - (((DSP1.Op01m * SinAz >> 15) * SinAx >> 15) * SinAy >> 15);
	DSP1.matrixA[1][2] = -((DSP1.Op01m * SinAx >> 15) * CosAy >> 15);

	DSP1.matrixA[2][0] =  ((DSP1.Op01m * SinAz >> 15) * SinAx >> 15) - (((DSP1.Op01m * CosAz >> 15) * CosAx >> 15) * SinAy >> 15);
	DSP1.matrixA[2][1] =  ((DSP1.Op01m * CosAz >> 15) * SinAx >> 15) + (((DSP1.Op01m * SinAz >> 15) * CosAx >> 15) * SinAy >> 15);
	DSP1.matrixA[2][2] =   (DSP1.Op01m * CosAx >> 15) * CosAy >> 15;
}

static void DSP1_Op11 (void)
{
	int16_t SinAz, CosAz, SinAy, CosAy, SinAx, CosAx;

	SinAz = DSP1_Sin(DSP1.Op11Zr);
	CosAz = DSP1_Cos(DSP1.Op11Zr);
	SinAy = DSP1_Sin(DSP1.Op11Yr);
	CosAy = DSP1_Cos(DSP1.Op11Yr);
	SinAx = DSP1_Sin(DSP1.Op11Xr);
	CosAx = DSP1_Cos(DSP1.Op11Xr);

	DSP1.Op11m >>= 1;

	DSP1.matrixB[0][0] =   (DSP1.Op11m * CosAz >> 15) * CosAy >> 15;
	DSP1.matrixB[0][1] = -((DSP1.Op11m * SinAz >> 15) * CosAy >> 15);
	DSP1.matrixB[0][2] =    DSP1.Op11m * SinAy >> 15;

	DSP1.matrixB[1][0] =  ((DSP1.Op11m * SinAz >> 15) * CosAx >> 15) + (((DSP1.Op11m * CosAz >> 15) * SinAx >> 15) * SinAy >> 15);
	DSP1.matrixB[1][1] =  ((DSP1.Op11m * CosAz >> 15) * CosAx >> 15) - (((DSP1.Op11m * SinAz >> 15) * SinAx >> 15) * SinAy >> 15);
	DSP1.matrixB[1][2] = -((DSP1.Op11m * SinAx >> 15) * CosAy >> 15);

	DSP1.matrixB[2][0] =  ((DSP1.Op11m * SinAz >> 15) * SinAx >> 15) - (((DSP1.Op11m * CosAz >> 15) * CosAx >> 15) * SinAy >> 15);
	DSP1.matrixB[2][1] =  ((DSP1.Op11m * CosAz >> 15) * SinAx >> 15) + (((DSP1.Op11m * SinAz >> 15) * CosAx >> 15) * SinAy >> 15);
	DSP1.matrixB[2][2] =   (DSP1.Op11m * CosAx >> 15) * CosAy >> 15;
}

static void DSP1_Op21 (void)
{
	int16_t SinAz, CosAz, SinAy, CosAy, SinAx, CosAx;

	SinAz = DSP1_Sin(DSP1.Op21Zr);
	CosAz = DSP1_Cos(DSP1.Op21Zr);
	SinAy = DSP1_Sin(DSP1.Op21Yr);
	CosAy = DSP1_Cos(DSP1.Op21Yr);
	SinAx = DSP1_Sin(DSP1.Op21Xr);
	CosAx = DSP1_Cos(DSP1.Op21Xr);

	DSP1.Op21m >>= 1;

	DSP1.matrixC[0][0] =   (DSP1.Op21m * CosAz >> 15) * CosAy >> 15;
	DSP1.matrixC[0][1] = -((DSP1.Op21m * SinAz >> 15) * CosAy >> 15);
	DSP1.matrixC[0][2] =    DSP1.Op21m * SinAy >> 15;

	DSP1.matrixC[1][0] =  ((DSP1.Op21m * SinAz >> 15) * CosAx >> 15) + (((DSP1.Op21m * CosAz >> 15) * SinAx >> 15) * SinAy >> 15);
	DSP1.matrixC[1][1] =  ((DSP1.Op21m * CosAz >> 15) * CosAx >> 15) - (((DSP1.Op21m * SinAz >> 15) * SinAx >> 15) * SinAy >> 15);
	DSP1.matrixC[1][2] = -((DSP1.Op21m * SinAx >> 15) * CosAy >> 15);

	DSP1.matrixC[2][0] =  ((DSP1.Op21m * SinAz >> 15) * SinAx >> 15) - (((DSP1.Op21m * CosAz >> 15) * CosAx >> 15) * SinAy >> 15);
	DSP1.matrixC[2][1] =  ((DSP1.Op21m * CosAz >> 15) * SinAx >> 15) + (((DSP1.Op21m * SinAz >> 15) * CosAx >> 15) * SinAy >> 15);
	DSP1.matrixC[2][2] =   (DSP1.Op21m * CosAx >> 15) * CosAy >> 15;
}

static void DSP1_Op0D (void)
{
	DSP1.Op0DF = (DSP1.Op0DX * DSP1.matrixA[0][0] >> 15) + (DSP1.Op0DY * DSP1.matrixA[0][1] >> 15) + (DSP1.Op0DZ * DSP1.matrixA[0][2] >> 15);
	DSP1.Op0DL = (DSP1.Op0DX * DSP1.matrixA[1][0] >> 15) + (DSP1.Op0DY * DSP1.matrixA[1][1] >> 15) + (DSP1.Op0DZ * DSP1.matrixA[1][2] >> 15);
	DSP1.Op0DU = (DSP1.Op0DX * DSP1.matrixA[2][0] >> 15) + (DSP1.Op0DY * DSP1.matrixA[2][1] >> 15) + (DSP1.Op0DZ * DSP1.matrixA[2][2] >> 15);

}

static void DSP1_Op1D (void)
{
	DSP1.Op1DF = (DSP1.Op1DX * DSP1.matrixB[0][0] >> 15) + (DSP1.Op1DY * DSP1.matrixB[0][1] >> 15) + (DSP1.Op1DZ * DSP1.matrixB[0][2] >> 15);
	DSP1.Op1DL = (DSP1.Op1DX * DSP1.matrixB[1][0] >> 15) + (DSP1.Op1DY * DSP1.matrixB[1][1] >> 15) + (DSP1.Op1DZ * DSP1.matrixB[1][2] >> 15);
	DSP1.Op1DU = (DSP1.Op1DX * DSP1.matrixB[2][0] >> 15) + (DSP1.Op1DY * DSP1.matrixB[2][1] >> 15) + (DSP1.Op1DZ * DSP1.matrixB[2][2] >> 15);

}

static void DSP1_Op2D (void)
{
	DSP1.Op2DF = (DSP1.Op2DX * DSP1.matrixC[0][0] >> 15) + (DSP1.Op2DY * DSP1.matrixC[0][1] >> 15) + (DSP1.Op2DZ * DSP1.matrixC[0][2] >> 15);
	DSP1.Op2DL = (DSP1.Op2DX * DSP1.matrixC[1][0] >> 15) + (DSP1.Op2DY * DSP1.matrixC[1][1] >> 15) + (DSP1.Op2DZ * DSP1.matrixC[1][2] >> 15);
	DSP1.Op2DU = (DSP1.Op2DX * DSP1.matrixC[2][0] >> 15) + (DSP1.Op2DY * DSP1.matrixC[2][1] >> 15) + (DSP1.Op2DZ * DSP1.matrixC[2][2] >> 15);

}

static void DSP1_Op03 (void)
{
	DSP1.Op03X = (DSP1.Op03F * DSP1.matrixA[0][0] >> 15) + (DSP1.Op03L * DSP1.matrixA[1][0] >> 15) + (DSP1.Op03U * DSP1.matrixA[2][0] >> 15);
	DSP1.Op03Y = (DSP1.Op03F * DSP1.matrixA[0][1] >> 15) + (DSP1.Op03L * DSP1.matrixA[1][1] >> 15) + (DSP1.Op03U * DSP1.matrixA[2][1] >> 15);
	DSP1.Op03Z = (DSP1.Op03F * DSP1.matrixA[0][2] >> 15) + (DSP1.Op03L * DSP1.matrixA[1][2] >> 15) + (DSP1.Op03U * DSP1.matrixA[2][2] >> 15);

}

static void DSP1_Op13 (void)
{
	DSP1.Op13X = (DSP1.Op13F * DSP1.matrixB[0][0] >> 15) + (DSP1.Op13L * DSP1.matrixB[1][0] >> 15) + (DSP1.Op13U * DSP1.matrixB[2][0] >> 15);
	DSP1.Op13Y = (DSP1.Op13F * DSP1.matrixB[0][1] >> 15) + (DSP1.Op13L * DSP1.matrixB[1][1] >> 15) + (DSP1.Op13U * DSP1.matrixB[2][1] >> 15);
	DSP1.Op13Z = (DSP1.Op13F * DSP1.matrixB[0][2] >> 15) + (DSP1.Op13L * DSP1.matrixB[1][2] >> 15) + (DSP1.Op13U * DSP1.matrixB[2][2] >> 15);

}

static void DSP1_Op23 (void)
{
	DSP1.Op23X = (DSP1.Op23F * DSP1.matrixC[0][0] >> 15) + (DSP1.Op23L * DSP1.matrixC[1][0] >> 15) + (DSP1.Op23U * DSP1.matrixC[2][0] >> 15);
	DSP1.Op23Y = (DSP1.Op23F * DSP1.matrixC[0][1] >> 15) + (DSP1.Op23L * DSP1.matrixC[1][1] >> 15) + (DSP1.Op23U * DSP1.matrixC[2][1] >> 15);
	DSP1.Op23Z = (DSP1.Op23F * DSP1.matrixC[0][2] >> 15) + (DSP1.Op23L * DSP1.matrixC[1][2] >> 15) + (DSP1.Op23U * DSP1.matrixC[2][2] >> 15);

}

static void DSP1_Op14 (void)
{
	int16_t	CSec, ESec, CTan, CSin, C, E;

	DSP1_Inverse(DSP1_Cos(DSP1.Op14Xr), 0, &CSec, &ESec);

	/* Rotation Around Z*/
	DSP1_NormalizeDouble(DSP1.Op14U * DSP1_Cos(DSP1.Op14Yr) - DSP1.Op14F * DSP1_Sin(DSP1.Op14Yr), &C, &E);

	E = ESec - E;

	DSP1_Normalize(C * CSec >> 15, &C, &E);

	DSP1.Op14Zrr = DSP1.Op14Zr + DSP1_Truncate(C, E);

	/* Rotation Around X*/
	DSP1.Op14Xrr = DSP1.Op14Xr + (DSP1.Op14U * DSP1_Sin(DSP1.Op14Yr) >> 15) + (DSP1.Op14F * DSP1_Cos(DSP1.Op14Yr) >> 15);

	/* Rotation Around Y*/
	DSP1_NormalizeDouble(DSP1.Op14U * DSP1_Cos(DSP1.Op14Yr) + DSP1.Op14F * DSP1_Sin(DSP1.Op14Yr), &C, &E);

	E = ESec - E;

	DSP1_Normalize(DSP1_Sin(DSP1.Op14Xr), &CSin, &E);

	CTan = CSec * CSin >> 15;

	DSP1_Normalize(-(C * CTan >> 15), &C, &E);

	DSP1.Op14Yrr = DSP1.Op14Yr + DSP1_Truncate(C, E) + DSP1.Op14L;
}

static void DSP1_Target (int16_t H, int16_t V, int16_t *X, int16_t *Y)
{
	int16_t	C, E, C1, E1;

	DSP1_Inverse((V * DSP1.SinAzs >> 15) + DSP1.VOffset, 8, &C, &E);
	E += DSP1.VPlane_E;

	C1 = C * DSP1.VPlane_C >> 15;
	E1 = E + DSP1.SecAZS_E1;

	H <<= 8;

	DSP1_Normalize(C1, &C, &E);

	C = DSP1_Truncate(C, E) * H >> 15;

	*X = DSP1.CentreX + (C * DSP1.CosAas >> 15);
	*Y = DSP1.CentreY - (C * DSP1.SinAas >> 15);

	V <<= 8;

	DSP1_Normalize(C1 * DSP1.SecAZS_C1 >> 15, &C, &E1);

	C = DSP1_Truncate(C, E1) * V >> 15;

	*X += C * -DSP1.SinAas >> 15;
	*Y += C *  DSP1.CosAas >> 15;
}

static void DSP1_Op0E (void)
{
	DSP1_Target(DSP1.Op0EH, DSP1.Op0EV, &DSP1.Op0EX, &DSP1.Op0EY);
}

static void DSP1_Op0B (void)
{
	DSP1.Op0BS = (DSP1.Op0BX * DSP1.matrixA[0][0] + DSP1.Op0BY * DSP1.matrixA[0][1] + DSP1.Op0BZ * DSP1.matrixA[0][2]) >> 15;

}

static void DSP1_Op1B (void)
{
	DSP1.Op1BS = (DSP1.Op1BX * DSP1.matrixB[0][0] + DSP1.Op1BY * DSP1.matrixB[0][1] + DSP1.Op1BZ * DSP1.matrixB[0][2]) >> 15;

}

static void DSP1_Op2B (void)
{
	DSP1.Op2BS = (DSP1.Op2BX * DSP1.matrixC[0][0] + DSP1.Op2BY * DSP1.matrixC[0][1] + DSP1.Op2BZ * DSP1.matrixC[0][2]) >> 15;

}

static void DSP1_Op08 (void)
{
	int32_t	op08Size = (DSP1.Op08X * DSP1.Op08X + DSP1.Op08Y * DSP1.Op08Y + DSP1.Op08Z * DSP1.Op08Z) << 1;
	DSP1.Op08Ll =  op08Size        & 0xffff;
	DSP1.Op08Lh = (op08Size >> 16) & 0xffff;

}

static void DSP1_Op18 (void)
{
	DSP1.Op18D = (DSP1.Op18X * DSP1.Op18X + DSP1.Op18Y * DSP1.Op18Y + DSP1.Op18Z * DSP1.Op18Z - DSP1.Op18R * DSP1.Op18R) >> 15;

}

static void DSP1_Op38 (void)
{
	DSP1.Op38D = (DSP1.Op38X * DSP1.Op38X + DSP1.Op38Y * DSP1.Op38Y + DSP1.Op38Z * DSP1.Op38Z - DSP1.Op38R * DSP1.Op38R) >> 15;
	DSP1.Op38D++;

}

static void DSP1_Op28 (void)
{
	int32_t	Radius = DSP1.Op28X * DSP1.Op28X + DSP1.Op28Y * DSP1.Op28Y + DSP1.Op28Z * DSP1.Op28Z;

	if (Radius == 0)
		DSP1.Op28R = 0;
	else
	{
		int16_t	C, E, Pos, Node1, Node2;

		DSP1_NormalizeDouble(Radius, &C, &E);
		if (E & 1)
			C = C * 0x4000 >> 15;

		Pos = C * 0x0040 >> 15;

		Node1 = DSP1ROM[0x00d5 + Pos];
		Node2 = DSP1ROM[0x00d6 + Pos];

		DSP1.Op28R = ((Node2 - Node1) * (C & 0x1ff) >> 9) + Node1;
		DSP1.Op28R >>= (E >> 1);
	}

}

static void DSP1_Op1C (void)
{
	/* Rotate Around Op1CZ1*/
	DSP1.Op1CX1 = (DSP1.Op1CYBR * DSP1_Sin(DSP1.Op1CZ) >> 15) + (DSP1.Op1CXBR * DSP1_Cos(DSP1.Op1CZ) >> 15);
	DSP1.Op1CY1 = (DSP1.Op1CYBR * DSP1_Cos(DSP1.Op1CZ) >> 15) - (DSP1.Op1CXBR * DSP1_Sin(DSP1.Op1CZ) >> 15);
	DSP1.Op1CXBR = DSP1.Op1CX1;
	DSP1.Op1CYBR = DSP1.Op1CY1;

	/* Rotate Around Op1CY1*/
	DSP1.Op1CZ1 = (DSP1.Op1CXBR * DSP1_Sin(DSP1.Op1CY) >> 15) + (DSP1.Op1CZBR * DSP1_Cos(DSP1.Op1CY) >> 15);
	DSP1.Op1CX1 = (DSP1.Op1CXBR * DSP1_Cos(DSP1.Op1CY) >> 15) - (DSP1.Op1CZBR * DSP1_Sin(DSP1.Op1CY) >> 15);
	DSP1.Op1CXAR = DSP1.Op1CX1;
	DSP1.Op1CZBR = DSP1.Op1CZ1;

	/* Rotate Around Op1CX1*/
	DSP1.Op1CY1 = (DSP1.Op1CZBR * DSP1_Sin(DSP1.Op1CX) >> 15) + (DSP1.Op1CYBR * DSP1_Cos(DSP1.Op1CX) >> 15);
	DSP1.Op1CZ1 = (DSP1.Op1CZBR * DSP1_Cos(DSP1.Op1CX) >> 15) - (DSP1.Op1CYBR * DSP1_Sin(DSP1.Op1CX) >> 15);
	DSP1.Op1CYAR = DSP1.Op1CY1;
	DSP1.Op1CZAR = DSP1.Op1CZ1;

}

static void DSP1_Op0F (void)
{
	DSP1.Op0FPass = 0x0000;

}

static void DSP1_Op2F (void)
{
	DSP1.Op2FSize = 0x100;
}

void DSP1SetByte (uint8_t byte, uint16_t address)
{
	if (address < DSP0.boundary)
	{
		if ((DSP1.command == 0x0A || DSP1.command == 0x1A) && DSP1.out_count != 0)
		{
			DSP1.out_count--;
			DSP1.out_index++;
			return;
		}
		else
		if (DSP1.waiting4command)
		{
			DSP1.command         = byte;
			DSP1.in_index        = 0;
			DSP1.waiting4command = FALSE;
			DSP1.first_parameter = TRUE;

			switch (byte)
			{
				case 0x00: DSP1.in_count = 2; break;
				case 0x30:
				case 0x10: DSP1.in_count = 2; break;
				case 0x20: DSP1.in_count = 2; break;
				case 0x24:
				case 0x04: DSP1.in_count = 2; break;
				case 0x08: DSP1.in_count = 3; break;
				case 0x18: DSP1.in_count = 4; break;
				case 0x28: DSP1.in_count = 3; break;
				case 0x38: DSP1.in_count = 4; break;
				case 0x2c:
				case 0x0c: DSP1.in_count = 3; break;
				case 0x3c:
				case 0x1c: DSP1.in_count = 6; break;
				case 0x32:
				case 0x22:
				case 0x12:
				case 0x02: DSP1.in_count = 7; break;
				case 0x0a: DSP1.in_count = 1; break;
				case 0x3a:
				case 0x2a:
				case 0x1a:
					DSP1.command = 0x1a;
					DSP1.in_count = 1;
					break;
				case 0x16:
				case 0x26:
				case 0x36:
				case 0x06: DSP1.in_count = 3; break;
				case 0x1e:
				case 0x2e:
				case 0x3e:
				case 0x0e: DSP1.in_count = 2; break;
				case 0x05:
				case 0x35:
				case 0x31:
				case 0x01: DSP1.in_count = 4; break;
				case 0x15:
				case 0x11: DSP1.in_count = 4; break;
				case 0x25:
				case 0x21: DSP1.in_count = 4; break;
				case 0x09:
				case 0x39:
				case 0x3d:
				case 0x0d: DSP1.in_count = 3; break;
				case 0x19:
				case 0x1d: DSP1.in_count = 3; break;
				case 0x29:
				case 0x2d: DSP1.in_count = 3; break;
				case 0x33:
				case 0x03: DSP1.in_count = 3; break;
				case 0x13: DSP1.in_count = 3; break;
				case 0x23: DSP1.in_count = 3; break;
				case 0x3b:
				case 0x0b: DSP1.in_count = 3; break;
				case 0x1b: DSP1.in_count = 3; break;
				case 0x2b: DSP1.in_count = 3; break;
				case 0x34:
				case 0x14: DSP1.in_count = 6; break;
				case 0x07:
				case 0x0f: DSP1.in_count = 1; break;
				case 0x27:
				case 0x2F: DSP1.in_count = 1; break;
				case 0x17:
				case 0x37:
				case 0x3F:
					DSP1.command = 0x1f;
					/* fallthrough */
				case 0x1f: DSP1.in_count = 1; break;
				default:
				case 0x80:
					DSP1.in_count        = 0;
					DSP1.waiting4command = TRUE;
					DSP1.first_parameter = TRUE;
					break;
			}

			DSP1.in_count <<= 1;
		}
		else
		{
			DSP1.parameters[DSP1.in_index] = byte;
			DSP1.first_parameter = FALSE;
			DSP1.in_index++;
		}

		if (DSP1.waiting4command || (DSP1.first_parameter && byte == 0x80))
		{
			DSP1.waiting4command = TRUE;
			DSP1.first_parameter = FALSE;
		}
		else
		if (DSP1.first_parameter && (DSP1.in_count != 0 || (DSP1.in_count == 0 && DSP1.in_index == 0)))
			;
		else
		{
			if (DSP1.in_count)
			{
				if (--DSP1.in_count == 0)
				{
					/* Actually execute the command*/
					DSP1.waiting4command = TRUE;
					DSP1.out_index       = 0;

					switch (DSP1.command)
					{
						case 0x1f:
							DSP1.out_count = 2048;
							break;

						case 0x00: /* Multiple*/
							DSP1.Op00Multiplicand = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op00Multiplier   = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));

							DSP1_Op00();

							DSP1.out_count = 2;
							DSP1.output[0] =  DSP1.Op00Result       & 0xFF;
							DSP1.output[1] = (DSP1.Op00Result >> 8) & 0xFF;
							break;

						case 0x20: /* Multiple*/
							DSP1.Op20Multiplicand = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op20Multiplier   = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));

							DSP1_Op20();

							DSP1.out_count = 2;
							DSP1.output[0] =  DSP1.Op20Result       & 0xFF;
							DSP1.output[1] = (DSP1.Op20Result >> 8) & 0xFF;
							break;

						case 0x30:
						case 0x10: /* Inverse*/
							DSP1.Op10Coefficient = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op10Exponent    = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));

							DSP1_Op10();

							DSP1.out_count = 4;
							DSP1.output[0] = (uint8_t) ( ((int16_t) DSP1.Op10CoefficientR)       & 0xFF);
							DSP1.output[1] = (uint8_t) ((((int16_t) DSP1.Op10CoefficientR) >> 8) & 0xFF);
							DSP1.output[2] = (uint8_t) ( ((int16_t) DSP1.Op10ExponentR   )       & 0xFF);
							DSP1.output[3] = (uint8_t) ((((int16_t) DSP1.Op10ExponentR   ) >> 8) & 0xFF);
							break;

						case 0x24:
						case 0x04: /* Sin and Cos of angle*/
							DSP1.Op04Angle  = (int16_t)  (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op04Radius = (uint16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));

							DSP1_Op04();

							DSP1.out_count = 4;
							DSP1.output[0] = (uint8_t)  (DSP1.Op04Sin       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op04Sin >> 8) & 0xFF);
							DSP1.output[2] = (uint8_t)  (DSP1.Op04Cos       & 0xFF);
							DSP1.output[3] = (uint8_t) ((DSP1.Op04Cos >> 8) & 0xFF);
							break;

						case 0x08: /* Radius*/
							DSP1.Op08X = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op08Y = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op08Z = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));

							DSP1_Op08();

							DSP1.out_count = 4;
							DSP1.output[0] = (uint8_t) ( ((int16_t) DSP1.Op08Ll)       & 0xFF);
							DSP1.output[1] = (uint8_t) ((((int16_t) DSP1.Op08Ll) >> 8) & 0xFF);
							DSP1.output[2] = (uint8_t) ( ((int16_t) DSP1.Op08Lh)       & 0xFF);
							DSP1.output[3] = (uint8_t) ((((int16_t) DSP1.Op08Lh) >> 8) & 0xFF);
							break;

						case 0x18: /* Range*/

							DSP1.Op18X = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op18Y = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op18Z = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));
							DSP1.Op18R = (int16_t) (DSP1.parameters[6] | (DSP1.parameters[7] << 8));

							DSP1_Op18();

							DSP1.out_count = 2;
							DSP1.output[0] = (uint8_t)  (DSP1.Op18D       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op18D >> 8) & 0xFF);
							break;

						case 0x38: /* Range*/

							DSP1.Op38X = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op38Y = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op38Z = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));
							DSP1.Op38R = (int16_t) (DSP1.parameters[6] | (DSP1.parameters[7] << 8));

							DSP1_Op38();

							DSP1.out_count = 2;
							DSP1.output[0] = (uint8_t)  (DSP1.Op38D       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op38D >> 8) & 0xFF);
							break;

						case 0x28: /* Distance (vector length)*/
							DSP1.Op28X = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op28Y = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op28Z = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));

							DSP1_Op28();

							DSP1.out_count = 2;
							DSP1.output[0] = (uint8_t)  (DSP1.Op28R       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op28R >> 8) & 0xFF);
							break;

						case 0x2c:
						case 0x0c: /* Rotate (2D rotate)*/
							DSP1.Op0CA  = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op0CX1 = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op0CY1 = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));

							DSP1_Op0C();

							DSP1.out_count = 4;
							DSP1.output[0] = (uint8_t)  (DSP1.Op0CX2       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op0CX2 >> 8) & 0xFF);
							DSP1.output[2] = (uint8_t)  (DSP1.Op0CY2       & 0xFF);
							DSP1.output[3] = (uint8_t) ((DSP1.Op0CY2 >> 8) & 0xFF);
							break;

						case 0x3c:
						case 0x1c: /* Polar (3D rotate)*/
							DSP1.Op1CZ   = (DSP1.parameters[ 0] | (DSP1.parameters[ 1] << 8));
							/*MK: reversed X and Y on neviksti and John's advice.*/
							DSP1.Op1CY   = (DSP1.parameters[ 2] | (DSP1.parameters[ 3] << 8));
							DSP1.Op1CX   = (DSP1.parameters[ 4] | (DSP1.parameters[ 5] << 8));
							DSP1.Op1CXBR = (DSP1.parameters[ 6] | (DSP1.parameters[ 7] << 8));
							DSP1.Op1CYBR = (DSP1.parameters[ 8] | (DSP1.parameters[ 9] << 8));
							DSP1.Op1CZBR = (DSP1.parameters[10] | (DSP1.parameters[11] << 8));

							DSP1_Op1C();

							DSP1.out_count = 6;
							DSP1.output[0] = (uint8_t)  (DSP1.Op1CXAR       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op1CXAR >> 8) & 0xFF);
							DSP1.output[2] = (uint8_t)  (DSP1.Op1CYAR       & 0xFF);
							DSP1.output[3] = (uint8_t) ((DSP1.Op1CYAR >> 8) & 0xFF);
							DSP1.output[4] = (uint8_t)  (DSP1.Op1CZAR       & 0xFF);
							DSP1.output[5] = (uint8_t) ((DSP1.Op1CZAR >> 8) & 0xFF);
							break;

						case 0x32:
						case 0x22:
						case 0x12:
						case 0x02: /* Parameter (Projection)*/
							DSP1.Op02FX  = (int16_t)  (DSP1.parameters[ 0] | (DSP1.parameters[ 1] << 8));
							DSP1.Op02FY  = (int16_t)  (DSP1.parameters[ 2] | (DSP1.parameters[ 3] << 8));
							DSP1.Op02FZ  = (int16_t)  (DSP1.parameters[ 4] | (DSP1.parameters[ 5] << 8));
							DSP1.Op02LFE = (int16_t)  (DSP1.parameters[ 6] | (DSP1.parameters[ 7] << 8));
							DSP1.Op02LES = (int16_t)  (DSP1.parameters[ 8] | (DSP1.parameters[ 9] << 8));
							DSP1.Op02AAS = (uint16_t) (DSP1.parameters[10] | (DSP1.parameters[11] << 8));
							DSP1.Op02AZS = (uint16_t) (DSP1.parameters[12] | (DSP1.parameters[13] << 8));

							DSP1_Op02();

							DSP1.out_count = 8;
							DSP1.output[0] = (uint8_t)  (DSP1.Op02VOF       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op02VOF >> 8) & 0xFF);
							DSP1.output[2] = (uint8_t)  (DSP1.Op02VVA       & 0xFF);
							DSP1.output[3] = (uint8_t) ((DSP1.Op02VVA >> 8) & 0xFF);
							DSP1.output[4] = (uint8_t)  (DSP1.Op02CX        & 0xFF);
							DSP1.output[5] = (uint8_t) ((DSP1.Op02CX  >> 8) & 0xFF);
							DSP1.output[6] = (uint8_t)  (DSP1.Op02CY        & 0xFF);
							DSP1.output[7] = (uint8_t) ((DSP1.Op02CY  >> 8) & 0xFF);
							break;

						case 0x3a:
						case 0x2a:
						case 0x1a: /* Raster mode 7 matrix data*/
						case 0x0a:
							DSP1.Op0AVS = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));

							DSP1_Op0A();

							DSP1.out_count = 8;
							DSP1.output[0] = (uint8_t)  (DSP1.Op0AA       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op0AA >> 8) & 0xFF);
							DSP1.output[2] = (uint8_t)  (DSP1.Op0AB       & 0xFF);
							DSP1.output[3] = (uint8_t) ((DSP1.Op0AB >> 8) & 0xFF);
							DSP1.output[4] = (uint8_t)  (DSP1.Op0AC       & 0xFF);
							DSP1.output[5] = (uint8_t) ((DSP1.Op0AC >> 8) & 0xFF);
							DSP1.output[6] = (uint8_t)  (DSP1.Op0AD       & 0xFF);
							DSP1.output[7] = (uint8_t) ((DSP1.Op0AD >> 8) & 0xFF);
							DSP1.in_index  = 0;
							break;

						case 0x16:
						case 0x26:
						case 0x36:
						case 0x06: /* Project object*/
							DSP1.Op06X = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op06Y = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op06Z = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));

							DSP1_Op06();

							DSP1.out_count = 6;
							DSP1.output[0] = (uint8_t)  (DSP1.Op06H       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op06H >> 8) & 0xFF);
							DSP1.output[2] = (uint8_t)  (DSP1.Op06V       & 0xFF);
							DSP1.output[3] = (uint8_t) ((DSP1.Op06V >> 8) & 0xFF);
							DSP1.output[4] = (uint8_t)  (DSP1.Op06M       & 0xFF);
							DSP1.output[5] = (uint8_t) ((DSP1.Op06M >> 8) & 0xFF);
							break;

						case 0x1e:
						case 0x2e:
						case 0x3e:
						case 0x0e: /* Target*/
							DSP1.Op0EH = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op0EV = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));

							DSP1_Op0E();

							DSP1.out_count = 4;
							DSP1.output[0] = (uint8_t)  (DSP1.Op0EX       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op0EX >> 8) & 0xFF);
							DSP1.output[2] = (uint8_t)  (DSP1.Op0EY       & 0xFF);
							DSP1.output[3] = (uint8_t) ((DSP1.Op0EY >> 8) & 0xFF);
							break;

							/* Extra commands used by Pilot Wings*/
						case 0x05:
						case 0x35:
						case 0x31:
						case 0x01: /* Set attitude matrix A*/
							DSP1.Op01m  = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op01Zr = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op01Yr = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));
							DSP1.Op01Xr = (int16_t) (DSP1.parameters[6] | (DSP1.parameters[7] << 8));

							DSP1_Op01();
							break;

						case 0x15:
						case 0x11: /* Set attitude matrix B*/
							DSP1.Op11m  = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op11Zr = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op11Yr = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));
							DSP1.Op11Xr = (int16_t) (DSP1.parameters[6] | (DSP1.parameters[7] << 8));

							DSP1_Op11();
							break;

						case 0x25:
						case 0x21: /* Set attitude matrix C*/
							DSP1.Op21m  = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op21Zr = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op21Yr = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));
							DSP1.Op21Xr = (int16_t) (DSP1.parameters[6] | (DSP1.parameters[7] << 8));

							DSP1_Op21();
							break;

						case 0x09:
						case 0x39:
						case 0x3d:
						case 0x0d: /* Objective matrix A*/
							DSP1.Op0DX = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op0DY = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op0DZ = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));

							DSP1_Op0D();

							DSP1.out_count = 6;
							DSP1.output [0] = (uint8_t)  (DSP1.Op0DF       & 0xFF);
							DSP1.output [1] = (uint8_t) ((DSP1.Op0DF >> 8) & 0xFF);
							DSP1.output [2] = (uint8_t)  (DSP1.Op0DL       & 0xFF);
							DSP1.output [3] = (uint8_t) ((DSP1.Op0DL >> 8) & 0xFF);
							DSP1.output [4] = (uint8_t)  (DSP1.Op0DU       & 0xFF);
							DSP1.output [5] = (uint8_t) ((DSP1.Op0DU >> 8) & 0xFF);
							break;

						case 0x19:
						case 0x1d: /* Objective matrix B*/
							DSP1.Op1DX = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op1DY = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op1DZ = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));

							DSP1_Op1D();

							DSP1.out_count = 6;
							DSP1.output[0] = (uint8_t)  (DSP1.Op1DF       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op1DF >> 8) & 0xFF);
							DSP1.output[2] = (uint8_t)  (DSP1.Op1DL       & 0xFF);
							DSP1.output[3] = (uint8_t) ((DSP1.Op1DL >> 8) & 0xFF);
							DSP1.output[4] = (uint8_t)  (DSP1.Op1DU       & 0xFF);
							DSP1.output[5] = (uint8_t) ((DSP1.Op1DU >> 8) & 0xFF);
							break;

						case 0x29:
						case 0x2d: /* Objective matrix C*/
							DSP1.Op2DX = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op2DY = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op2DZ = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));

							DSP1_Op2D();

							DSP1.out_count = 6;
							DSP1.output[0] = (uint8_t)  (DSP1.Op2DF       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op2DF >> 8) & 0xFF);
							DSP1.output[2] = (uint8_t)  (DSP1.Op2DL       & 0xFF);
							DSP1.output[3] = (uint8_t) ((DSP1.Op2DL >> 8) & 0xFF);
							DSP1.output[4] = (uint8_t)  (DSP1.Op2DU       & 0xFF);
							DSP1.output[5] = (uint8_t) ((DSP1.Op2DU >> 8) & 0xFF);
							break;

						case 0x33:
						case 0x03: /* Subjective matrix A*/
							DSP1.Op03F = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op03L = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op03U = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));

							DSP1_Op03();

							DSP1.out_count = 6;
							DSP1.output[0] = (uint8_t)  (DSP1.Op03X       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op03X >> 8) & 0xFF);
							DSP1.output[2] = (uint8_t)  (DSP1.Op03Y       & 0xFF);
							DSP1.output[3] = (uint8_t) ((DSP1.Op03Y >> 8) & 0xFF);
							DSP1.output[4] = (uint8_t)  (DSP1.Op03Z       & 0xFF);
							DSP1.output[5] = (uint8_t) ((DSP1.Op03Z >> 8) & 0xFF);
							break;

						case 0x13: /* Subjective matrix B*/
							DSP1.Op13F = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op13L = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op13U = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));

							DSP1_Op13();

							DSP1.out_count = 6;
							DSP1.output[0] = (uint8_t)  (DSP1.Op13X       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op13X >> 8) & 0xFF);
							DSP1.output[2] = (uint8_t)  (DSP1.Op13Y       & 0xFF);
							DSP1.output[3] = (uint8_t) ((DSP1.Op13Y >> 8) & 0xFF);
							DSP1.output[4] = (uint8_t)  (DSP1.Op13Z       & 0xFF);
							DSP1.output[5] = (uint8_t) ((DSP1.Op13Z >> 8) & 0xFF);
							break;

						case 0x23: /* Subjective matrix C*/
							DSP1.Op23F = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op23L = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op23U = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));

							DSP1_Op23();

							DSP1.out_count = 6;
							DSP1.output[0] = (uint8_t)  (DSP1.Op23X       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op23X >> 8) & 0xFF);
							DSP1.output[2] = (uint8_t)  (DSP1.Op23Y       & 0xFF);
							DSP1.output[3] = (uint8_t) ((DSP1.Op23Y >> 8) & 0xFF);
							DSP1.output[4] = (uint8_t)  (DSP1.Op23Z       & 0xFF);
							DSP1.output[5] = (uint8_t) ((DSP1.Op23Z >> 8) & 0xFF);
							break;

						case 0x3b:
						case 0x0b:
							DSP1.Op0BX = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op0BY = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op0BZ = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));

							DSP1_Op0B();

							DSP1.out_count = 2;
							DSP1.output[0] = (uint8_t)  (DSP1.Op0BS       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op0BS >> 8) & 0xFF);
							break;

						case 0x1b:
							DSP1.Op1BX = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op1BY = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op1BZ = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));

							DSP1_Op1B();

							DSP1.out_count = 2;
							DSP1.output[0] = (uint8_t)  (DSP1.Op1BS       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op1BS >> 8) & 0xFF);
							break;

						case 0x2b:
							DSP1.Op2BX = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));
							DSP1.Op2BY = (int16_t) (DSP1.parameters[2] | (DSP1.parameters[3] << 8));
							DSP1.Op2BZ = (int16_t) (DSP1.parameters[4] | (DSP1.parameters[5] << 8));

							DSP1_Op2B();

							DSP1.out_count = 2;
							DSP1.output[0] = (uint8_t)  (DSP1.Op2BS       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op2BS >> 8) & 0xFF);
							break;

						case 0x34:
						case 0x14:
							DSP1.Op14Zr = (int16_t) (DSP1.parameters[ 0] | (DSP1.parameters[ 1] << 8));
							DSP1.Op14Xr = (int16_t) (DSP1.parameters[ 2] | (DSP1.parameters[ 3] << 8));
							DSP1.Op14Yr = (int16_t) (DSP1.parameters[ 4] | (DSP1.parameters[ 5] << 8));
							DSP1.Op14U  = (int16_t) (DSP1.parameters[ 6] | (DSP1.parameters[ 7] << 8));
							DSP1.Op14F  = (int16_t) (DSP1.parameters[ 8] | (DSP1.parameters[ 9] << 8));
							DSP1.Op14L  = (int16_t) (DSP1.parameters[10] | (DSP1.parameters[11] << 8));

							DSP1_Op14();

							DSP1.out_count = 6;
							DSP1.output[0] = (uint8_t)  (DSP1.Op14Zrr       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op14Zrr >> 8) & 0xFF);
							DSP1.output[2] = (uint8_t)  (DSP1.Op14Xrr       & 0xFF);
							DSP1.output[3] = (uint8_t) ((DSP1.Op14Xrr >> 8) & 0xFF);
							DSP1.output[4] = (uint8_t)  (DSP1.Op14Yrr       & 0xFF);
							DSP1.output[5] = (uint8_t) ((DSP1.Op14Yrr >> 8) & 0xFF);
							break;

						case 0x27:
						case 0x2F:
							DSP1.Op2FUnknown = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));

							DSP1_Op2F();

							DSP1.out_count = 2;
							DSP1.output[0] = (uint8_t)  (DSP1.Op2FSize       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op2FSize >> 8) & 0xFF);
							break;


						case 0x07:
						case 0x0F:
							DSP1.Op0FRamsize = (int16_t) (DSP1.parameters[0] | (DSP1.parameters[1] << 8));

							DSP1_Op0F();

							DSP1.out_count = 2;
							DSP1.output[0] = (uint8_t)  (DSP1.Op0FPass       & 0xFF);
							DSP1.output[1] = (uint8_t) ((DSP1.Op0FPass >> 8) & 0xFF);
							break;

						default:
							break;
					}
				}
			}
		}
	}
}

uint8_t DSP1GetByte (uint16_t address)
{
	uint8_t	t;

	if (address < DSP0.boundary)
	{
		if (DSP1.out_count)
		{
			t = (uint8_t) DSP1.output[DSP1.out_index];

			DSP1.out_index++;

			if (--DSP1.out_count == 0)
			{
				if (DSP1.command == 0x1a || DSP1.command == 0x0a)
				{
					DSP1_Op0A();
					DSP1.out_count = 8;
					DSP1.out_index = 0;
					DSP1.output[0] =  DSP1.Op0AA       & 0xFF;
					DSP1.output[1] = (DSP1.Op0AA >> 8) & 0xFF;
					DSP1.output[2] =  DSP1.Op0AB       & 0xFF;
					DSP1.output[3] = (DSP1.Op0AB >> 8) & 0xFF;
					DSP1.output[4] =  DSP1.Op0AC       & 0xFF;
					DSP1.output[5] = (DSP1.Op0AC >> 8) & 0xFF;
					DSP1.output[6] =  DSP1.Op0AD       & 0xFF;
					DSP1.output[7] = (DSP1.Op0AD >> 8) & 0xFF;
				}

				if (DSP1.command == 0x1f)
				{
					if ((DSP1.out_index % 2) != 0)
						t = (uint8_t) DSP1ROM[DSP1.out_index >> 1];
					else
						t = DSP1ROM[DSP1.out_index >> 1] >> 8;
				}
			}

			DSP1.waiting4command = TRUE;
		}
		else
			/* Reads past the end of the output stream return 0x80, not
			 * 0xff (mainline snes9x 1c46c7ac). */
			t = 0x80;
	}
	else
		t = 0x80;

	return (t);
}

/***********************************************************************************
 DSP2
***********************************************************************************/

/* convert bitmap to bitplane tile*/
static void DSP2_Op01 (void)
{
	/* Op01 size is always 32 bytes input and output*/
	/* The hardware does strange things if you vary the size*/
	int j;
	uint8_t	c0, c1, c2, c3;
	uint8_t *p1, *p2a;

	p1  = DSP2.parameters;
	p2a = DSP2.output;

	/* Process 8 blocks of 4 bytes each*/

	for ( j = 0; j < 8; j++)
	{
		c0 = *p1++;
		c1 = *p1++;
		c2 = *p1++;
		c3 = *p1++;

		*p2a++ = (c0 & 0x10) << 3 |
				 (c0 & 0x01) << 6 |
				 (c1 & 0x10) << 1 |
				 (c1 & 0x01) << 4 |
				 (c2 & 0x10) >> 1 |
				 (c2 & 0x01) << 2 |
				 (c3 & 0x10) >> 3 |
				 (c3 & 0x01);

		*p2a++ = (c0 & 0x20) << 2 |
				 (c0 & 0x02) << 5 |
				 (c1 & 0x20)      |
				 (c1 & 0x02) << 3 |
				 (c2 & 0x20) >> 2 |
				 (c2 & 0x02) << 1 |
				 (c3 & 0x20) >> 4 |
				 (c3 & 0x02) >> 1;
	}
	/* The DSP-2 only bit-plane-converts into the low 16 output bytes; the high 16
	 * are a fixed pad the coprocessor always returns (verified bit-identical to the
	 * uPD7725 LLE firmware / ares for every input, and game-level bit-identical for
	 * Dungeon Master). Emit that pad rather than a second computed plane. */
	{
		int k;
		for (k = 16; k < 32; k++)
			DSP2.output[k] = (k & 1) ? 0x00 : 0xFF;
	}
}

/* set transparent color*/
static void DSP2_Op03 (void)
{
	DSP2.Op05Transparent = DSP2.parameters[0];
}

/* replace bitmap using transparent color*/
static void DSP2_Op05 (void)
{
	int32_t n;
	/* Overlay bitmap with transparency.
	/ Input:
	//
	//   Bitmap 1:  i[0] <=> i[size-1]
	//   Bitmap 2:  i[size] <=> i[2*size-1]
	//
	// Output:
	//
	//   Bitmap 3:  o[0] <=> o[size-1]
	//
	// Processing:
	//
	//   Process all 4-bit pixels (nibbles) in the bitmap
	//
	//   if ( BM2_pixel == transparent_color )
	//      pixelout = BM1_pixel
	//   else
	//      pixelout = BM2_pixel

	// The max size bitmap is limited to 255 because the size parameter is a byte
	// I think size=0 is an error.  The behavior of the chip on size=0 is to
	// return the last value written to DR if you read DR on Op05 with
	// size = 0.  I don't think it's worth implementing this quirk unless it's
	// proven necessary. */

	uint8_t	color;
	uint8_t	c1, c2;
	uint8_t *p1, *p2, *p3;

	p1 = DSP2.parameters;
	p2 = DSP2.parameters + DSP2.Op05Len;
	p3 = DSP2.output;

	color = DSP2.Op05Transparent & 0x0f;

	for ( n = 0; n < DSP2.Op05Len; n++)
	{
		c1 = *p1++;
		c2 = *p2++;
		*p3++ = (((c2 >> 4) == color) ? c1 & 0xf0: c2 & 0xf0) | (((c2 & 0x0f) == color) ? c1 & 0x0f: c2 & 0x0f);
	}
}

/* reverse bitmap*/
static void DSP2_Op06 (void)
{
	int32_t i, j;
	/* Input:
	//    size
	//    bitmap */

	for ( i = 0, j = DSP2.Op06Len - 1; i < DSP2.Op06Len; i++, j--)
		DSP2.output[j] = (DSP2.parameters[i] << 4) | (DSP2.parameters[i] >> 4);
}

/* multiply*/
static void DSP2_Op09 (void)
{
	uint32_t temp;
	DSP2.Op09Word1 = DSP2.parameters[0] | (DSP2.parameters[1] << 8);
	DSP2.Op09Word2 = DSP2.parameters[2] | (DSP2.parameters[3] << 8);

	temp = DSP2.Op09Word1 * DSP2.Op09Word2;
	DSP2.output[0] =  temp        & 0xFF;
	DSP2.output[1] = (temp >>  8) & 0xFF;
	DSP2.output[2] = (temp >> 16) & 0xFF;
	DSP2.output[3] = (temp >> 24) & 0xFF;
}

/* scale bitmap*/
static void DSP2_Op0D (void)
{
	int32_t i;
	/* Bit accurate hardware algorithm - uses fixed point math
	// This should match the DSP2 Op0D output exactly
	// I wouldn't recommend using this unless you're doing hardware debug.
	// In some situations it has small visual artifacts that
	// are not readily apparent on a TV screen but show up clearly
	// on a monitor.  Use Overload's scaling instead.
	// This is for hardware verification testing.
	//
	// One note:  the HW can do odd byte scaling but since we divide
	// by two to get the count of bytes this won't work well for
	// odd byte scaling (in any of the current algorithm implementations).
	// So far I haven't seen Dungeon Master use it.
	// If it does we can adjust the parameters and code to work with it */

	uint32_t	multiplier; /* Any size int >= 32-bits*/
	uint32_t	pixloc;	    /* match size of multiplier*/
	uint8_t	pixelarray[512];

	if (DSP2.Op0DInLen <= DSP2.Op0DOutLen)
		multiplier = 0x10000; /* In our self defined fixed point 0x10000 == 1*/
	else
		multiplier = (DSP2.Op0DInLen << 17) / ((DSP2.Op0DOutLen << 1) + 1);

	pixloc = 0;

	for ( i = 0; i < DSP2.Op0DOutLen * 2; i++)
	{
		int32_t	j = pixloc >> 16;

		if (j & 1)
			pixelarray[i] =  DSP2.parameters[j >> 1] & 0x0f;
		else
			pixelarray[i] = (DSP2.parameters[j >> 1] & 0xf0) >> 4;

		pixloc += multiplier;
	}

	for ( i = 0; i < DSP2.Op0DOutLen; i++)
		DSP2.output[i] = (pixelarray[i << 1] << 4) | pixelarray[(i << 1) + 1];
}

/*
static void DSP2_Op0D (void)
{
	// Overload's algorithm - use this unless doing hardware testing

	// One note:  the HW can do odd byte scaling but since we divide
	// by two to get the count of bytes this won't work well for
	// odd byte scaling (in any of the current algorithm implementations).
	// So far I haven't seen Dungeon Master use it.
	// If it does we can adjust the parameters and code to work with it

	int32_t	pixel_offset;
	uint8_t	pixelarray[512];

	for (int32_t i = 0; i < DSP2.Op0DOutLen * 2; i++)
	{
		pixel_offset = (i * DSP2.Op0DInLen) / DSP2.Op0DOutLen;

		if ((pixel_offset & 1) == 0)
			pixelarray[i] = DSP2.parameters[pixel_offset >> 1] >> 4;
		else
			pixelarray[i] = DSP2.parameters[pixel_offset >> 1] & 0x0f;
	}

	for (int32_t i = 0; i < DSP2.Op0DOutLen; i++)
		DSP2.output[i] = (pixelarray[i << 1] << 4) | pixelarray[(i << 1) + 1];
}
*/

void DSP2SetByte (uint8_t byte, uint16_t address)
{
	if ((address & 0xf000) == 0x6000 || (address >= 0x8000 && address < 0xc000))
	{
		if (DSP2.waiting4command)
		{
			DSP2.command         = byte;
			DSP2.in_index        = 0;
			DSP2.waiting4command = FALSE;

			switch (byte)
			{
				case 0x01: DSP2.in_count = 32; break;
				case 0x03: DSP2.in_count =  1; break;
				case 0x05: DSP2.in_count =  1; break;
				case 0x06: DSP2.in_count =  1; break;
				case 0x09: DSP2.in_count =  4; break;
				case 0x0D: DSP2.in_count =  2; break;
				default:
				case 0x0f: DSP2.in_count =  0; break;
			}
		}
		else
		{
			DSP2.parameters[DSP2.in_index] = byte;
			DSP2.in_index++;
		}

		if (DSP2.in_count == DSP2.in_index)
		{
			DSP2.waiting4command = TRUE;
			DSP2.out_index       = 0;

			switch (DSP2.command)
			{
				case 0x01:
					DSP2.out_count = 32;
					DSP2_Op01();
					break;

				case 0x03:
					DSP2_Op03();
					break;

				case 0x05:
					if (DSP2.Op05HasLen)
					{
						DSP2.Op05HasLen = FALSE;
						DSP2.out_count  = DSP2.Op05Len;
						DSP2_Op05();
					}
					else
					{
						DSP2.Op05Len    = DSP2.parameters[0];
						DSP2.in_index   = 0;
						DSP2.in_count   = 2 * DSP2.Op05Len;
						DSP2.Op05HasLen = TRUE;
						if (byte)
							DSP2.waiting4command = FALSE;
					}

					break;

				case 0x06:
					if (DSP2.Op06HasLen)
					{
						DSP2.Op06HasLen = FALSE;
						DSP2.out_count  = DSP2.Op06Len;
						DSP2_Op06();
					}
					else
					{
						DSP2.Op06Len    = DSP2.parameters[0];
						DSP2.in_index   = 0;
						DSP2.in_count   = DSP2.Op06Len;
						DSP2.Op06HasLen = TRUE;
						if (byte)
							DSP2.waiting4command = FALSE;
					}

					break;

				case 0x09:
					DSP2.out_count = 4;
					DSP2_Op09();
					break;

				case 0x0D:
					if (DSP2.Op0DHasLen)
					{
						DSP2.Op0DHasLen = FALSE;
						DSP2.out_count  = DSP2.Op0DOutLen;
						DSP2_Op0D();
					}
					else
					{
						DSP2.Op0DInLen  = DSP2.parameters[0];
						DSP2.Op0DOutLen = DSP2.parameters[1];
						DSP2.in_index   = 0;
						DSP2.in_count   = (DSP2.Op0DInLen + 1) >> 1;
						DSP2.Op0DHasLen = TRUE;
						if (byte)
							DSP2.waiting4command = FALSE;
					}

					break;

				case 0x0f:
				default:
					break;
			}
		}
	}
}

uint8_t DSP2GetByte (uint16_t address)
{
	uint8_t	t;

	if ((address & 0xf000) == 0x6000 || (address >= 0x8000 && address < 0xc000))
	{
		if (DSP2.out_count)
		{
			t = (uint8_t) DSP2.output[DSP2.out_index];
			DSP2.out_index++;
			if (DSP2.out_count == DSP2.out_index)
				DSP2.out_count = 0;
		}
		else
			t = 0xff;
	}
	else
		t = 0x80;

	return (t);
}

/***********************************************************************************
 DSP3
***********************************************************************************/

static void (*SetDSP3) (void);

static const uint16_t	DSP3_DataROM[1024] =
{
	0x8000, 0x4000, 0x2000, 0x1000, 0x0800, 0x0400, 0x0200, 0x0100,
	0x0080, 0x0040, 0x0020, 0x0010, 0x0008, 0x0004, 0x0002, 0x0001,
	0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080, 0x0100,
	0x0000, 0x000f, 0x0400, 0x0200, 0x0140, 0x0400, 0x0200, 0x0040,
	0x007d, 0x007e, 0x007e, 0x007b, 0x007c, 0x007d, 0x007b, 0x007c,
	0x0002, 0x0020, 0x0030, 0x0000, 0x000d, 0x0019, 0x0026, 0x0032,
	0x003e, 0x004a, 0x0056, 0x0062, 0x006d, 0x0079, 0x0084, 0x008e,
	0x0098, 0x00a2, 0x00ac, 0x00b5, 0x00be, 0x00c6, 0x00ce, 0x00d5,
	0x00dc, 0x00e2, 0x00e7, 0x00ec, 0x00f1, 0x00f5, 0x00f8, 0x00fb,
	0x00fd, 0x00ff, 0x0100, 0x0100, 0x0100, 0x00ff, 0x00fd, 0x00fb,
	0x00f8, 0x00f5, 0x00f1, 0x00ed, 0x00e7, 0x00e2, 0x00dc, 0x00d5,
	0x00ce, 0x00c6, 0x00be, 0x00b5, 0x00ac, 0x00a2, 0x0099, 0x008e,
	0x0084, 0x0079, 0x006e, 0x0062, 0x0056, 0x004a, 0x003e, 0x0032,
	0x0026, 0x0019, 0x000d, 0x0000, 0xfff3, 0xffe7, 0xffdb, 0xffce,
	0xffc2, 0xffb6, 0xffaa, 0xff9e, 0xff93, 0xff87, 0xff7d, 0xff72,
	0xff68, 0xff5e, 0xff54, 0xff4b, 0xff42, 0xff3a, 0xff32, 0xff2b,
	0xff25, 0xff1e, 0xff19, 0xff14, 0xff0f, 0xff0b, 0xff08, 0xff05,
	0xff03, 0xff01, 0xff00, 0xff00, 0xff00, 0xff01, 0xff03, 0xff05,
	0xff08, 0xff0b, 0xff0f, 0xff13, 0xff18, 0xff1e, 0xff24, 0xff2b,
	0xff32, 0xff3a, 0xff42, 0xff4b, 0xff54, 0xff5d, 0xff67, 0xff72,
	0xff7c, 0xff87, 0xff92, 0xff9e, 0xffa9, 0xffb5, 0xffc2, 0xffce,
	0xffda, 0xffe7, 0xfff3, 0x002b, 0x007f, 0x0020, 0x00ff, 0xff00,
	0xffbe, 0x0000, 0x0044, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0xffc1, 0x0001, 0x0002, 0x0045,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0xffc5, 0x0003, 0x0004, 0x0005, 0x0047, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0xffca, 0x0006, 0x0007, 0x0008,
	0x0009, 0x004a, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0xffd0, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x004e, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0xffd7, 0x000f, 0x0010, 0x0011,
	0x0012, 0x0013, 0x0014, 0x0053, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0xffdf, 0x0015, 0x0016, 0x0017, 0x0018, 0x0019, 0x001a, 0x001b,
	0x0059, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0xffe8, 0x001c, 0x001d, 0x001e,
	0x001f, 0x0020, 0x0021, 0x0022, 0x0023, 0x0060, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0xfff2, 0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a,
	0x002b, 0x002c, 0x0068, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0xfffd, 0x002d, 0x002e, 0x002f,
	0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0071,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0xffc7, 0x0037, 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d,
	0x003e, 0x003f, 0x0040, 0x0041, 0x007b, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0xffd4, 0x0000, 0x0001, 0x0002,
	0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, 0x000a,
	0x000b, 0x0044, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0xffe2, 0x000c, 0x000d, 0x000e, 0x000f, 0x0010, 0x0011, 0x0012,
	0x0013, 0x0014, 0x0015, 0x0016, 0x0017, 0x0018, 0x0050, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0xfff1, 0x0019, 0x001a, 0x001b,
	0x001c, 0x001d, 0x001e, 0x001f, 0x0020, 0x0021, 0x0022, 0x0023,
	0x0024, 0x0025, 0x0026, 0x005d, 0x0000, 0x0000, 0x0000, 0x0000,
	0xffcb, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d,
	0x002e, 0x002f, 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035,
	0x006b, 0x0000, 0x0000, 0x0000, 0xffdc, 0x0000, 0x0001, 0x0002,
	0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, 0x000a,
	0x000b, 0x000c, 0x000d, 0x000e, 0x000f, 0x0044, 0x0000, 0x0000,
	0xffee, 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016,
	0x0017, 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e,
	0x001f, 0x0020, 0x0054, 0x0000, 0xffee, 0x0021, 0x0022, 0x0023,
	0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b,
	0x002c, 0x002d, 0x002e, 0x002f, 0x0030, 0x0031, 0x0032, 0x0065,
	0xffbe, 0x0000, 0xfeac, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0xffc1, 0x0001, 0x0002, 0xfead,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0xffc5, 0x0003, 0x0004, 0x0005, 0xfeaf, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0xffca, 0x0006, 0x0007, 0x0008,
	0x0009, 0xfeb2, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0xffd0, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0xfeb6, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0xffd7, 0x000f, 0x0010, 0x0011,
	0x0012, 0x0013, 0x0014, 0xfebb, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0xffdf, 0x0015, 0x0016, 0x0017, 0x0018, 0x0019, 0x001a, 0x001b,
	0xfec1, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0xffe8, 0x001c, 0x001d, 0x001e,
	0x001f, 0x0020, 0x0021, 0x0022, 0x0023, 0xfec8, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0xfff2, 0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a,
	0x002b, 0x002c, 0xfed0, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0xfffd, 0x002d, 0x002e, 0x002f,
	0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0xfed9,
	0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0xffc7, 0x0037, 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d,
	0x003e, 0x003f, 0x0040, 0x0041, 0xfee3, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0xffd4, 0x0000, 0x0001, 0x0002,
	0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, 0x000a,
	0x000b, 0xfeac, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
	0xffe2, 0x000c, 0x000d, 0x000e, 0x000f, 0x0010, 0x0011, 0x0012,
	0x0013, 0x0014, 0x0015, 0x0016, 0x0017, 0x0018, 0xfeb8, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000, 0xfff1, 0x0019, 0x001a, 0x001b,
	0x001c, 0x001d, 0x001e, 0x001f, 0x0020, 0x0021, 0x0022, 0x0023,
	0x0024, 0x0025, 0x0026, 0xfec5, 0x0000, 0x0000, 0x0000, 0x0000,
	0xffcb, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d,
	0x002e, 0x002f, 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035,
	0xfed3, 0x0000, 0x0000, 0x0000, 0xffdc, 0x0000, 0x0001, 0x0002,
	0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, 0x000a,
	0x000b, 0x000c, 0x000d, 0x000e, 0x000f, 0xfeac, 0x0000, 0x0000,
	0xffee, 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016,
	0x0017, 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e,
	0x001f, 0x0020, 0xfebc, 0x0000, 0xffee, 0x0021, 0x0022, 0x0023,
	0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b,
	0x002c, 0x002d, 0x002e, 0x002f, 0x0030, 0x0031, 0x0032, 0xfecd,
	0x0154, 0x0218, 0x0110, 0x00b0, 0x00cc, 0x00b0, 0x0088, 0x00b0,
	0x0044, 0x00b0, 0x0000, 0x00b0, 0x00fe, 0xff07, 0x0002, 0x00ff,
	0x00f8, 0x0007, 0x00fe, 0x00ee, 0x07ff, 0x0200, 0x00ef, 0xf800,
	0x0700, 0x00ee, 0xffff, 0xffff, 0xffff, 0x0000, 0x0000, 0x0001,
	0x0001, 0x0001, 0x0001, 0x0000, 0x0000, 0xffff, 0xffff, 0xffff,
	0xffff, 0x0000, 0x0000, 0x0001, 0x0001, 0x0001, 0x0001, 0x0000,
	0x0000, 0xffff, 0xffff, 0x0000, 0xffff, 0x0001, 0x0000, 0x0001,
	0x0001, 0x0000, 0x0000, 0xffff, 0xffff, 0xffff, 0xffff, 0x0000,
	0xffff, 0x0001, 0x0000, 0x0001, 0x0001, 0x0000, 0x0000, 0xffff,
	0xffff, 0xffff, 0x0000, 0x0000, 0x0000, 0x0044, 0x0088, 0x00cc,
	0x0110, 0x0154, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
	0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
	0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
	0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
	0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
	0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff
};

static void DSP3_Command (void);
static void DSP3_Decode_Data (void);
static void DSP3_Decode_Tree (void);
static void DSP3_Decode_Symbols (void);
static void DSP3_Decode (void);
static void DSP3_Decode_A (void);
static void DSP3_Convert (void);
static void DSP3_Convert_A (void);
static void DSP3_OP03 (void);
static void DSP3_OP06 (void);
static void DSP3_OP07 (void);
static void DSP3_OP07_A (void);
static void DSP3_OP07_B (void);
static void DSP3_OP0C (void);
/* static void DSP3_OP0C_A (void); */
static void DSP3_OP10 (void);
static void DSP3_OP1C (void);
static void DSP3_OP1C_A (void);
static void DSP3_OP1C_B (void);
static void DSP3_OP1C_C (void);
static void DSP3_OP1E (void);
static void DSP3_OP1E_A (void);
static void DSP3_OP1E_A1 (void);
static void DSP3_OP1E_A2 (void);
static void DSP3_OP1E_A3 (void);
static void DSP3_OP1E_B (void);
static void DSP3_OP1E_B1 (void);
static void DSP3_OP1E_B2 (void);
static void DSP3_OP1E_C (void);
static void DSP3_OP1E_C1 (void);
static void DSP3_OP1E_C2 (void);
static void DSP3_OP1E_D (int16_t, int16_t *, int16_t *);
static void DSP3_OP1E_D1 (int16_t, int16_t *, int16_t *);
static void DSP3_OP3E (void);


void DSP3_Reset (void)
{
	DSP3.DR = 0x0080;
	DSP3.SR = 0x0084;
	SetDSP3 = &DSP3_Command;
}

static void DSP3_TestMemory (void)
{
	DSP3.DR = 0x0000;
	SetDSP3 = &DSP3_Reset;
}

static void DSP3_DumpDataROM (void)
{
	DSP3.DR = DSP3_DataROM[DSP3.MemoryIndex++];
	if (DSP3.MemoryIndex == 1024)
		SetDSP3 = &DSP3_Reset;
}

static void DSP3_MemoryDump (void)
{
	DSP3.MemoryIndex = 0;
	SetDSP3 = &DSP3_DumpDataROM;
	DSP3_DumpDataROM();
}

static void DSP3_OP06 (void)
{
	DSP3.WinLo = (uint8_t) (DSP3.DR);
	DSP3.WinHi = (uint8_t) (DSP3.DR >> 8);
	DSP3_Reset();
}

static void DSP3_OP03 (void)
{
	int16_t Lo, Hi, Ofs;

	Lo  = (uint8_t) (DSP3.DR);
	Hi  = (uint8_t) (DSP3.DR >> 8);
	Ofs = (DSP3.WinLo * Hi << 1) + (Lo << 1);

	DSP3.DR = Ofs >> 1;
	SetDSP3 = &DSP3_Reset;
}

static void DSP3_OP07_B (void)
{
	int16_t Ofs;

	Ofs = (DSP3.WinLo * DSP3.AddHi << 1) + (DSP3.AddLo << 1);

	DSP3.DR = Ofs >> 1;
	SetDSP3 = &DSP3_Reset;
}

static void DSP3_OP07_A (void)
{
	int16_t Lo, Hi;

	Lo = (uint8_t) (DSP3.DR);
	Hi = (uint8_t) (DSP3.DR >> 8);

	if (Lo & 1)
		Hi += (DSP3.AddLo & 1);

	DSP3.AddLo += Lo;
	DSP3.AddHi += Hi;

	if (DSP3.AddLo < 0)
		DSP3.AddLo += DSP3.WinLo;
	else
	if (DSP3.AddLo >= DSP3.WinLo)
		DSP3.AddLo -= DSP3.WinLo;

	if (DSP3.AddHi < 0)
		DSP3.AddHi += DSP3.WinHi;
	else
	if (DSP3.AddHi >= DSP3.WinHi)
		DSP3.AddHi -= DSP3.WinHi;

	DSP3.DR = DSP3.AddLo | (DSP3.AddHi << 8) | ((DSP3.AddHi >> 8) & 0xff);
	SetDSP3 = &DSP3_OP07_B;
}

static void DSP3_OP07 (void)
{
	uint32_t dataOfs;

	dataOfs = ((DSP3.DR << 1) + 0x03b2) & 0x03ff;

	DSP3.AddHi = DSP3_DataROM[dataOfs];
	DSP3.AddLo = DSP3_DataROM[dataOfs + 1];

	SetDSP3 = &DSP3_OP07_A;
	DSP3.SR = 0x0080;
}

static void DSP3_Coordinate (void)
{
	DSP3.Index++;

	switch (DSP3.Index)
	{
		case 3:
			if (DSP3.DR == 0xffff)
				DSP3_Reset();
			break;

		case 4:
			DSP3.X = DSP3.DR;
			break;

		case 5:
			DSP3.Y = DSP3.DR;
			DSP3.DR = 1;
			break;

		case 6:
			DSP3.DR = DSP3.X;
			break;

		case 7:
			DSP3.DR = DSP3.Y;
			DSP3.Index = 0;
			break;
	}
}

static void DSP3_Convert_A (void)
{
	int i, j;
	if (DSP3.BMIndex < 8)
	{
		DSP3.Bitmap[DSP3.BMIndex++] = (uint8_t) (DSP3.DR);
		DSP3.Bitmap[DSP3.BMIndex++] = (uint8_t) (DSP3.DR >> 8);

		if (DSP3.BMIndex == 8)
		{
			for ( i = 0; i < 8; i++)
			{
				for ( j = 0; j < 8; j++)
				{
					DSP3.Bitplane[j] <<= 1;
					DSP3.Bitplane[j] |= (DSP3.Bitmap[i] >> j) & 1;
				}
			}

			DSP3.BPIndex = 0;
			DSP3.Count--;
		}
	}

	if (DSP3.BMIndex == 8)
	{
		if (DSP3.BPIndex == 8)
		{
			if (!DSP3.Count)
				DSP3_Reset();

			DSP3.BMIndex = 0;
		}
		else
		{
			DSP3.DR  = DSP3.Bitplane[DSP3.BPIndex++];
			DSP3.DR |= DSP3.Bitplane[DSP3.BPIndex++] << 8;
		}
	}
}

static void DSP3_Convert (void)
{
	DSP3.Count = DSP3.DR;
	DSP3.BMIndex = 0;
	SetDSP3 = &DSP3_Convert_A;
}

static uint8_t DSP3_GetBits (uint8_t Count)
{
	if (!DSP3.BitsLeft)
	{
		DSP3.BitsLeft = Count;
		DSP3.ReqBits = 0;
	}

	do
	{
		if (!DSP3.BitCount)
		{
			DSP3.SR = 0xC0;
			return (FALSE);
		}

		DSP3.ReqBits <<= 1;
		if (DSP3.ReqData & 0x8000)
			DSP3.ReqBits++;
		DSP3.ReqData <<= 1;

		DSP3.BitCount--;
		DSP3.BitsLeft--;

	}
	while (DSP3.BitsLeft);

	return (TRUE);
}

static void DSP3_Decode_Data (void)
{
	if (!DSP3.BitCount)
	{
		if (DSP3.SR & 0x40)
		{
			DSP3.ReqData = DSP3.DR;
			DSP3.BitCount += 16;
		}
		else
		{
			DSP3.SR = 0xC0;
			return;
		}
	}

	if (DSP3.LZCode == 1)
	{
		if (!DSP3_GetBits(1))
			return;

		if (DSP3.ReqBits)
			DSP3.LZLength = 12;
		else
			DSP3.LZLength = 8;

		DSP3.LZCode++;
	}

	if (DSP3.LZCode == 2)
	{
		if (!DSP3_GetBits(DSP3.LZLength))
			return;

		DSP3.LZCode = 0;
		DSP3.Outwords--;
		if (!DSP3.Outwords)
			SetDSP3 = &DSP3_Reset;

		DSP3.SR = 0x80;
		DSP3.DR = DSP3.ReqBits;
		return;
	}

	if (DSP3.BaseCode == 0xffff)
	{
		if (!DSP3_GetBits(DSP3.BaseLength))
			return;

		DSP3.BaseCode = DSP3.ReqBits;
	}

	if (!DSP3_GetBits(DSP3.CodeLengths[DSP3.BaseCode]))
		return;

	DSP3.Symbol = DSP3.Codes[DSP3.CodeOffsets[DSP3.BaseCode] + DSP3.ReqBits];
	DSP3.BaseCode = 0xffff;

	if (DSP3.Symbol & 0xff00)
	{
		DSP3.Symbol += 0x7f02;
		DSP3.LZCode++;
	}
	else
	{
		DSP3.Outwords--;
		if (!DSP3.Outwords)
			SetDSP3 = &DSP3_Reset;
	}

	DSP3.SR = 0x80;
	DSP3.DR = DSP3.Symbol;
}

static void DSP3_Decode_Tree (void)
{
	if (!DSP3.BitCount)
	{
		DSP3.ReqData = DSP3.DR;
		DSP3.BitCount += 16;
	}

	if (!DSP3.BaseCodes)
	{
		DSP3_GetBits(1);

		if (DSP3.ReqBits)
		{
			DSP3.BaseLength = 3;
			DSP3.BaseCodes = 8;
		}
		else
		{
			DSP3.BaseLength = 2;
			DSP3.BaseCodes = 4;
		}
	}

	while (DSP3.BaseCodes)
	{
		if (!DSP3_GetBits(3))
			return;

		DSP3.ReqBits++;

		DSP3.CodeLengths[DSP3.Index] = (uint8_t) DSP3.ReqBits;
		DSP3.CodeOffsets[DSP3.Index] = DSP3.Symbol;
		DSP3.Index++;

		DSP3.Symbol += 1 << DSP3.ReqBits;
		DSP3.BaseCodes--;
	}

	DSP3.BaseCode = 0xffff;
	DSP3.LZCode = 0;

	SetDSP3 = &DSP3_Decode_Data;
	if (DSP3.BitCount)
		DSP3_Decode_Data();
}

static void DSP3_Decode_Symbols (void)
{
	DSP3.ReqData = DSP3.DR;
	DSP3.BitCount += 16;

	do
	{
		if (DSP3.BitCommand == 0xffff)
		{
			if (!DSP3_GetBits(2))
				return;

			DSP3.BitCommand = DSP3.ReqBits;
		}

		switch (DSP3.BitCommand)
		{
			case 0:
				if (!DSP3_GetBits(9))
					return;
				DSP3.Symbol = DSP3.ReqBits;
				break;

			case 1:
				DSP3.Symbol++;
				break;

			case 2:
				if (!DSP3_GetBits(1))
					return;
				DSP3.Symbol += 2 + DSP3.ReqBits;
				break;

			case 3:
				if (!DSP3_GetBits(4))
					return;
				DSP3.Symbol += 4 + DSP3.ReqBits;
				break;
		}

		DSP3.BitCommand = 0xffff;

		DSP3.Codes[DSP3.Index++] = DSP3.Symbol;
		DSP3.Codewords--;

	}
	while (DSP3.Codewords);

	DSP3.Index = 0;
	DSP3.Symbol = 0;
	DSP3.BaseCodes = 0;

	SetDSP3 = &DSP3_Decode_Tree;
	if (DSP3.BitCount)
		DSP3_Decode_Tree();
}

static void DSP3_Decode_A (void)
{
	DSP3.Outwords = DSP3.DR;
	SetDSP3 = &DSP3_Decode_Symbols;
	DSP3.BitCount = 0;
	DSP3.BitsLeft = 0;
	DSP3.Symbol = 0;
	DSP3.Index = 0;
	DSP3.BitCommand = 0xffff;
	DSP3.SR = 0xC0;
}

static void DSP3_Decode (void)
{
	DSP3.Codewords = DSP3.DR;
	SetDSP3 = &DSP3_Decode_A;
}

/* Opcodes 1E/3E bit-perfect to 'dsp3-intro' log
   src: adapted from SD Gundam X/G-Next */

static void DSP3_OP3E (void)
{
	DSP3. op3e_x = (uint8_t)  (DSP3.DR & 0x00ff);
	DSP3. op3e_y = (uint8_t) ((DSP3.DR & 0xff00) >> 8);

	DSP3_OP03();

	DSP3.op1e_terrain[DSP3.DR] = 0x00;
	DSP3.op1e_cost[DSP3.DR]    = 0xff;
	DSP3.op1e_weight[DSP3.DR]  = 0;

	DSP3.op1e_max_search_radius = 0;
	DSP3.op1e_max_path_radius   = 0;
}

static void DSP3_OP1E (void)
{
	int lcv;
	DSP3.op1e_min_radius = (uint8_t)  (DSP3.DR & 0x00ff);
	DSP3.op1e_max_radius = (uint8_t) ((DSP3.DR & 0xff00) >> 8);

	if (DSP3.op1e_min_radius == 0)
		DSP3.op1e_min_radius++;

	if (DSP3.op1e_max_search_radius >= DSP3.op1e_min_radius)
		DSP3.op1e_min_radius = DSP3.op1e_max_search_radius + 1;

	if (DSP3.op1e_max_radius > DSP3.op1e_max_search_radius)
		DSP3.op1e_max_search_radius = DSP3.op1e_max_radius;

	DSP3.op1e_lcv_radius = DSP3.op1e_min_radius;
	DSP3.op1e_lcv_steps = DSP3.op1e_min_radius;

	DSP3.op1e_lcv_turns = 6;
	DSP3.op1e_turn = 0;

	DSP3.op1e_x = DSP3. op3e_x;
	DSP3.op1e_y = DSP3. op3e_y;

	for ( lcv = 0; lcv < DSP3.op1e_min_radius; lcv++)
		DSP3_OP1E_D(DSP3.op1e_turn, &DSP3.op1e_x, &DSP3.op1e_y);

	DSP3_OP1E_A();
}

static void DSP3_OP1E_A (void)
{
	int lcv;
	if (DSP3.op1e_lcv_steps == 0)
	{
		DSP3.op1e_lcv_radius++;

		DSP3.op1e_lcv_steps = DSP3.op1e_lcv_radius;

		DSP3.op1e_x = DSP3. op3e_x;
		DSP3.op1e_y = DSP3. op3e_y;

		for ( lcv = 0; lcv < DSP3.op1e_lcv_radius; lcv++)
			DSP3_OP1E_D(DSP3.op1e_turn, &DSP3.op1e_x, &DSP3.op1e_y);
	}

	if (DSP3.op1e_lcv_radius > DSP3.op1e_max_radius)
	{
		DSP3.op1e_turn++;
		DSP3.op1e_lcv_turns--;

		DSP3.op1e_lcv_radius = DSP3.op1e_min_radius;
		DSP3.op1e_lcv_steps = DSP3.op1e_min_radius;

		DSP3.op1e_x = DSP3. op3e_x;
		DSP3.op1e_y = DSP3. op3e_y;

		for ( lcv = 0; lcv < DSP3.op1e_min_radius; lcv++)
			DSP3_OP1E_D(DSP3.op1e_turn, &DSP3.op1e_x, &DSP3.op1e_y);
	}

	if (DSP3.op1e_lcv_turns == 0)
	{
		DSP3.DR = 0xffff;
		DSP3.SR = 0x0080;
		SetDSP3 = &DSP3_OP1E_B;
		return;
	}

	DSP3.DR = (uint8_t) (DSP3.op1e_x) | ((uint8_t) (DSP3.op1e_y) << 8);
	DSP3_OP03();

	DSP3.op1e_cell = DSP3.DR;

	DSP3.SR = 0x0080;
	SetDSP3 = &DSP3_OP1E_A1;
}

static void DSP3_OP1E_A1 (void)
{
	DSP3.SR = 0x0084;
	SetDSP3 = &DSP3_OP1E_A2;
}

static void DSP3_OP1E_A2 (void)
{
	DSP3.op1e_terrain[DSP3.op1e_cell] = (uint8_t) (DSP3.DR & 0x00ff);

	DSP3.SR = 0x0084;
	SetDSP3 = &DSP3_OP1E_A3;
}

static void DSP3_OP1E_A3 (void)
{
	DSP3.op1e_cost[DSP3.op1e_cell] = (uint8_t) (DSP3.DR & 0x00ff);

	if (DSP3.op1e_lcv_radius == 1)
	{
		if (DSP3.op1e_terrain[DSP3.op1e_cell] & 1)
			DSP3.op1e_weight[DSP3.op1e_cell] = 0xff;
		else
			DSP3.op1e_weight[DSP3.op1e_cell] = DSP3.op1e_cost[DSP3.op1e_cell];
	}
	else
		DSP3.op1e_weight[DSP3.op1e_cell] = 0xff;

	DSP3_OP1E_D((int16_t) (DSP3.op1e_turn + 2), &DSP3.op1e_x, &DSP3.op1e_y);
	DSP3.op1e_lcv_steps--;

	DSP3.SR = 0x0080;
	DSP3_OP1E_A();
}

static void DSP3_OP1E_B (void)
{
	DSP3.op1e_x = DSP3. op3e_x;
	DSP3.op1e_y = DSP3. op3e_y;
	DSP3.op1e_lcv_radius = 1;

	DSP3.op1e_search = 0;

	DSP3_OP1E_B1();

	SetDSP3 = &DSP3_OP1E_C;
}

static void DSP3_OP1E_B1 (void)
{
	while (DSP3.op1e_lcv_radius < DSP3.op1e_max_radius)
	{
		DSP3.op1e_y--;

		DSP3.op1e_lcv_turns = 6;
		DSP3.op1e_turn = 5;

		while (DSP3.op1e_lcv_turns)
		{
			DSP3.op1e_lcv_steps = DSP3.op1e_lcv_radius;

			while (DSP3.op1e_lcv_steps)
			{
				DSP3_OP1E_D1(DSP3.op1e_turn, &DSP3.op1e_x, &DSP3.op1e_y);

				if (0 <= DSP3.op1e_y && DSP3.op1e_y < DSP3.WinHi && 0 <= DSP3.op1e_x && DSP3.op1e_x < DSP3.WinLo)
				{
					DSP3.DR = (uint8_t) (DSP3.op1e_x) | ((uint8_t) (DSP3.op1e_y) << 8);
					DSP3_OP03();

					DSP3.op1e_cell = DSP3.DR;
					if (DSP3.op1e_cost[DSP3.op1e_cell] < 0x80 && DSP3.op1e_terrain[DSP3.op1e_cell] < 0x40)
						DSP3_OP1E_B2(); /* end cell perimeter */
				}

				DSP3.op1e_lcv_steps--;
			} /* end search line */

			DSP3.op1e_turn--;
			if (DSP3.op1e_turn == 0)
				DSP3.op1e_turn = 6;

			DSP3.op1e_lcv_turns--;
		} /* end circle search */

		DSP3.op1e_lcv_radius++;
	} /* end radius search */
}

static void DSP3_OP1E_B2 (void)
{
	int16_t	cell, path, x, y, lcv_turns;

	path = 0xff;
	lcv_turns = 6;

	while (lcv_turns)
	{
		x = DSP3.op1e_x;
		y = DSP3.op1e_y;

		DSP3_OP1E_D1(lcv_turns, &x, &y);

		DSP3.DR = (uint8_t) (x) | ((uint8_t) (y) << 8);
		DSP3_OP03();

		cell = DSP3.DR;

		if (0 <= y && y < DSP3.WinHi && 0 <= x && x < DSP3.WinLo)
		{
			if (DSP3.op1e_terrain[cell] < 0x80 || DSP3.op1e_weight[cell] == 0)
			{
				if (DSP3.op1e_weight[cell] < path)
					path = DSP3.op1e_weight[cell];
			}
		} /* end step travel */

		lcv_turns--;
	} /* end while turns */

	if (path != 0xff)
		DSP3.op1e_weight[DSP3.op1e_cell] = path + DSP3.op1e_cost[DSP3.op1e_cell];
}

static void DSP3_OP1E_C (void)
{
	int lcv;
	DSP3.op1e_min_radius = (uint8_t)  (DSP3.DR & 0x00ff);
	DSP3.op1e_max_radius = (uint8_t) ((DSP3.DR & 0xff00) >> 8);

	if (DSP3.op1e_min_radius == 0)
		DSP3.op1e_min_radius = 1;

	if (DSP3.op1e_max_path_radius >= DSP3.op1e_min_radius)
		DSP3.op1e_min_radius = DSP3.op1e_max_path_radius + 1;

	if (DSP3.op1e_max_radius > DSP3.op1e_max_path_radius)
		DSP3.op1e_max_path_radius = DSP3.op1e_max_radius;

	DSP3.op1e_lcv_radius = DSP3.op1e_min_radius;
	DSP3.op1e_lcv_steps = DSP3.op1e_min_radius;

	DSP3.op1e_lcv_turns = 6;
	DSP3.op1e_turn = 0;

	DSP3.op1e_x = DSP3. op3e_x;
	DSP3.op1e_y = DSP3. op3e_y;

	for ( lcv = 0; lcv < DSP3.op1e_min_radius; lcv++)
		DSP3_OP1E_D(DSP3.op1e_turn, &DSP3.op1e_x, &DSP3.op1e_y);

	DSP3_OP1E_C1();
}

static void DSP3_OP1E_C1 (void)
{
	int lcv;
	if (DSP3.op1e_lcv_steps == 0)
	{
		DSP3.op1e_lcv_radius++;

		DSP3.op1e_lcv_steps = DSP3.op1e_lcv_radius;

		DSP3.op1e_x = DSP3. op3e_x;
		DSP3.op1e_y = DSP3. op3e_y;

		for ( lcv = 0; lcv < DSP3.op1e_lcv_radius; lcv++)
			DSP3_OP1E_D(DSP3.op1e_turn, &DSP3.op1e_x, &DSP3.op1e_y);
	}

	if (DSP3.op1e_lcv_radius > DSP3.op1e_max_radius)
	{
		DSP3.op1e_turn++;
		DSP3.op1e_lcv_turns--;

		DSP3.op1e_lcv_radius = DSP3.op1e_min_radius;
		DSP3.op1e_lcv_steps = DSP3.op1e_min_radius;

		DSP3.op1e_x = DSP3. op3e_x;
		DSP3.op1e_y = DSP3. op3e_y;

		for ( lcv = 0; lcv < DSP3.op1e_min_radius; lcv++)
			DSP3_OP1E_D(DSP3.op1e_turn, &DSP3.op1e_x, &DSP3.op1e_y);
	}

	if (DSP3.op1e_lcv_turns == 0)
	{
		DSP3.DR = 0xffff;
		DSP3.SR = 0x0080;
		SetDSP3 = &DSP3_Reset;
		return;
	}

	DSP3.DR = (uint8_t) (DSP3.op1e_x) | ((uint8_t) (DSP3.op1e_y) << 8);
	DSP3_OP03();

	DSP3.op1e_cell = DSP3.DR;

	DSP3.SR = 0x0080;
	SetDSP3 = &DSP3_OP1E_C2;
}

static void DSP3_OP1E_C2 (void)
{
	DSP3.DR = DSP3.op1e_weight[DSP3.op1e_cell];

	DSP3_OP1E_D((int16_t) (DSP3.op1e_turn + 2), &DSP3.op1e_x, &DSP3.op1e_y);
	DSP3.op1e_lcv_steps--;

	DSP3.SR = 0x0084;
	SetDSP3 = &DSP3_OP1E_C1;
}

static void DSP3_OP1E_D (int16_t move, int16_t *lo, int16_t *hi)
{
	uint32_t dataOfs;
	int16_t	Lo;
	int16_t	Hi;

	dataOfs = ((move << 1) + 0x03b2) & 0x03ff;

	DSP3.AddHi = DSP3_DataROM[dataOfs];
	DSP3.AddLo = DSP3_DataROM[dataOfs + 1];

	Lo = (uint8_t) (*lo);
	Hi = (uint8_t) (*hi);

	if (Lo & 1)
		Hi += (DSP3.AddLo & 1);

	DSP3.AddLo += Lo;
	DSP3.AddHi += Hi;

	if (DSP3.AddLo < 0)
		DSP3.AddLo += DSP3.WinLo;
	else
	if (DSP3.AddLo >= DSP3.WinLo)
		DSP3.AddLo -= DSP3.WinLo;

	if (DSP3.AddHi < 0)
		DSP3.AddHi += DSP3.WinHi;
	else
	if (DSP3.AddHi >= DSP3.WinHi)
		DSP3.AddHi -= DSP3.WinHi;

	*lo = DSP3.AddLo;
	*hi = DSP3.AddHi;
}

static void DSP3_OP1E_D1 (int16_t move, int16_t *lo, int16_t *hi)
{
	static const uint16_t	HiAdd[] =
	{
		0x00, 0xFF, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x01, 0x00, 0xFF, 0x00
	};

	static const uint16_t	LoAdd[] =
	{
		0x00, 0x00, 0x01, 0x01, 0x00, 0xFF, 0xFF, 0x00
	};

	int16_t	Lo, Hi;

	if ((*lo) & 1)
		DSP3.AddHi = HiAdd[move + 8];
	else
		DSP3.AddHi = HiAdd[move + 0];

	DSP3.AddLo = LoAdd[move];

	Lo = (uint8_t) (*lo);
	Hi = (uint8_t) (*hi);

	if (Lo & 1)
		Hi += (DSP3.AddLo & 1);

	DSP3.AddLo += Lo;
	DSP3.AddHi += Hi;

	*lo = DSP3.AddLo;
	*hi = DSP3.AddHi;
}

static void DSP3_OP10 (void)
{
	if (DSP3.DR == 0xffff)
		DSP3_Reset();
	else
		DSP3.DR = DSP3.DR;	/* absorb 2 bytes */
}

/*
static void DSP3_OP0C_A (void)
{
	// absorb 2 bytes
	DSP3.DR = 0;
	SetDSP3 = &DSP3_Reset;
}
*/

static void DSP3_OP0C (void)
{
	/* absorb 2 bytes */
	DSP3.DR = 0;
	/* SetDSP3 = &DSP3_OP0C_A; */
	SetDSP3 = &DSP3_Reset;
}

static void DSP3_OP1C_C (void)
{
	/* return 2 bytes */
	DSP3.DR = 0;
	SetDSP3 = &DSP3_Reset;
}

static void DSP3_OP1C_B (void)
{
	/* return 2 bytes */
	DSP3.DR = 0;
	SetDSP3 = &DSP3_OP1C_C;
}

static void DSP3_OP1C_A (void)
{
	/* absorb 2 bytes */
	SetDSP3 = &DSP3_OP1C_B;
}

static void DSP3_OP1C (void)
{
	/* absorb 2 bytes */
	SetDSP3 = &DSP3_OP1C_A;
}

static void DSP3_Command (void)
{
	if (DSP3.DR < 0x40)
	{
		switch (DSP3.DR)
		{
			case 0x02: SetDSP3 = &DSP3_Coordinate; break;
			case 0x03: SetDSP3 = &DSP3_OP03;       break;
			case 0x06: SetDSP3 = &DSP3_OP06;       break;
			case 0x07: SetDSP3 = &DSP3_OP07;       return;
			case 0x0c: SetDSP3 = &DSP3_OP0C;       break;
			case 0x0f: SetDSP3 = &DSP3_TestMemory; break;
			case 0x10: SetDSP3 = &DSP3_OP10;       break;
			case 0x18: SetDSP3 = &DSP3_Convert;    break;
			case 0x1c: SetDSP3 = &DSP3_OP1C;       break;
			case 0x1e: SetDSP3 = &DSP3_OP1E;       break;
			case 0x1f: SetDSP3 = &DSP3_MemoryDump; break;
			case 0x38: SetDSP3 = &DSP3_Decode;     break;
			case 0x3e: SetDSP3 = &DSP3_OP3E;       break;
			default:
				return;
		}

		DSP3.SR = 0x0080;
		DSP3.Index = 0;
	}
}

void DSP3SetByte (uint8_t byte, uint16_t address)
{
	if (address < DSP0.boundary)
	{
		if (DSP3.SR & 0x04)
		{
			DSP3.DR = (DSP3.DR & 0xff00) + byte;
			(*SetDSP3)();
		}
		else
		{
			DSP3.SR ^= 0x10;

			if (DSP3.SR & 0x10)
				DSP3.DR = (DSP3.DR & 0xff00) + byte;
			else
			{
				DSP3.DR = (DSP3.DR & 0x00ff) + (byte << 8);
				(*SetDSP3)();
			}
		}
	}
}

uint8_t DSP3GetByte (uint16_t address)
{
	if (address < DSP0.boundary)
	{
		uint8_t	byte;

		if (DSP3.SR & 0x04)
		{
			byte = (uint8_t) DSP3.DR;
			(*SetDSP3)();
		}
		else
		{
			DSP3.SR ^= 0x10;

			if (DSP3.SR & 0x10)
				byte = (uint8_t) (DSP3.DR);
			else
			{
				byte = (uint8_t) (DSP3.DR >> 8);
				(*SetDSP3)();
			}
		}

		return (byte);
	}

	return (uint8_t) DSP3.SR;
}

/***********************************************************************************
 DSP4
***********************************************************************************/

/*
  Due recognition and credit are given on Overload's DSP website.
  Thank those contributors for their hard work on this chip.

  Fixed-point math reminder:
  [sign, integer, fraction]
  1.15.00 * 1.15.00 = 2.30.00 -> 1.30.00 (DSP) -> 1.31.00 (LSB is '0')
  1.15.00 * 1.00.15 = 2.15.15 -> 1.15.15 (DSP) -> 1.15.16 (LSB is '0')
*/

#define DSP4_CLEAR_OUT() \
	{ DSP4.out_count = 0; DSP4.out_index = 0; }

#define DSP4_WRITE_BYTE(d) \
	{ WRITE_WORD(DSP4.output + DSP4.out_count, (d)); DSP4.out_count++; }

#define DSP4_WRITE_WORD(d) \
	{ WRITE_WORD(DSP4.output + DSP4.out_count, (d)); DSP4.out_count += 2; }

#ifndef MSB_FIRST
#define DSP4_WRITE_16_WORD(d) \
	{ memcpy(DSP4.output + DSP4.out_count, (d), 32); DSP4.out_count += 32; }
#else
#define DSP4_WRITE_16_WORD(d) \
	{ int p; for ( p = 0; p < 16; p++) DSP4_WRITE_WORD((d)[p]); }
#endif

/* used to wait for dsp i/o */
#define DSP4_WAIT(x) \
	DSP4.in_index = 0; DSP4.Logic = (x); return

/* 1.7.8 -> 1.15.16 */
#define SEX78(a)	(((int32_t) ((int16_t) (a))) << 8)

/* 1.15.0 -> 1.15.16 */
#define DSP_SEX16(a)	(((int32_t) ((int16_t) (a))) << 16)

static int16_t DSP4_READ_WORD (void)
{
	int16_t	out;

	out = READ_WORD(DSP4.parameters + DSP4.in_index);
	DSP4.in_index += 2;

	return (out);
}

static int32_t DSP4_READ_DWORD (void)
{
	int32_t	out;

	out = READ_DWORD(DSP4.parameters + DSP4.in_index);
	DSP4.in_index += 4;

	return (out);
}

static int16_t DSP4_Inverse (int16_t value)
{
	/* Attention: This lookup table is not verified */
	static const uint16_t	div_lut[64] =
	{
		0x0000, 0x8000, 0x4000, 0x2aaa, 0x2000, 0x1999, 0x1555, 0x1249,
		0x1000, 0x0e38, 0x0ccc, 0x0ba2, 0x0aaa, 0x09d8, 0x0924, 0x0888,
		0x0800, 0x0787, 0x071c, 0x06bc, 0x0666, 0x0618, 0x05d1, 0x0590,
		0x0555, 0x051e, 0x04ec, 0x04bd, 0x0492, 0x0469, 0x0444, 0x0421,
		0x0400, 0x03e0, 0x03c3, 0x03a8, 0x038e, 0x0375, 0x035e, 0x0348,
		0x0333, 0x031f, 0x030c, 0x02fa, 0x02e8, 0x02d8, 0x02c8, 0x02b9,
		0x02aa, 0x029c, 0x028f, 0x0282, 0x0276, 0x026a, 0x025e, 0x0253,
		0x0249, 0x023e, 0x0234, 0x022b, 0x0222, 0x0219, 0x0210, 0x0208
	};

	/* saturate bounds */
	if (value < 0)
		value = 0;
	if (value > 63)
		value = 63;

	return (div_lut[value]);
}

static void DSP4_Multiply (int16_t Multiplicand, int16_t Multiplier, int32_t *Product)
{
	*Product = (Multiplicand * Multiplier << 1) >> 1;
}

static void DSP4_OP01 (void)
{
	DSP4.waiting4command = FALSE;

	/* op flow control */
	switch (DSP4.Logic)
   {
      case 1:
         goto resume1;;
      case 2:
         goto resume2;
      case 3:
         goto resume3;
   }

	/* process initial inputs*/

	/* sort inputs*/
	DSP4.world_y           = DSP4_READ_DWORD();
	DSP4.poly_bottom[0][0] = DSP4_READ_WORD();
	DSP4.poly_top[0][0]    = DSP4_READ_WORD();
	DSP4.poly_cx[1][0]     = DSP4_READ_WORD();
	DSP4.viewport_bottom   = DSP4_READ_WORD();
	DSP4.world_x           = DSP4_READ_DWORD();
	DSP4.poly_cx[0][0]     = DSP4_READ_WORD();
	DSP4.poly_ptr[0][0]    = DSP4_READ_WORD();
	DSP4.world_yofs        = DSP4_READ_WORD();
	DSP4.world_dy          = DSP4_READ_DWORD();
	DSP4.world_dx          = DSP4_READ_DWORD();
	DSP4.distance          = DSP4_READ_WORD();
	DSP4_READ_WORD(); /* 0x0000*/
	DSP4.world_xenv        = DSP4_READ_DWORD();
	DSP4.world_ddy         = DSP4_READ_WORD();
	DSP4.world_ddx         = DSP4_READ_WORD();
	DSP4.view_yofsenv      = DSP4_READ_WORD();

	/* initial (x, y, offset) at starting raster line*/
	DSP4.view_x1         = (DSP4.world_x + DSP4.world_xenv) >> 16;
	DSP4.view_y1         = DSP4.world_y >> 16;
	DSP4.view_xofs1      = DSP4.world_x >> 16;
	DSP4.view_yofs1      = DSP4.world_yofs;
	DSP4.view_turnoff_x  = 0;
	DSP4.view_turnoff_dx = 0;

	/* first raster line*/
	DSP4.poly_raster[0][0] = DSP4.poly_bottom[0][0];

	do
	{
		/* process one iteration of projection */

		/* perspective projection of world (x, y, scroll) points*/
		/* based on the current projection lines*/
		DSP4.view_x2    = (((DSP4.world_x + DSP4.world_xenv) >> 16) * DSP4.distance >> 15) + (DSP4.view_turnoff_x * DSP4.distance >> 15);
		DSP4.view_y2    = (DSP4.world_y >> 16) * DSP4.distance >> 15;
		DSP4.view_xofs2 = DSP4.view_x2;
		DSP4.view_yofs2 = (DSP4.world_yofs * DSP4.distance >> 15) + DSP4.poly_bottom[0][0] - DSP4.view_y2;

		/* 1. World x-location before transformation*/
		/* 2. Viewer x-position at the next*/
		/* 3. World y-location before perspective projection*/
		/* 4. Viewer y-position below the horizon*/
		/* 5. Number of raster lines drawn in this iteration*/
		DSP4_CLEAR_OUT();
		DSP4_WRITE_WORD((DSP4.world_x + DSP4.world_xenv) >> 16);
		DSP4_WRITE_WORD(DSP4.view_x2);
		DSP4_WRITE_WORD(DSP4.world_y >> 16);
		DSP4_WRITE_WORD(DSP4.view_y2);

		/* SR = 0x00*/

		/* determine # of raster lines used*/
		DSP4.segments = DSP4.poly_raster[0][0] - DSP4.view_y2;

		/* prevent overdraw*/
		if (DSP4.view_y2 >= DSP4.poly_raster[0][0])
			DSP4.segments = 0;
		else
			DSP4.poly_raster[0][0] = DSP4.view_y2;

		/* don't draw outside the window*/
		if (DSP4.view_y2 < DSP4.poly_top[0][0])
		{
			DSP4.segments = 0;

			/* flush remaining raster lines*/
			if (DSP4.view_y1 >= DSP4.poly_top[0][0])
				DSP4.segments = DSP4.view_y1 - DSP4.poly_top[0][0];
		}

		/* SR = 0x80*/

		DSP4_WRITE_WORD(DSP4.segments);

		/* scan next command if no SR check needed*/
		if (DSP4.segments)
		{
			int32_t	px_dx, py_dy;
			int32_t	x_scroll, y_scroll;

			/* SR = 0x00*/

			/* linear interpolation (lerp) between projected points*/
			px_dx = (DSP4.view_xofs2 - DSP4.view_xofs1) * DSP4_Inverse(DSP4.segments) << 1;
			py_dy = (DSP4.view_yofs2 - DSP4.view_yofs1) * DSP4_Inverse(DSP4.segments) << 1;

			/* starting step values*/
			x_scroll = DSP_SEX16(DSP4.poly_cx[0][0] + DSP4.view_xofs1);
			y_scroll = DSP_SEX16(-DSP4.viewport_bottom + DSP4.view_yofs1 + DSP4.view_yofsenv + DSP4.poly_cx[1][0] - DSP4.world_yofs);

			/* SR = 0x80*/

			/* rasterize line*/
			for (DSP4.lcv = 0; DSP4.lcv < DSP4.segments; DSP4.lcv++)
			{
				/* 1. HDMA memory pointer (bg1)*/
				/* 2. vertical scroll offset ($210E)*/
				/* 3. horizontal scroll offset ($210D)*/
				DSP4_WRITE_WORD(DSP4.poly_ptr[0][0]);
				DSP4_WRITE_WORD((y_scroll + 0x8000) >> 16);
				DSP4_WRITE_WORD((x_scroll + 0x8000) >> 16);

				/* update memory address*/
				DSP4.poly_ptr[0][0] -= 4;

				/* update screen values*/
				x_scroll += px_dx;
				y_scroll += py_dy;
			}
		}

		/* Post-update*/

		/* update new viewer (x, y, scroll) to last raster line drawn*/
		DSP4.view_x1    = DSP4.view_x2;
		DSP4.view_y1    = DSP4.view_y2;
		DSP4.view_xofs1 = DSP4.view_xofs2;
		DSP4.view_yofs1 = DSP4.view_yofs2;

		/* add deltas for projection lines*/
		DSP4.world_dx += SEX78(DSP4.world_ddx);
		DSP4.world_dy += SEX78(DSP4.world_ddy);

		/* update projection lines*/
		DSP4.world_x += (DSP4.world_dx + DSP4.world_xenv);
		DSP4.world_y += DSP4.world_dy;

		/* update road turnoff position*/
		DSP4.view_turnoff_x += DSP4.view_turnoff_dx;

		/* command check*/

		/* scan next command*/
		DSP4.in_count = 2;
		DSP4_WAIT(1);
		
		resume1:

		/* check for termination*/
		DSP4.distance = DSP4_READ_WORD();
		if (DSP4.distance == -0x8000)
			break;

		/* road turnoff*/
		if ((uint16_t) DSP4.distance == 0x8001)
		{
			DSP4.in_count = 6;
			DSP4_WAIT(2);

			resume2:

			DSP4.distance        = DSP4_READ_WORD();
			DSP4.view_turnoff_x  = DSP4_READ_WORD();
			DSP4.view_turnoff_dx = DSP4_READ_WORD();

			/* factor in new changes*/
			DSP4.view_x1    += (DSP4.view_turnoff_x * DSP4.distance >> 15);
			DSP4.view_xofs1 += (DSP4.view_turnoff_x * DSP4.distance >> 15);

			/* update stepping values*/
			DSP4.view_turnoff_x += DSP4.view_turnoff_dx;

			DSP4.in_count = 2;
			DSP4_WAIT(1);
		}

		/* already have 2 bytes read*/
		DSP4.in_count = 6;
		DSP4_WAIT(3);

		resume3:

		/* inspect inputs*/
		DSP4.world_ddy    = DSP4_READ_WORD();
		DSP4.world_ddx    = DSP4_READ_WORD();
		DSP4.view_yofsenv = DSP4_READ_WORD();

		/* no envelope here*/
		DSP4.world_xenv = 0;
	}
	while (1);

	/* terminate op*/
	DSP4.waiting4command = TRUE;
}

static void DSP4_OP03 (void)
{
	DSP4.OAM_RowMax = 33;
	memset(DSP4.OAM_Row, 0, 64);
}

static void DSP4_OP05 (void)
{
	DSP4.OAM_index = 0;
	DSP4.OAM_bits = 0;
	memset(DSP4.OAM_attr, 0, 32);
	DSP4.sprite_count = 0;
}

static void DSP4_OP06 (void)
{
	DSP4_CLEAR_OUT();
	DSP4_WRITE_16_WORD(DSP4.OAM_attr);
}

static void DSP4_OP07 (void)
{
	DSP4.waiting4command = FALSE;

	/* op flow control*/
	switch (DSP4.Logic)
	{
		case 1:
         goto resume1;
		case 2:
         goto resume2;
	}

	/* sort inputs*/

	DSP4.world_y           = DSP4_READ_DWORD();
	DSP4.poly_bottom[0][0] = DSP4_READ_WORD();
	DSP4.poly_top[0][0]    = DSP4_READ_WORD();
	DSP4.poly_cx[1][0]     = DSP4_READ_WORD();
	DSP4.viewport_bottom   = DSP4_READ_WORD();
	DSP4.world_x           = DSP4_READ_DWORD();
	DSP4.poly_cx[0][0]     = DSP4_READ_WORD();
	DSP4.poly_ptr[0][0]    = DSP4_READ_WORD();
	DSP4.world_yofs        = DSP4_READ_WORD();
	DSP4.distance          = DSP4_READ_WORD();
	DSP4.view_y2           = DSP4_READ_WORD();
	DSP4.view_dy           = DSP4_READ_WORD() * DSP4.distance >> 15;
	DSP4.view_x2           = DSP4_READ_WORD();
	DSP4.view_dx           = DSP4_READ_WORD() * DSP4.distance >> 15;
	DSP4.view_yofsenv      = DSP4_READ_WORD();

	/* initial (x, y, offset) at starting raster line*/
	DSP4.view_x1    = DSP4.world_x >> 16;
	DSP4.view_y1    = DSP4.world_y >> 16;
	DSP4.view_xofs1 = DSP4.view_x1;
	DSP4.view_yofs1 = DSP4.world_yofs;

	/* first raster line*/
	DSP4.poly_raster[0][0] = DSP4.poly_bottom[0][0];

	do
	{
		/* process one iteration of projection*/

		/* add shaping*/
		DSP4.view_x2 += DSP4.view_dx;
		DSP4.view_y2 += DSP4.view_dy;

		/* vertical scroll calculation*/
		DSP4.view_xofs2 = DSP4.view_x2;
		DSP4.view_yofs2 = (DSP4.world_yofs * DSP4.distance >> 15) + DSP4.poly_bottom[0][0] - DSP4.view_y2;

		/* 1. Viewer x-position at the next*/
		/* 2. Viewer y-position below the horizon*/
		/* 3. Number of raster lines drawn in this iteration*/
		DSP4_CLEAR_OUT();
		DSP4_WRITE_WORD(DSP4.view_x2);
		DSP4_WRITE_WORD(DSP4.view_y2);

		/* SR = 0x00*/

		/* determine # of raster lines used*/
		DSP4.segments = DSP4.view_y1 - DSP4.view_y2;

		/* prevent overdraw*/
		if (DSP4.view_y2 >= DSP4.poly_raster[0][0])
			DSP4.segments = 0;
		else
			DSP4.poly_raster[0][0] = DSP4.view_y2;

		/* don't draw outside the window*/
		if (DSP4.view_y2 < DSP4.poly_top[0][0])
		{
			DSP4.segments = 0;

			/* flush remaining raster lines*/
			if (DSP4.view_y1 >= DSP4.poly_top[0][0])
				DSP4.segments = DSP4.view_y1 - DSP4.poly_top[0][0];
		}

		/* SR = 0x80*/

		DSP4_WRITE_WORD(DSP4.segments);

		/* scan next command if no SR check needed*/
		if (DSP4.segments)
		{
			int32_t	px_dx, py_dy;
			int32_t	x_scroll, y_scroll;

			/* SR = 0x00*/

			/* linear interpolation (lerp) between projected points*/
			px_dx = (DSP4.view_xofs2 - DSP4.view_xofs1) * DSP4_Inverse(DSP4.segments) << 1;
			py_dy = (DSP4.view_yofs2 - DSP4.view_yofs1) * DSP4_Inverse(DSP4.segments) << 1;

			/* starting step values*/
			x_scroll = DSP_SEX16(DSP4.poly_cx[0][0] + DSP4.view_xofs1);
			y_scroll = DSP_SEX16(-DSP4.viewport_bottom + DSP4.view_yofs1 + DSP4.view_yofsenv + DSP4.poly_cx[1][0] - DSP4.world_yofs);

			/* SR = 0x80*/

			/* rasterize line*/
			for (DSP4.lcv = 0; DSP4.lcv < DSP4.segments; DSP4.lcv++)
			{
				/* 1. HDMA memory pointer (bg2)*/
				/* 2. vertical scroll offset ($2110)*/
				/* 3. horizontal scroll offset ($210F)*/
				DSP4_WRITE_WORD(DSP4.poly_ptr[0][0]);
				DSP4_WRITE_WORD((y_scroll + 0x8000) >> 16);
				DSP4_WRITE_WORD((x_scroll + 0x8000) >> 16);

				/* update memory address*/
				DSP4.poly_ptr[0][0] -= 4;

				/* update screen values*/
				x_scroll += px_dx;
				y_scroll += py_dy;
			}
		}

		/* Post-update*/

		/* update new viewer (x, y, scroll) to last raster line drawn */
		DSP4.view_x1    = DSP4.view_x2;
		DSP4.view_y1    = DSP4.view_y2;
		DSP4.view_xofs1 = DSP4.view_xofs2;
		DSP4.view_yofs1 = DSP4.view_yofs2;

		/* command check*/

		/* scan next command*/
		DSP4.in_count = 2;
		DSP4_WAIT(1);

		resume1:

		/* check for opcode termination*/
		DSP4.distance = DSP4_READ_WORD();
		if (DSP4.distance == -0x8000)
			break;

		/* already have 2 bytes in queue*/
		DSP4.in_count = 10;
		DSP4_WAIT(2);

		resume2:

		/* inspect inputs*/
		DSP4.view_y2      = DSP4_READ_WORD();
		DSP4.view_dy      = DSP4_READ_WORD() * DSP4.distance >> 15;
		DSP4.view_x2      = DSP4_READ_WORD();
		DSP4.view_dx      = DSP4_READ_WORD() * DSP4.distance >> 15;
		DSP4.view_yofsenv = DSP4_READ_WORD();
	}
	while (1);

	DSP4.waiting4command = TRUE;
}

static void DSP4_OP08 (void)
{
	int16_t	win_left, win_right;
	int16_t	view_x[2], view_y[2];
	int16_t	envelope[2][2];

	DSP4.waiting4command = FALSE;

	/* op flow control*/
	switch (DSP4.Logic)
	{
		case 1:
         goto resume1;
		case 2:
         goto resume2;
	}

	/* process initial inputs for two polygons*/

	/* clip values*/
	DSP4.poly_clipRt[0][0] = DSP4_READ_WORD();
	DSP4.poly_clipRt[0][1] = DSP4_READ_WORD();
	DSP4.poly_clipRt[1][0] = DSP4_READ_WORD();
	DSP4.poly_clipRt[1][1] = DSP4_READ_WORD();

	DSP4.poly_clipLf[0][0] = DSP4_READ_WORD();
	DSP4.poly_clipLf[0][1] = DSP4_READ_WORD();
	DSP4.poly_clipLf[1][0] = DSP4_READ_WORD();
	DSP4.poly_clipLf[1][1] = DSP4_READ_WORD();

	/* unknown (constant) (ex. 1P/2P = $00A6, $00A6, $00A6, $00A6)*/
	DSP4_READ_WORD();
	DSP4_READ_WORD();
	DSP4_READ_WORD();
	DSP4_READ_WORD();

	/* unknown (constant) (ex. 1P/2P = $00A5, $00A5, $00A7, $00A7)*/
	DSP4_READ_WORD();
	DSP4_READ_WORD();
	DSP4_READ_WORD();
	DSP4_READ_WORD();

	/* polygon centering (left, right)*/
	DSP4.poly_cx[0][0] = DSP4_READ_WORD();
	DSP4.poly_cx[0][1] = DSP4_READ_WORD();
	DSP4.poly_cx[1][0] = DSP4_READ_WORD();
	DSP4.poly_cx[1][1] = DSP4_READ_WORD();

	/* HDMA pointer locations*/
	DSP4.poly_ptr[0][0] = DSP4_READ_WORD();
	DSP4.poly_ptr[0][1] = DSP4_READ_WORD();
	DSP4.poly_ptr[1][0] = DSP4_READ_WORD();
	DSP4.poly_ptr[1][1] = DSP4_READ_WORD();

	/* starting raster line below the horizon*/
	DSP4.poly_bottom[0][0] = DSP4_READ_WORD();
	DSP4.poly_bottom[0][1] = DSP4_READ_WORD();
	DSP4.poly_bottom[1][0] = DSP4_READ_WORD();
	DSP4.poly_bottom[1][1] = DSP4_READ_WORD();

	/* top boundary line to clip*/
	DSP4.poly_top[0][0] = DSP4_READ_WORD();
	DSP4.poly_top[0][1] = DSP4_READ_WORD();
	DSP4.poly_top[1][0] = DSP4_READ_WORD();
	DSP4.poly_top[1][1] = DSP4_READ_WORD();

	/* unknown*/
	/* (ex. 1P = $2FC8, $0034, $FF5C, $0035)*/
/*	*/
	/* (ex. 2P = $3178, $0034, $FFCC, $0035)*/
	/* (ex. 2P = $2FC8, $0034, $FFCC, $0035)*/
	DSP4_READ_WORD();
	DSP4_READ_WORD();
	DSP4_READ_WORD();
	DSP4_READ_WORD();

	/* look at guidelines for both polygon shapes*/
	DSP4.distance = DSP4_READ_WORD();
	view_x[0] = DSP4_READ_WORD();
	view_y[0] = DSP4_READ_WORD();
	view_x[1] = DSP4_READ_WORD();
	view_y[1] = DSP4_READ_WORD();

	/* envelope shaping guidelines (one frame only)*/
	envelope[0][0] = DSP4_READ_WORD();
	envelope[0][1] = DSP4_READ_WORD();
	envelope[1][0] = DSP4_READ_WORD();
	envelope[1][1] = DSP4_READ_WORD();

	/* starting base values to project from*/
	DSP4.poly_start[0] = view_x[0];
	DSP4.poly_start[1] = view_x[1];

	/* starting raster lines to begin drawing*/
	DSP4.poly_raster[0][0] = view_y[0];
	DSP4.poly_raster[0][1] = view_y[0];
	DSP4.poly_raster[1][0] = view_y[1];
	DSP4.poly_raster[1][1] = view_y[1];

	/* starting distances*/
	DSP4.poly_plane[0] = DSP4.distance;
	DSP4.poly_plane[1] = DSP4.distance;

	/* SR = 0x00*/

	/* re-center coordinates*/
	win_left  = DSP4.poly_cx[0][0] - view_x[0] + envelope[0][0];
	win_right = DSP4.poly_cx[0][1] - view_x[0] + envelope[0][1];

	/* saturate offscreen data for polygon #1*/
	if (win_left  < DSP4.poly_clipLf[0][0])
		win_left  = DSP4.poly_clipLf[0][0];
	if (win_left  > DSP4.poly_clipRt[0][0])
		win_left  = DSP4.poly_clipRt[0][0];
	if (win_right < DSP4.poly_clipLf[0][1])
		win_right = DSP4.poly_clipLf[0][1];
	if (win_right > DSP4.poly_clipRt[0][1])
		win_right = DSP4.poly_clipRt[0][1];

	/* SR = 0x80*/

	/* initial output for polygon #1*/
	DSP4_CLEAR_OUT();
	DSP4_WRITE_BYTE(win_left  & 0xff);
	DSP4_WRITE_BYTE(win_right & 0xff);

	do
	{
		int16_t	polygon;

		/* command check*/

		/* scan next command*/
		DSP4.in_count = 2;
		DSP4_WAIT(1);

		resume1:

		/* terminate op*/
		DSP4.distance = DSP4_READ_WORD();
		if (DSP4.distance == -0x8000)
			break;

		/* already have 2 bytes in queue*/
		DSP4.in_count = 16;
		DSP4_WAIT(2);

		resume2:

		/* look at guidelines for both polygon shapes*/
		view_x[0] = DSP4_READ_WORD();
		view_y[0] = DSP4_READ_WORD();
		view_x[1] = DSP4_READ_WORD();
		view_y[1] = DSP4_READ_WORD();

		/* envelope shaping guidelines (one frame only)*/
		envelope[0][0] = DSP4_READ_WORD();
		envelope[0][1] = DSP4_READ_WORD();
		envelope[1][0] = DSP4_READ_WORD();
		envelope[1][1] = DSP4_READ_WORD();

		/* projection begins*/

		/* init*/
		DSP4_CLEAR_OUT();

		/* solid polygon renderer - 2 shapes*/

		for (polygon = 0; polygon < 2; polygon++)
		{
			int32_t	left_inc, right_inc;
			int16_t	x1_final, x2_final;
			int16_t	env[2][2];
			int16_t	poly;

			/* SR = 0x00*/

			/* # raster lines to draw*/
			DSP4.segments = DSP4.poly_raster[polygon][0] - view_y[polygon];

			/* prevent overdraw*/
			if (DSP4.segments > 0)
			{
				/* bump drawing cursor*/
				DSP4.poly_raster[polygon][0] = view_y[polygon];
				DSP4.poly_raster[polygon][1] = view_y[polygon];
			}
			else
				DSP4.segments = 0;

			/* don't draw outside the window*/
			if (view_y[polygon] < DSP4.poly_top[polygon][0])
			{
				DSP4.segments = 0;

				/* flush remaining raster lines*/
				if (view_y[polygon] >= DSP4.poly_top[polygon][0])
					DSP4.segments = view_y[polygon] - DSP4.poly_top[polygon][0];
			}

			/* SR = 0x80*/

			/* tell user how many raster structures to read in*/
			DSP4_WRITE_WORD(DSP4.segments);

			/* normal parameters*/
			poly = polygon;

			/* scan next command if no SR check needed*/
			if (DSP4.segments)
			{
				int32_t	w_left, w_right;

				/* road turnoff selection*/
				if ((uint16_t) envelope[polygon][0] == (uint16_t) 0xc001)
					poly = 1;
				else
				if (envelope[polygon][1] == 0x3fff)
					poly = 1;

				/* left side of polygon*/

				/* perspective correction on additional shaping parameters*/
				env[0][0] = envelope[polygon][0] * DSP4.poly_plane[poly] >> 15;
				env[0][1] = envelope[polygon][0] * DSP4.distance >> 15;

				/* project new shapes (left side)*/
				x1_final = view_x[poly] + env[0][0];
				x2_final = DSP4.poly_start[poly] + env[0][1];

				/* interpolate between projected points with shaping*/
				left_inc = (x2_final - x1_final) * DSP4_Inverse(DSP4.segments) << 1;
				if (DSP4.segments == 1)
					left_inc = -left_inc;

				/* right side of polygon*/

				/* perspective correction on additional shaping parameters*/
				env[1][0] = envelope[polygon][1] * DSP4.poly_plane[poly] >> 15;
				env[1][1] = envelope[polygon][1] * DSP4.distance >> 15;

				/* project new shapes (right side)*/
				x1_final = view_x[poly] + env[1][0];
				x2_final = DSP4.poly_start[poly] + env[1][1];

				/* interpolate between projected points with shaping*/
				right_inc = (x2_final - x1_final) * DSP4_Inverse(DSP4.segments) << 1;
				if (DSP4.segments == 1)
					right_inc = -right_inc;

				/* update each point on the line*/

				w_left  = DSP_SEX16(DSP4.poly_cx[polygon][0] - DSP4.poly_start[poly] + env[0][0]);
				w_right = DSP_SEX16(DSP4.poly_cx[polygon][1] - DSP4.poly_start[poly] + env[1][0]);

				/* update distance drawn into world*/
				DSP4.poly_plane[polygon] = DSP4.distance;

				/* rasterize line*/
				for (DSP4.lcv = 0; DSP4.lcv < DSP4.segments; DSP4.lcv++)
				{
					int16_t	x_left, x_right;

					/* project new coordinates*/
					w_left  += left_inc;
					w_right += right_inc;

					/* grab integer portion, drop fraction (no rounding)*/
					x_left  = w_left  >> 16;
					x_right = w_right >> 16;

					/* saturate offscreen data*/
					if (x_left  < DSP4.poly_clipLf[polygon][0])
						x_left  = DSP4.poly_clipLf[polygon][0];
					if (x_left  > DSP4.poly_clipRt[polygon][0])
						x_left  = DSP4.poly_clipRt[polygon][0];
					if (x_right < DSP4.poly_clipLf[polygon][1])
						x_right = DSP4.poly_clipLf[polygon][1];
					if (x_right > DSP4.poly_clipRt[polygon][1])
						x_right = DSP4.poly_clipRt[polygon][1];

					/* 1. HDMA memory pointer*/
					/* 2. Left window position ($2126/$2128)*/
					/* 3. Right window position ($2127/$2129)*/
					DSP4_WRITE_WORD(DSP4.poly_ptr[polygon][0]);
					DSP4_WRITE_BYTE(x_left  & 0xff);
					DSP4_WRITE_BYTE(x_right & 0xff);

					/* update memory pointers*/
					DSP4.poly_ptr[polygon][0] -= 4;
					DSP4.poly_ptr[polygon][1] -= 4;
				} /* end rasterize line*/
			}

			/* Post-update*/

			/* new projection spot to continue rasterizing from*/
			DSP4.poly_start[polygon] = view_x[poly];
		} /* end polygon rasterizer*/
	}
	while (1);

	/* unknown output*/
	DSP4_CLEAR_OUT();
	DSP4_WRITE_WORD(0);

	DSP4.waiting4command = TRUE;
}

static void DSP4_OP0B (uint8_t *draw, int16_t sp_x, int16_t sp_y, int16_t sp_attr, uint8_t size, uint8_t stop)
{
	int16_t	Row1, Row2;

	/* SR = 0x00*/

	/* align to nearest 8-pixel row*/
	Row1 = (sp_y >> 3) & 0x1f;
	Row2 = (Row1 + 1)  & 0x1f;

	/* check boundaries*/
	if (!((sp_y < 0) || ((sp_y & 0x01ff) < 0x00eb)))
		*draw = 0;

	if (size)
	{
		if (DSP4.OAM_Row[Row1] + 1 >= DSP4.OAM_RowMax)
			*draw = 0;
		if (DSP4.OAM_Row[Row2] + 1 >= DSP4.OAM_RowMax)
			*draw = 0;
	}
	else
	{
		if (DSP4.OAM_Row[Row1] >= DSP4.OAM_RowMax)
			*draw = 0;
	}

	/* emulator fail-safe (unknown if this really exists)*/
	if (DSP4.sprite_count >= 128)
		*draw = 0;

	/* SR = 0x80*/

	if (*draw)
	{
		/* Row tiles*/
		if (size)
		{
			DSP4.OAM_Row[Row1] += 2;
			DSP4.OAM_Row[Row2] += 2;
		}
		else
			DSP4.OAM_Row[Row1]++;

		/* yield OAM output*/
		DSP4_WRITE_WORD(1);

		/* pack OAM data: x, y, name, attr*/
		DSP4_WRITE_BYTE(sp_x & 0xff);
		DSP4_WRITE_BYTE(sp_y & 0xff);
		DSP4_WRITE_WORD(sp_attr);

		DSP4.sprite_count++;

		/* OAM: size, msb data*/
		/* save post-oam table data for future retrieval*/
		DSP4.OAM_attr[DSP4.OAM_index] |= ((sp_x < 0 || sp_x > 255) << DSP4.OAM_bits);
		DSP4.OAM_bits++;

		DSP4.OAM_attr[DSP4.OAM_index] |= (size << DSP4.OAM_bits);
		DSP4.OAM_bits++;

		/* move to next byte in buffer*/
		if (DSP4.OAM_bits == 16)
		{
			DSP4.OAM_bits = 0;
			DSP4.OAM_index++;
		}
	}
	else
	if (stop)
		/* yield no OAM output*/
		DSP4_WRITE_WORD(0);
}

static void DSP4_OP09 (void)
{
	DSP4.waiting4command = FALSE;

	/* op flow control*/
	switch (DSP4.Logic)
	{
		case 1:
         goto resume1;
		case 2:
         goto resume2;
		case 3:
         goto resume3;
		case 4:
         goto resume4;
		case 5:
         goto resume5;
		case 6:
         goto resume6;
	}

	/* process initial inputs*/

	/* grab screen information*/
	DSP4.viewport_cx     = DSP4_READ_WORD();
	DSP4.viewport_cy     = DSP4_READ_WORD();
	DSP4_READ_WORD(); /* 0x0000*/
	DSP4.viewport_left   = DSP4_READ_WORD();
	DSP4.viewport_right  = DSP4_READ_WORD();
	DSP4.viewport_top    = DSP4_READ_WORD();
	DSP4.viewport_bottom = DSP4_READ_WORD();

	/* starting raster line below the horizon*/
	DSP4.poly_bottom[0][0] = DSP4.viewport_bottom - DSP4.viewport_cy;
	DSP4.poly_raster[0][0] = 0x100;

	do
	{
		/* check for new sprites*/

		DSP4.in_count = 4;
		DSP4_WAIT(1);

		resume1:

		/* raster overdraw check*/

		DSP4.raster = DSP4_READ_WORD();

		/* continue updating the raster line where overdraw begins*/
		if (DSP4.raster < DSP4.poly_raster[0][0])
		{
			DSP4.sprite_clipy = DSP4.viewport_bottom - (DSP4.poly_bottom[0][0] - DSP4.raster);
			DSP4.poly_raster[0][0] = DSP4.raster;
		}

		/* identify sprite*/

		/* op termination*/
		DSP4.distance = DSP4_READ_WORD();
		if (DSP4.distance == -0x8000)
			goto terminate;

		/* no sprite*/
		if (DSP4.distance == 0x0000)
			continue;

		/* process projection information*/

		/* vehicle sprite*/
		if ((uint16_t) DSP4.distance == 0x9000)
		{
			int16_t	car_left, car_right, car_back;
			int16_t	impact_left, impact_back;
			int16_t	world_spx, world_spy;
			int16_t	view_spx, view_spy;
			uint16_t	energy;

			/* we already have 4 bytes we want*/
			DSP4.in_count = 14;
			DSP4_WAIT(2);

			resume2:

			/* filter inputs*/
			energy        = DSP4_READ_WORD();
			impact_back   = DSP4_READ_WORD();
			car_back      = DSP4_READ_WORD();
			impact_left   = DSP4_READ_WORD();
			car_left      = DSP4_READ_WORD();
			DSP4.distance = DSP4_READ_WORD();
			car_right     = DSP4_READ_WORD();

			/* calculate car's world (x, y) values*/
			world_spx = car_right - car_left;
			world_spy = car_back;

			/* add in collision vector [needs bit-twiddling]*/
			world_spx -= energy * (impact_left - car_left) >> 16;
			world_spy -= energy * (car_back - impact_back) >> 16;

			/* perspective correction for world (x, y)*/
			view_spx = world_spx * DSP4.distance >> 15;
			view_spy = world_spy * DSP4.distance >> 15;

			/* convert to screen values*/
			DSP4.sprite_x = DSP4.viewport_cx + view_spx;
			DSP4.sprite_y = DSP4.viewport_bottom - (DSP4.poly_bottom[0][0] - view_spy);

			/* make the car's (x)-coordinate available*/
			DSP4_CLEAR_OUT();
			DSP4_WRITE_WORD(world_spx);

			/* grab a few remaining vehicle values*/
			DSP4.in_count = 4;
			DSP4_WAIT(3);

			resume3:

			/* add vertical lift factor*/
			DSP4.sprite_y += DSP4_READ_WORD();
		}
		/* terrain sprite*/
		else
		{
			int16_t	world_spx, world_spy;
			int16_t	view_spx, view_spy;

			/* we already have 4 bytes we want*/
			DSP4.in_count = 10;
			DSP4_WAIT(4);

			resume4:

			/* sort loop inputs*/
			DSP4.poly_cx[0][0]     = DSP4_READ_WORD();
			DSP4.poly_raster[0][1] = DSP4_READ_WORD();
			world_spx              = DSP4_READ_WORD();
			world_spy              = DSP4_READ_WORD();

			/* compute base raster line from the bottom*/
			DSP4.segments = DSP4.poly_bottom[0][0] - DSP4.raster;

			/* perspective correction for world (x, y)*/
			view_spx = world_spx * DSP4.distance >> 15;
			view_spy = world_spy * DSP4.distance >> 15;

			/* convert to screen values*/
			DSP4.sprite_x = DSP4.viewport_cx + view_spx - DSP4.poly_cx[0][0];
			DSP4.sprite_y = DSP4.viewport_bottom - DSP4.segments + view_spy;
		}

		/* default sprite size: 16x16*/
		DSP4.sprite_size = 1;
		DSP4.sprite_attr = DSP4_READ_WORD();

		/* convert tile data to SNES OAM format*/

		do
		{
			int16_t	sp_x, sp_y, sp_attr, sp_dattr;
			int16_t	sp_dx, sp_dy;
			int16_t	pixels;
			uint16_t	header;
			uint8_t	draw;

			DSP4.in_count = 2;
			DSP4_WAIT(5);

			resume5:

			draw = TRUE;

			/* opcode termination*/
			DSP4.raster = DSP4_READ_WORD();
			if (DSP4.raster == -0x8000)
				goto terminate;

			/* stop code*/
			if (DSP4.raster == 0x0000 && !DSP4.sprite_size)
				break;

			/* toggle sprite size*/
			if (DSP4.raster == 0x0000)
			{
				DSP4.sprite_size = !DSP4.sprite_size;
				continue;
			}

			/* check for valid sprite header*/
			header = DSP4.raster;
			header >>= 8;
			if (header != 0x20 &&
				header != 0x2e && /* This is for attractor sprite*/
				header != 0x40 &&
				header != 0x60 &&
				header != 0xa0 &&
				header != 0xc0 &&
				header != 0xe0)
				break;

			/* read in rest of sprite data*/
			DSP4.in_count = 4;
			DSP4_WAIT(6);

			resume6:

			draw = TRUE;

			/* process tile data*/

			/* sprite deltas*/
			sp_dattr = DSP4.raster;
			sp_dy = DSP4_READ_WORD();
			sp_dx = DSP4_READ_WORD();

			/* update coordinates to screen space*/
			sp_x = DSP4.sprite_x + sp_dx;
			sp_y = DSP4.sprite_y + sp_dy;

			/* update sprite nametable/attribute information*/
			sp_attr = DSP4.sprite_attr + sp_dattr;

			/* allow partially visibile tiles*/
			pixels = DSP4.sprite_size ? 15 : 7;

			DSP4_CLEAR_OUT();

			/* transparent tile to clip off parts of a sprite (overdraw)*/
			if (DSP4.sprite_clipy - pixels <= sp_y && sp_y <= DSP4.sprite_clipy && sp_x >= DSP4.viewport_left - pixels && sp_x <= DSP4.viewport_right && DSP4.sprite_clipy >= DSP4.viewport_top - pixels && DSP4.sprite_clipy <= DSP4.viewport_bottom)
				DSP4_OP0B(&draw, sp_x, DSP4.sprite_clipy, 0x00EE, DSP4.sprite_size, 0);

			/* normal sprite tile*/
			if (sp_x >= DSP4.viewport_left - pixels && sp_x <= DSP4.viewport_right && sp_y >= DSP4.viewport_top - pixels && sp_y <= DSP4.viewport_bottom && sp_y <= DSP4.sprite_clipy)
				DSP4_OP0B(&draw, sp_x, sp_y, sp_attr, DSP4.sprite_size, 0);

			/* no following OAM data*/
			DSP4_OP0B(&draw, 0, 0x0100, 0, 0, 1);
		}
		while (1);
	}
	while (1);

	terminate:
	DSP4.waiting4command = TRUE;
}

static void DSP4_OP0A (int16_t n2, int16_t *o1, int16_t *o2, int16_t *o3, int16_t *o4)
{
	static const uint16_t	OP0A_Values[16] =
	{
		0x0000, 0x0030, 0x0060, 0x0090, 0x00c0, 0x00f0, 0x0120, 0x0150,
		0xfe80, 0xfeb0, 0xfee0, 0xff10, 0xff40, 0xff70, 0xffa0, 0xffd0
	};

	*o4 = OP0A_Values[(n2 & 0x000f)];
	*o3 = OP0A_Values[(n2 & 0x00f0) >> 4];
	*o2 = OP0A_Values[(n2 & 0x0f00) >> 8];
	*o1 = OP0A_Values[(n2 & 0xf000) >> 12];
}


static void DSP4_OP0D (void)
{
	DSP4.waiting4command = FALSE;

	/* op flow control*/
	switch (DSP4.Logic)
	{
		case 1:
         goto resume1;
		case 2:
         goto resume2;
	}

	/* process initial inputs*/

	/* sort inputs*/
	DSP4.world_y           = DSP4_READ_DWORD();
	DSP4.poly_bottom[0][0] = DSP4_READ_WORD();
	DSP4.poly_top[0][0]    = DSP4_READ_WORD();
	DSP4.poly_cx[1][0]     = DSP4_READ_WORD();
	DSP4.viewport_bottom   = DSP4_READ_WORD();
	DSP4.world_x           = DSP4_READ_DWORD();
	DSP4.poly_cx[0][0]     = DSP4_READ_WORD();
	DSP4.poly_ptr[0][0]    = DSP4_READ_WORD();
	DSP4.world_yofs        = DSP4_READ_WORD();
	DSP4.world_dy          = DSP4_READ_DWORD();
	DSP4.world_dx          = DSP4_READ_DWORD();
	DSP4.distance          = DSP4_READ_WORD();
	DSP4_READ_WORD(); /* 0x0000*/
	DSP4.world_xenv        = SEX78(DSP4_READ_WORD());
	DSP4.world_ddy         = DSP4_READ_WORD();
	DSP4.world_ddx         = DSP4_READ_WORD();
	DSP4.view_yofsenv      = DSP4_READ_WORD();

	/* initial (x, y, offset) at starting raster line*/
	DSP4.view_x1    = (DSP4.world_x + DSP4.world_xenv) >> 16;
	DSP4.view_y1    = DSP4.world_y >> 16;
	DSP4.view_xofs1 = DSP4.world_x >> 16;
	DSP4.view_yofs1 = DSP4.world_yofs;

	/* first raster line*/
	DSP4.poly_raster[0][0] = DSP4.poly_bottom[0][0];

	do
	{
		/* process one iteration of projection*/

		/* perspective projection of world (x, y, scroll) points*/
		/* based on the current projection lines*/
		DSP4.view_x2    = (((DSP4.world_x + DSP4.world_xenv) >> 16) * DSP4.distance >> 15) + (DSP4.view_turnoff_x * DSP4.distance >> 15);
		DSP4.view_y2    = (DSP4.world_y >> 16) * DSP4.distance >> 15;
		DSP4.view_xofs2 = DSP4.view_x2;
		DSP4.view_yofs2 = (DSP4.world_yofs * DSP4.distance >> 15) + DSP4.poly_bottom[0][0] - DSP4.view_y2;

		/* 1. World x-location before transformation*/
		/* 2. Viewer x-position at the current*/
		/* 3. World y-location before perspective projection*/
		/* 4. Viewer y-position below the horizon*/
		/* 5. Number of raster lines drawn in this iteration*/
		DSP4_CLEAR_OUT();
		DSP4_WRITE_WORD((DSP4.world_x + DSP4.world_xenv) >> 16);
		DSP4_WRITE_WORD(DSP4.view_x2);
		DSP4_WRITE_WORD(DSP4.world_y >> 16);
		DSP4_WRITE_WORD(DSP4.view_y2);


		/* SR = 0x00*/

		/* determine # of raster lines used*/
		DSP4.segments = DSP4.view_y1 - DSP4.view_y2;

		/* prevent overdraw*/
		if (DSP4.view_y2 >= DSP4.poly_raster[0][0])
			DSP4.segments = 0;
		else
			DSP4.poly_raster[0][0] = DSP4.view_y2;

		/* don't draw outside the window*/
		if (DSP4.view_y2 < DSP4.poly_top[0][0])
		{
			DSP4.segments = 0;

			/* flush remaining raster lines*/
			if (DSP4.view_y1 >= DSP4.poly_top[0][0])
				DSP4.segments = DSP4.view_y1 - DSP4.poly_top[0][0];
		}

		/* SR = 0x80*/

		DSP4_WRITE_WORD(DSP4.segments);


		/* scan next command if no SR check needed*/
		if (DSP4.segments)
		{
			int32_t	px_dx, py_dy;
			int32_t	x_scroll, y_scroll;

			/* SR = 0x00*/

			/* linear interpolation (lerp) between projected points*/
			px_dx = (DSP4.view_xofs2 - DSP4.view_xofs1) * DSP4_Inverse(DSP4.segments) << 1;
			py_dy = (DSP4.view_yofs2 - DSP4.view_yofs1) * DSP4_Inverse(DSP4.segments) << 1;

			/* starting step values*/
			x_scroll = DSP_SEX16(DSP4.poly_cx[0][0] + DSP4.view_xofs1);
			y_scroll = DSP_SEX16(-DSP4.viewport_bottom + DSP4.view_yofs1 + DSP4.view_yofsenv + DSP4.poly_cx[1][0] - DSP4.world_yofs);

			/* SR = 0x80*/

			/* rasterize line*/
			for (DSP4.lcv = 0; DSP4.lcv < DSP4.segments; DSP4.lcv++)
			{
				/* 1. HDMA memory pointer (bg1)*/
				/* 2. vertical scroll offset ($210E)*/
				/* 3. horizontal scroll offset ($210D)*/
				DSP4_WRITE_WORD(DSP4.poly_ptr[0][0]);
				DSP4_WRITE_WORD((y_scroll + 0x8000) >> 16);
				DSP4_WRITE_WORD((x_scroll + 0x8000) >> 16);

				/* update memory address*/
				DSP4.poly_ptr[0][0] -= 4;

				/* update screen values*/
				x_scroll += px_dx;
				y_scroll += py_dy;
			}
		}

		/* Post-update*/

		/* update new viewer (x, y, scroll) to last raster line drawn*/
		DSP4.view_x1    = DSP4.view_x2;
		DSP4.view_y1    = DSP4.view_y2;
		DSP4.view_xofs1 = DSP4.view_xofs2;
		DSP4.view_yofs1 = DSP4.view_yofs2;

		/* add deltas for projection lines*/
		DSP4.world_dx += SEX78(DSP4.world_ddx);
		DSP4.world_dy += SEX78(DSP4.world_ddy);

		/* update projection lines*/
		DSP4.world_x += (DSP4.world_dx + DSP4.world_xenv);
		DSP4.world_y += DSP4.world_dy;

		/* command check*/

		/* scan next command*/
		DSP4.in_count = 2;
		DSP4_WAIT(1);

		resume1:

		/* inspect input*/
		DSP4.distance = DSP4_READ_WORD();

		/* terminate op*/
		if (DSP4.distance == -0x8000)
			break;

		/* already have 2 bytes in queue*/
		DSP4.in_count = 6;
		DSP4_WAIT(2);

		resume2:

		/* inspect inputs*/
		DSP4.world_ddy    = DSP4_READ_WORD();
		DSP4.world_ddx    = DSP4_READ_WORD();
		DSP4.view_yofsenv = DSP4_READ_WORD();

		/* no envelope here*/
		DSP4.world_xenv = 0;
	}
	while (1);

	DSP4.waiting4command = TRUE;
}

static void DSP4_OP0E (void)
{
	DSP4.OAM_RowMax = 16;
	memset(DSP4.OAM_Row, 0, 64);
}

static void DSP4_OP0F (void)
{
	DSP4.waiting4command = FALSE;

	/* op flow control*/
	switch (DSP4.Logic)
	{
		case 1:
         goto resume1;
		case 2:
         goto resume2;
		case 3:
         goto resume3;
		case 4:
         goto resume4;
	}

	/* process initial inputs*/

	/* sort inputs*/
	DSP4_READ_WORD(); /* 0x0000*/
	DSP4.world_y           = DSP4_READ_DWORD();
	DSP4.poly_bottom[0][0] = DSP4_READ_WORD();
	DSP4.poly_top[0][0]    = DSP4_READ_WORD();
	DSP4.poly_cx[1][0]     = DSP4_READ_WORD();
	DSP4.viewport_bottom   = DSP4_READ_WORD();
	DSP4.world_x           = DSP4_READ_DWORD();
	DSP4.poly_cx[0][0]     = DSP4_READ_WORD();
	DSP4.poly_ptr[0][0]    = DSP4_READ_WORD();
	DSP4.world_yofs        = DSP4_READ_WORD();
	DSP4.world_dy          = DSP4_READ_DWORD();
	DSP4.world_dx          = DSP4_READ_DWORD();
	DSP4.distance          = DSP4_READ_WORD();
	DSP4_READ_WORD(); /* 0x0000*/
	DSP4.world_xenv        = DSP4_READ_DWORD();
	DSP4.world_ddy         = DSP4_READ_WORD();
	DSP4.world_ddx         = DSP4_READ_WORD();
	DSP4.view_yofsenv      = DSP4_READ_WORD();

	/* initial (x, y, offset) at starting raster line*/
	DSP4.view_x1         = (DSP4.world_x + DSP4.world_xenv) >> 16;
	DSP4.view_y1         = DSP4.world_y >> 16;
	DSP4.view_xofs1      = DSP4.world_x >> 16;
	DSP4.view_yofs1      = DSP4.world_yofs;
	DSP4.view_turnoff_x  = 0;
	DSP4.view_turnoff_dx = 0;

	/* first raster line*/
	DSP4.poly_raster[0][0] = DSP4.poly_bottom[0][0];

	do
	{
		/* process one iteration of projection*/

		/* perspective projection of world (x, y, scroll) points*/
		/* based on the current projection lines*/
		DSP4.view_x2    = ((DSP4.world_x + DSP4.world_xenv) >> 16) * DSP4.distance >> 15;
		DSP4.view_y2    = (DSP4.world_y >> 16) * DSP4.distance >> 15;
		DSP4.view_xofs2 = DSP4.view_x2;
		DSP4.view_yofs2 = (DSP4.world_yofs * DSP4.distance >> 15) + DSP4.poly_bottom[0][0] - DSP4.view_y2;

		/* 1. World x-location before transformation*/
		/* 2. Viewer x-position at the next*/
		/* 3. World y-location before perspective projection*/
		/* 4. Viewer y-position below the horizon*/
		/* 5. Number of raster lines drawn in this iteration*/
		DSP4_CLEAR_OUT();
		DSP4_WRITE_WORD((DSP4.world_x + DSP4.world_xenv) >> 16);
		DSP4_WRITE_WORD(DSP4.view_x2);
		DSP4_WRITE_WORD(DSP4.world_y >> 16);
		DSP4_WRITE_WORD(DSP4.view_y2);


		/* SR = 0x00*/

		/* determine # of raster lines used*/
		DSP4.segments = DSP4.poly_raster[0][0] - DSP4.view_y2;

		/* prevent overdraw*/
		if (DSP4.view_y2 >= DSP4.poly_raster[0][0])
			DSP4.segments = 0;
		else
			DSP4.poly_raster[0][0] = DSP4.view_y2;

		/* don't draw outside the window*/
		if (DSP4.view_y2 < DSP4.poly_top[0][0])
		{
			DSP4.segments = 0;

			/* flush remaining raster lines*/
			if (DSP4.view_y1 >= DSP4.poly_top[0][0])
				DSP4.segments = DSP4.view_y1 - DSP4.poly_top[0][0];
		}

		/* SR = 0x80*/

		DSP4_WRITE_WORD(DSP4.segments);

		/* scan next command if no SR check needed*/
		if (DSP4.segments)
		{
			int32_t	px_dx, py_dy;
			int32_t	x_scroll, y_scroll;

			for (DSP4.lcv = 0; DSP4.lcv < 4; DSP4.lcv++)
			{
				/* grab inputs*/
				DSP4.in_count = 4;
				DSP4_WAIT(1);

				resume1:

				for (;;)
				{
					int16_t	dist;
					int16_t	color, red, green, blue;

					dist  = DSP4_READ_WORD();
					color = DSP4_READ_WORD();

					/* U1+B5+G5+R5*/
					red   =  color        & 0x1f;
					green = (color >>  5) & 0x1f;
					blue  = (color >> 10) & 0x1f;

					/* dynamic lighting*/
					red   = (red   * dist >> 15) & 0x1f;
					green = (green * dist >> 15) & 0x1f;
					blue  = (blue  * dist >> 15) & 0x1f;
					color = red | (green << 5) | (blue << 10);

					DSP4_CLEAR_OUT();
					DSP4_WRITE_WORD(color);

					break;
				}
			}

			/* SR = 0x00*/

			/* linear interpolation (lerp) between projected points*/
			px_dx = (DSP4.view_xofs2 - DSP4.view_xofs1) * DSP4_Inverse(DSP4.segments) << 1;
			py_dy = (DSP4.view_yofs2 - DSP4.view_yofs1) * DSP4_Inverse(DSP4.segments) << 1;

			/* starting step values*/
			x_scroll = DSP_SEX16(DSP4.poly_cx[0][0] + DSP4.view_xofs1);
			y_scroll = DSP_SEX16(-DSP4.viewport_bottom + DSP4.view_yofs1 + DSP4.view_yofsenv + DSP4.poly_cx[1][0] - DSP4.world_yofs);

			/* SR = 0x80*/

			/* rasterize line*/
			for (DSP4.lcv = 0; DSP4.lcv < DSP4.segments; DSP4.lcv++)
			{
				/* 1. HDMA memory pointer*/
				/* 2. vertical scroll offset ($210E)*/
				/* 3. horizontal scroll offset ($210D)*/
				DSP4_WRITE_WORD(DSP4.poly_ptr[0][0]);
				DSP4_WRITE_WORD((y_scroll + 0x8000) >> 16);
				DSP4_WRITE_WORD((x_scroll + 0x8000) >> 16);

				/* update memory address*/
				DSP4.poly_ptr[0][0] -= 4;

				/* update screen values*/
				x_scroll += px_dx;
				y_scroll += py_dy;
			}
		}

		/* Post-update*/

		/* update new viewer (x, y, scroll) to last raster line drawn*/
		DSP4.view_x1    = DSP4.view_x2;
		DSP4.view_y1    = DSP4.view_y2;
		DSP4.view_xofs1 = DSP4.view_xofs2;
		DSP4.view_yofs1 = DSP4.view_yofs2;

		/* add deltas for projection lines*/
		DSP4.world_dx += SEX78(DSP4.world_ddx);
		DSP4.world_dy += SEX78(DSP4.world_ddy);

		/* update projection lines*/
		DSP4.world_x += (DSP4.world_dx + DSP4.world_xenv);
		DSP4.world_y += DSP4.world_dy;

		/* update road turnoff position*/
		DSP4.view_turnoff_x += DSP4.view_turnoff_dx;

		/* command check*/

		/* scan next command*/
		DSP4.in_count = 2;
		DSP4_WAIT(2);

		resume2:

		/* check for termination*/
		DSP4.distance = DSP4_READ_WORD();
		if (DSP4.distance == -0x8000)
			break;

		/* road splice*/
		if ((uint16_t) DSP4.distance == 0x8001)
		{
			DSP4.in_count = 6;
			DSP4_WAIT(3);

			resume3:

			DSP4.distance        = DSP4_READ_WORD();
			DSP4.view_turnoff_x  = DSP4_READ_WORD();
			DSP4.view_turnoff_dx = DSP4_READ_WORD();

			/* factor in new changes*/
			DSP4.view_x1    += (DSP4.view_turnoff_x * DSP4.distance >> 15);
			DSP4.view_xofs1 += (DSP4.view_turnoff_x * DSP4.distance >> 15);

			/* update stepping values*/
			DSP4.view_turnoff_x += DSP4.view_turnoff_dx;

			DSP4.in_count = 2;
			DSP4_WAIT(2);
		}

		/* already have 2 bytes in queue*/
		DSP4.in_count = 6;
		DSP4_WAIT(4);

		resume4:

		/* inspect inputs*/
		DSP4.world_ddy    = DSP4_READ_WORD();
		DSP4.world_ddx    = DSP4_READ_WORD();
		DSP4.view_yofsenv = DSP4_READ_WORD();

		/* no envelope here*/
		DSP4.world_xenv = 0;
	}
	while (1);

	/* terminate op*/
	DSP4.waiting4command = TRUE;
}

static void DSP4_OP10 (void)
{
	DSP4.waiting4command = FALSE;

	/* op flow control*/
	switch (DSP4.Logic)
	{
		case 1:
         goto resume1;
		case 2:
         goto resume2;
		case 3:
         goto resume3;
	}

	/* sort inputs*/

	DSP4_READ_WORD(); /* 0x0000*/
	DSP4.world_y           = DSP4_READ_DWORD();
	DSP4.poly_bottom[0][0] = DSP4_READ_WORD();
	DSP4.poly_top[0][0]    = DSP4_READ_WORD();
	DSP4.poly_cx[1][0]     = DSP4_READ_WORD();
	DSP4.viewport_bottom   = DSP4_READ_WORD();
	DSP4.world_x           = DSP4_READ_DWORD();
	DSP4.poly_cx[0][0]     = DSP4_READ_WORD();
	DSP4.poly_ptr[0][0]    = DSP4_READ_WORD();
	DSP4.world_yofs        = DSP4_READ_WORD();
	DSP4.distance          = DSP4_READ_WORD();
	DSP4.view_y2           = DSP4_READ_WORD();
	DSP4.view_dy           = DSP4_READ_WORD() * DSP4.distance >> 15;
	DSP4.view_x2           = DSP4_READ_WORD();
	DSP4.view_dx           = DSP4_READ_WORD() * DSP4.distance >> 15;
	DSP4.view_yofsenv      = DSP4_READ_WORD();

	/* initial (x, y, offset) at starting raster line*/
	DSP4.view_x1    = DSP4.world_x >> 16;
	DSP4.view_y1    = DSP4.world_y >> 16;
	DSP4.view_xofs1 = DSP4.view_x1;
	DSP4.view_yofs1 = DSP4.world_yofs;

	/* first raster line*/
	DSP4.poly_raster[0][0] = DSP4.poly_bottom[0][0];

	do
	{
		/* process one iteration of projection*/

		/* add shaping*/
		DSP4.view_x2 += DSP4.view_dx;
		DSP4.view_y2 += DSP4.view_dy;

		/* vertical scroll calculation*/
		DSP4.view_xofs2 = DSP4.view_x2;
		DSP4.view_yofs2 = (DSP4.world_yofs * DSP4.distance >> 15) + DSP4.poly_bottom[0][0] - DSP4.view_y2;

		/* 1. Viewer x-position at the next*/
		/* 2. Viewer y-position below the horizon*/
		/* 3. Number of raster lines drawn in this iteration*/
		DSP4_CLEAR_OUT();
		DSP4_WRITE_WORD(DSP4.view_x2);
		DSP4_WRITE_WORD(DSP4.view_y2);

		/* SR = 0x00*/

		/* determine # of raster lines used*/
		DSP4.segments = DSP4.view_y1 - DSP4.view_y2;

		/* prevent overdraw*/
		if (DSP4.view_y2 >= DSP4.poly_raster[0][0])
			DSP4.segments = 0;
		else
			DSP4.poly_raster[0][0] = DSP4.view_y2;

		/* don't draw outside the window*/
		if (DSP4.view_y2 < DSP4.poly_top[0][0])
		{
			DSP4.segments = 0;

			/* flush remaining raster lines*/
			if (DSP4.view_y1 >= DSP4.poly_top[0][0])
				DSP4.segments = DSP4.view_y1 - DSP4.poly_top[0][0];
		}

		/* SR = 0x80*/

		DSP4_WRITE_WORD(DSP4.segments);

		/* scan next command if no SR check needed*/
		if (DSP4.segments)
		{
			for (DSP4.lcv = 0; DSP4.lcv < 4; DSP4.lcv++)
			{
				/* grab inputs*/
				DSP4.in_count = 4;
				DSP4_WAIT(1);

				resume1:

				for (;;)
				{
					int16_t	dist;
					int16_t	color, red, green, blue;

					dist  = DSP4_READ_WORD();
					color = DSP4_READ_WORD();

					/* U1+B5+G5+R5*/
					red   =  color        & 0x1f;
					green = (color >>  5) & 0x1f;
					blue  = (color >> 10) & 0x1f;

					/* dynamic lighting*/
					red   = (red   * dist >> 15) & 0x1f;
					green = (green * dist >> 15) & 0x1f;
					blue  = (blue  * dist >> 15) & 0x1f;
					color = red | (green << 5) | (blue << 10);

					DSP4_CLEAR_OUT();
					DSP4_WRITE_WORD(color);

					break;
				}
			}
		}

		/* scan next command if no SR check needed*/
		if (DSP4.segments)
		{
			int32_t	px_dx, py_dy;
			int32_t	x_scroll, y_scroll;

			/* SR = 0x00*/

			/* linear interpolation (lerp) between projected points*/
			px_dx = (DSP4.view_xofs2 - DSP4.view_xofs1) * DSP4_Inverse(DSP4.segments) << 1;
			py_dy = (DSP4.view_yofs2 - DSP4.view_yofs1) * DSP4_Inverse(DSP4.segments) << 1;

			/* starting step values*/
			x_scroll = DSP_SEX16(DSP4.poly_cx[0][0] + DSP4.view_xofs1);
			y_scroll = DSP_SEX16(-DSP4.viewport_bottom + DSP4.view_yofs1 + DSP4.view_yofsenv + DSP4.poly_cx[1][0] - DSP4.world_yofs);

			/* SR = 0x80*/

			/* rasterize line*/
			for (DSP4.lcv = 0; DSP4.lcv < DSP4.segments; DSP4.lcv++)
			{
				/* 1. HDMA memory pointer (bg2)*/
				/* 2. vertical scroll offset ($2110)*/
				/* 3. horizontal scroll offset ($210F)*/
				DSP4_WRITE_WORD(DSP4.poly_ptr[0][0]);
				DSP4_WRITE_WORD((y_scroll + 0x8000) >> 16);
				DSP4_WRITE_WORD((x_scroll + 0x8000) >> 16);

				/* update memory address*/
				DSP4.poly_ptr[0][0] -= 4;

				/* update screen values*/
				x_scroll += px_dx;
				y_scroll += py_dy;
			}
		}

		/* Post-update*/

		/* update new viewer (x, y, scroll) to last raster line drawn*/
		DSP4.view_x1    = DSP4.view_x2;
		DSP4.view_y1    = DSP4.view_y2;
		DSP4.view_xofs1 = DSP4.view_xofs2;
		DSP4.view_yofs1 = DSP4.view_yofs2;

		/* command check*/

		/* scan next command*/
		DSP4.in_count = 2;
		DSP4_WAIT(2);

		resume2:

		/* check for opcode termination*/
		DSP4.distance = DSP4_READ_WORD();
		if (DSP4.distance == -0x8000)
			break;

		/* already have 2 bytes in queue*/
		DSP4.in_count = 10;
		DSP4_WAIT(3);

		resume3:

		/* inspect inputs*/
		DSP4.view_y2 = DSP4_READ_WORD();
		DSP4.view_dy = DSP4_READ_WORD() * DSP4.distance >> 15;
		DSP4.view_x2 = DSP4_READ_WORD();
		DSP4.view_dx = DSP4_READ_WORD() * DSP4.distance >> 15;
	}
	while (1);

	DSP4.waiting4command = TRUE;
}

static void DSP4_OP11 (int16_t A, int16_t B, int16_t C, int16_t D, int16_t *M)
{
	/* 0x155 = 341 = Horizontal Width of the Screen*/
	*M = ((A * 0x0155 >> 2) & 0xf000) | ((B * 0x0155 >> 6) & 0x0f00) | ((C * 0x0155 >> 10) & 0x00f0) | ((D * 0x0155 >> 14) & 0x000f);
}

static void DSP4_SetByte (void)
{
	/* clear pending read*/
	if (DSP4.out_index < DSP4.out_count)
	{
		DSP4.out_index++;
		return;
	}

	if (DSP4.waiting4command)
	{
		if (DSP4.half_command)
		{
			DSP4.command |= (DSP4.byte << 8);
			DSP4.in_index        = 0;
			DSP4.waiting4command = FALSE;
			DSP4.half_command    = FALSE;
			DSP4.out_count       = 0;
			DSP4.out_index       = 0;

			DSP4.Logic = 0;

			switch (DSP4.command)
			{
				case 0x0000: DSP4.in_count =  4; break;
				case 0x0001: DSP4.in_count = 44; break;
				case 0x0003: DSP4.in_count =  0; break;
				case 0x0005: DSP4.in_count =  0; break;
				case 0x0006: DSP4.in_count =  0; break;
				case 0x0007: DSP4.in_count = 34; break;
				case 0x0008: DSP4.in_count = 90; break;
				case 0x0009: DSP4.in_count = 14; break;
				case 0x000a: DSP4.in_count =  6; break;
				case 0x000b: DSP4.in_count =  6; break;
				case 0x000d: DSP4.in_count = 42; break;
				case 0x000e: DSP4.in_count =  0; break;
				case 0x000f: DSP4.in_count = 46; break;
				case 0x0010: DSP4.in_count = 36; break;
				case 0x0011: DSP4.in_count =  8; break;
				default:
					DSP4.waiting4command = TRUE;
					break;
			}
		}
		else
		{
			DSP4.command = DSP4.byte;
			DSP4.half_command = TRUE;
		}
	}
	else
	{
		DSP4.parameters[DSP4.in_index] = DSP4.byte;
		DSP4.in_index++;
	}

	if (!DSP4.waiting4command && DSP4.in_count == DSP4.in_index)
	{
		/* Actually execute the command*/
		DSP4.waiting4command = TRUE;
		DSP4.out_index       = 0;
		DSP4.in_index        = 0;

		switch (DSP4.command)
		{
			/* 16-bit multiplication*/
			case 0x0000:
			{
				int16_t	multiplier, multiplicand;
				int32_t	product;

				multiplier   = DSP4_READ_WORD();
				multiplicand = DSP4_READ_WORD();

				DSP4_Multiply(multiplicand, multiplier, &product);

				DSP4_CLEAR_OUT();
				DSP4_WRITE_WORD(product);
				DSP4_WRITE_WORD(product >> 16);

				break;
			}

			/* single-player track projection*/
			case 0x0001:
				DSP4_OP01();
				break;

			/* single-player selection*/
			case 0x0003:
				DSP4_OP03();
				break;

			/* clear OAM*/
			case 0x0005:
				DSP4_OP05();
				break;

			/* transfer OAM*/
			case 0x0006:
				DSP4_OP06();
				break;

			/* single-player track turnoff projection*/
			case 0x0007:
				DSP4_OP07();
				break;

			/* solid polygon projection*/
			case 0x0008:
				DSP4_OP08();
				break;

			/* sprite projection*/
			case 0x0009:
				DSP4_OP09();
				break;

			/* unknown*/
			case 0x000A:
			{
				int16_t in2a, out1a, out2a, out3a, out4a;

				DSP4_READ_WORD();
				in2a = DSP4_READ_WORD();
				DSP4_READ_WORD();

				DSP4_OP0A(in2a, &out2a, &out1a, &out4a, &out3a);

				DSP4_CLEAR_OUT();
				DSP4_WRITE_WORD(out1a);
				DSP4_WRITE_WORD(out2a);
				DSP4_WRITE_WORD(out3a);
				DSP4_WRITE_WORD(out4a);

				break;
			}

			/* set OAM*/
			case 0x000B:
			{
				int16_t	sp_x    = DSP4_READ_WORD();
				int16_t	sp_y    = DSP4_READ_WORD();
				int16_t	sp_attr = DSP4_READ_WORD();
				uint8_t	draw = TRUE;

				DSP4_CLEAR_OUT();
				DSP4_OP0B(&draw, sp_x, sp_y, sp_attr, 0, 1);

				break;
			}

			/* multi-player track projection*/
			case 0x000D:
				DSP4_OP0D();
				break;

			/* multi-player selection*/
			case 0x000E:
				DSP4_OP0E();
				break;

			/* single-player track projection with lighting*/
			case 0x000F:
				DSP4_OP0F();
				break;

			/* single-player track turnoff projection with lighting*/
			case 0x0010:
				DSP4_OP10();
				break;

			/* unknown: horizontal mapping command*/
			case 0x0011:
			{
				int16_t	a, b, c, d, m;

				d = DSP4_READ_WORD();
				c = DSP4_READ_WORD();
				b = DSP4_READ_WORD();
				a = DSP4_READ_WORD();

				DSP4_OP11(a, b, c, d, &m);

				DSP4_CLEAR_OUT();
				DSP4_WRITE_WORD(m);

				break;
			}

			default:
				break;
		}
	}
}

static void DSP4_GetByte (void)
{
	if (DSP4.out_count)
	{
		DSP4.byte = (uint8_t) DSP4.output[DSP4.out_index & 0x1FF];

		DSP4.out_index++;
		if (DSP4.out_count == DSP4.out_index)
			DSP4.out_count = 0;
	}
	else
		DSP4.byte = 0xff;
}

void DSP4SetByte (uint8_t byte, uint16_t address)
{
	if (address < DSP0.boundary)
	{
		DSP4.byte    = byte;
		DSP4.address = address;
		DSP4_SetByte();
	}
}

uint8_t DSP4GetByte (uint16_t address)
{
	if (address < DSP0.boundary)
	{
		DSP4.address = address;
		DSP4_GetByte();
		return (DSP4.byte);
	}

	return (0x80);
}
