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snes9xgx/source/snes9x/seta010.cpp

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/**********************************************************************************
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
(c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and
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 Brad Jorsch (anomie@users.sourceforge.net),
funkyass (funkyass@spam.shaw.ca),
Kris Bleakley (codeviolation@hotmail.com),
Nach (n-a-c-h@users.sourceforge.net), and
zones (kasumitokoduck@yahoo.com)
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
(c) Copyright 2002 Matthew Kendora with research by
zsKnight,
John Weidman,
Dark Force
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 DSP emulator code is derived from SNEeSe and OpenSPC:
(c) Copyright 1998 - 2003 Brad Martin
(c) Copyright 1998 - 2006 Charles Bilyue'
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 filter
(c) Copyright 2003 Maxim Stepin (maxim@hiend3d.com)
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 "seta.h"
#include "memmap.h"
// Mode 7 scaling constants for all raster lines
const int16 ST010_M7Scale[176] = {
0x0380, 0x0325, 0x02da, 0x029c, 0x0268, 0x023b, 0x0215, 0x01f3,
0x01d5, 0x01bb, 0x01a3, 0x018e, 0x017b, 0x016a, 0x015a, 0x014b,
0x013e, 0x0132, 0x0126, 0x011c, 0x0112, 0x0109, 0x0100, 0x00f8,
0x00f0, 0x00e9, 0x00e3, 0x00dc, 0x00d6, 0x00d1, 0x00cb, 0x00c6,
0x00c1, 0x00bd, 0x00b8, 0x00b4, 0x00b0, 0x00ac, 0x00a8, 0x00a5,
0x00a2, 0x009e, 0x009b, 0x0098, 0x0095, 0x0093, 0x0090, 0x008d,
0x008b, 0x0088, 0x0086, 0x0084, 0x0082, 0x0080, 0x007e, 0x007c,
0x007a, 0x0078, 0x0076, 0x0074, 0x0073, 0x0071, 0x006f, 0x006e,
0x006c, 0x006b, 0x0069, 0x0068, 0x0067, 0x0065, 0x0064, 0x0063,
0x0062, 0x0060, 0x005f, 0x005e, 0x005d, 0x005c, 0x005b, 0x005a,
0x0059, 0x0058, 0x0057, 0x0056, 0x0055, 0x0054, 0x0053, 0x0052,
0x0051, 0x0051, 0x0050, 0x004f, 0x004e, 0x004d, 0x004d, 0x004c,
0x004b, 0x004b, 0x004a, 0x0049, 0x0048, 0x0048, 0x0047, 0x0047,
0x0046, 0x0045, 0x0045, 0x0044, 0x0044, 0x0043, 0x0042, 0x0042,
0x0041, 0x0041, 0x0040, 0x0040, 0x003f, 0x003f, 0x003e, 0x003e,
0x003d, 0x003d, 0x003c, 0x003c, 0x003b, 0x003b, 0x003a, 0x003a,
0x003a, 0x0039, 0x0039, 0x0038, 0x0038, 0x0038, 0x0037, 0x0037,
0x0036, 0x0036, 0x0036, 0x0035, 0x0035, 0x0035, 0x0034, 0x0034,
0x0034, 0x0033, 0x0033, 0x0033, 0x0032, 0x0032, 0x0032, 0x0031,
0x0031, 0x0031, 0x0030, 0x0030, 0x0030, 0x0030, 0x002f, 0x002f,
0x002f, 0x002e, 0x002e, 0x002e, 0x002e, 0x002d, 0x002d, 0x002d,
0x002d, 0x002c, 0x002c, 0x002c, 0x002c, 0x002b, 0x002b, 0x002b
};
// H-DMA hack
bool seta_hack;
//temporary Op04 requirement
#include <math.h>
#ifndef PI
#define PI 3.1415926535897932384626433832795
#endif
ST010_Regs ST010;
uint8 S9xGetST010(uint32 Address)
{
if(!(Address&0x80000))
return 0x80;
if((Address&0xFFF)==0x20)
return ST010.op_reg;
if ((Address&0xFFF)==0x21)
return ST010.execute;
return Memory.SRAM[Address&Memory.SRAMMask];
}
const int16 ST010_SinTable[256] = {
0x0000, 0x0324, 0x0648, 0x096a, 0x0c8c, 0x0fab, 0x12c8, 0x15e2,
0x18f9, 0x1c0b, 0x1f1a, 0x2223, 0x2528, 0x2826, 0x2b1f, 0x2e11,
0x30fb, 0x33df, 0x36ba, 0x398c, 0x3c56, 0x3f17, 0x41ce, 0x447a,
0x471c, 0x49b4, 0x4c3f, 0x4ebf, 0x5133, 0x539b, 0x55f5, 0x5842,
0x5a82, 0x5cb3, 0x5ed7, 0x60eb, 0x62f1, 0x64e8, 0x66cf, 0x68a6,
0x6a6d, 0x6c23, 0x6dc9, 0x6f5e, 0x70e2, 0x7254, 0x73b5, 0x7504,
0x7641, 0x776b, 0x7884, 0x7989, 0x7a7c, 0x7b5c, 0x7c29, 0x7ce3,
0x7d89, 0x7e1d, 0x7e9c, 0x7f09, 0x7f61, 0x7fa6, 0x7fd8, 0x7ff5,
0x7fff, 0x7ff5, 0x7fd8, 0x7fa6, 0x7f61, 0x7f09, 0x7e9c, 0x7e1d,
0x7d89, 0x7ce3, 0x7c29, 0x7b5c, 0x7a7c, 0x7989, 0x7884, 0x776b,
0x7641, 0x7504, 0x73b5, 0x7254, 0x70e2, 0x6f5e, 0x6dc9, 0x6c23,
0x6a6d, 0x68a6, 0x66cf, 0x64e8, 0x62f1, 0x60eb, 0x5ed7, 0x5cb3,
0x5a82, 0x5842, 0x55f5, 0x539b, 0x5133, 0x4ebf, 0x4c3f, 0x49b4,
0x471c, 0x447a, 0x41ce, 0x3f17, 0x3c56, 0x398c, 0x36ba, 0x33df,
0x30fb, 0x2e11, 0x2b1f, 0x2826, 0x2528, 0x2223, 0x1f1a, 0x1c0b,
0x18f8, 0x15e2, 0x12c8, 0x0fab, 0x0c8c, 0x096a, 0x0648, 0x0324,
0x0000, -0x0324, -0x0648, -0x096b, -0x0c8c, -0x0fab, -0x12c8, -0x15e2,
-0x18f9, -0x1c0b, -0x1f1a, -0x2223, -0x2528, -0x2826, -0x2b1f, -0x2e11,
-0x30fb, -0x33df, -0x36ba, -0x398d, -0x3c56, -0x3f17, -0x41ce, -0x447a,
-0x471c, -0x49b4, -0x4c3f, -0x4ebf, -0x5133, -0x539b, -0x55f5, -0x5842,
-0x5a82, -0x5cb3, -0x5ed7, -0x60ec, -0x62f1, -0x64e8, -0x66cf, -0x68a6,
-0x6a6d, -0x6c23, -0x6dc9, -0x6f5e, -0x70e2, -0x7254, -0x73b5, -0x7504,
-0x7641, -0x776b, -0x7884, -0x7989, -0x7a7c, -0x7b5c, -0x7c29, -0x7ce3,
-0x7d89, -0x7e1d, -0x7e9c, -0x7f09, -0x7f61, -0x7fa6, -0x7fd8, -0x7ff5,
-0x7fff, -0x7ff5, -0x7fd8, -0x7fa6, -0x7f61, -0x7f09, -0x7e9c, -0x7e1d,
-0x7d89, -0x7ce3, -0x7c29, -0x7b5c, -0x7a7c, -0x7989, -0x7883, -0x776b,
-0x7641, -0x7504, -0x73b5, -0x7254, -0x70e2, -0x6f5e, -0x6dc9, -0x6c23,
-0x6a6d, -0x68a6, -0x66cf, -0x64e8, -0x62f1, -0x60eb, -0x5ed7, -0x5cb3,
-0x5a82, -0x5842, -0x55f5, -0x539a, -0x5133, -0x4ebf, -0x4c3f, -0x49b3,
-0x471c, -0x447a, -0x41cd, -0x3f17, -0x3c56, -0x398c, -0x36b9, -0x33de,
-0x30fb, -0x2e10, -0x2b1f, -0x2826, -0x2527, -0x2223, -0x1f19, -0x1c0b,
-0x18f8, -0x15e2, -0x12c8, -0x0fab, -0x0c8b, -0x096a, -0x0647, -0x0324};
const unsigned char ST010_ArcTan[32][32] = {
{ 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80},
{ 0x80, 0xa0, 0xad, 0xb3, 0xb6, 0xb8, 0xb9, 0xba, 0xbb, 0xbb, 0xbc, 0xbc, 0xbd, 0xbd, 0xbd, 0xbd,
0xbd, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbe, 0xbf, 0xbf, 0xbf, 0xbf},
{ 0x80, 0x93, 0xa0, 0xa8, 0xad, 0xb0, 0xb3, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xb9, 0xba, 0xba, 0xbb,
0xbb, 0xbb, 0xbb, 0xbc, 0xbc, 0xbc, 0xbc, 0xbc, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd, 0xbd},
{ 0x80, 0x8d, 0x98, 0xa0, 0xa6, 0xaa, 0xad, 0xb0, 0xb1, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb7, 0xb8,
0xb8, 0xb9, 0xb9, 0xba, 0xba, 0xba, 0xba, 0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0xbc, 0xbc, 0xbc, 0xbc},
{ 0x80, 0x8a, 0x93, 0x9a, 0xa0, 0xa5, 0xa8, 0xab, 0xad, 0xaf, 0xb0, 0xb2, 0xb3, 0xb4, 0xb5, 0xb5,
0xb6, 0xb7, 0xb7, 0xb8, 0xb8, 0xb8, 0xb9, 0xb9, 0xb9, 0xba, 0xba, 0xba, 0xba, 0xba, 0xbb, 0xbb},
{ 0x80, 0x88, 0x90, 0x96, 0x9b, 0xa0, 0xa4, 0xa7, 0xa9, 0xab, 0xad, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3,
0xb4, 0xb4, 0xb5, 0xb6, 0xb6, 0xb6, 0xb7, 0xb7, 0xb8, 0xb8, 0xb8, 0xb9, 0xb9, 0xb9, 0xb9, 0xb9},
{ 0x80, 0x87, 0x8d, 0x93, 0x98, 0x9c, 0xa0, 0xa3, 0xa6, 0xa8, 0xaa, 0xac, 0xad, 0xae, 0xb0, 0xb0,
0xb1, 0xb2, 0xb3, 0xb4, 0xb4, 0xb5, 0xb5, 0xb6, 0xb6, 0xb6, 0xb7, 0xb7, 0xb7, 0xb8, 0xb8, 0xb8},
{ 0x80, 0x86, 0x8b, 0x90, 0x95, 0x99, 0x9d, 0xa0, 0xa3, 0xa5, 0xa7, 0xa9, 0xaa, 0xac, 0xad, 0xae,
0xaf, 0xb0, 0xb1, 0xb2, 0xb2, 0xb3, 0xb3, 0xb4, 0xb4, 0xb5, 0xb5, 0xb6, 0xb6, 0xb6, 0xb7, 0xb7},
{ 0x80, 0x85, 0x8a, 0x8f, 0x93, 0x97, 0x9a, 0x9d, 0xa0, 0xa2, 0xa5, 0xa6, 0xa8, 0xaa, 0xab, 0xac,
0xad, 0xae, 0xaf, 0xb0, 0xb0, 0xb1, 0xb2, 0xb2, 0xb3, 0xb3, 0xb4, 0xb4, 0xb5, 0xb5, 0xb5, 0xb5},
{ 0x80, 0x85, 0x89, 0x8d, 0x91, 0x95, 0x98, 0x9b, 0x9e, 0xa0, 0xa0, 0xa4, 0xa6, 0xa7, 0xa9, 0xaa,
0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb0, 0xb1, 0xb1, 0xb2, 0xb2, 0xb3, 0xb3, 0xb4, 0xb4, 0xb4},
{ 0x80, 0x84, 0x88, 0x8c, 0x90, 0x93, 0x96, 0x99, 0x9b, 0x9e, 0xa0, 0xa2, 0xa4, 0xa5, 0xa7, 0xa8,
0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xaf, 0xb0, 0xb0, 0xb1, 0xb2, 0xb2, 0xb2, 0xb3, 0xb3},
{ 0x80, 0x84, 0x87, 0x8b, 0x8e, 0x91, 0x94, 0x97, 0x9a, 0x9c, 0x9e, 0xa0, 0xa2, 0xa3, 0xa5, 0xa6,
0xa7, 0xa9, 0xaa, 0xab, 0xac, 0xac, 0xad, 0xae, 0xae, 0xaf, 0xb0, 0xb0, 0xb1, 0xb1, 0xb2, 0xb2},
{ 0x80, 0x83, 0x87, 0x8a, 0x8d, 0x90, 0x93, 0x96, 0x98, 0x9a, 0x9c, 0x9e, 0xa0, 0xa2, 0xa3, 0xa5,
0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xac, 0xad, 0xae, 0xae, 0xaf, 0xb0, 0xb0, 0xb0, 0xb1},
{ 0x80, 0x83, 0x86, 0x89, 0x8c, 0x8f, 0x92, 0x94, 0x96, 0x99, 0x9b, 0x9d, 0x9e, 0xa0, 0xa2, 0xa3,
0xa4, 0xa5, 0xa7, 0xa8, 0xa9, 0xa9, 0xaa, 0xab, 0xac, 0xac, 0xad, 0xae, 0xae, 0xaf, 0xaf, 0xb0},
{ 0x80, 0x83, 0x86, 0x89, 0x8b, 0x8e, 0x90, 0x93, 0x95, 0x97, 0x99, 0x9b, 0x9d, 0x9e, 0xa0, 0xa1,
0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xaa, 0xab, 0xac, 0xad, 0xad, 0xae, 0xae, 0xaf},
{ 0x80, 0x83, 0x85, 0x88, 0x8b, 0x8d, 0x90, 0x92, 0x94, 0x96, 0x98, 0x9a, 0x9b, 0x9d, 0x9f, 0xa0,
0xa1, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa8, 0xa9, 0xaa, 0xab, 0xab, 0xac, 0xad, 0xad, 0xae},
{ 0x80, 0x83, 0x85, 0x88, 0x8a, 0x8c, 0x8f, 0x91, 0x93, 0x95, 0x97, 0x99, 0x9a, 0x9c, 0x9d, 0x9f,
0xa0, 0xa1, 0xa2, 0xa3, 0xa5, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xaa, 0xab, 0xab, 0xac, 0xad},
{ 0x80, 0x82, 0x85, 0x87, 0x89, 0x8c, 0x8e, 0x90, 0x92, 0x94, 0x96, 0x97, 0x99, 0x9b, 0x9c, 0x9d,
0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa8, 0xa9, 0xaa, 0xaa, 0xab, 0xac},
{ 0x80, 0x82, 0x85, 0x87, 0x89, 0x8b, 0x8d, 0x8f, 0x91, 0x93, 0x95, 0x96, 0x98, 0x99, 0x9b, 0x9c,
0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa7, 0xa8, 0xa9, 0xa9, 0xaa, 0xab},
{ 0x80, 0x82, 0x84, 0x86, 0x88, 0x8a, 0x8c, 0x8e, 0x90, 0x92, 0x94, 0x95, 0x97, 0x98, 0x9a, 0x9b,
0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa6, 0xa7, 0xa8, 0xa8, 0xa9, 0xaa},
{ 0x80, 0x82, 0x84, 0x86, 0x88, 0x8a, 0x8c, 0x8e, 0x90, 0x91, 0x93, 0x94, 0x96, 0x97, 0x99, 0x9a,
0x9b, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa5, 0xa6, 0xa7, 0xa7, 0xa8, 0xa9},
{ 0x80, 0x82, 0x84, 0x86, 0x88, 0x8a, 0x8b, 0x8d, 0x8f, 0x90, 0x92, 0x94, 0x95, 0x97, 0x98, 0x99,
0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa4, 0xa5, 0xa6, 0xa6, 0xa7, 0xa8},
{ 0x80, 0x82, 0x84, 0x86, 0x87, 0x89, 0x8b, 0x8d, 0x8e, 0x90, 0x91, 0x93, 0x94, 0x96, 0x97, 0x98,
0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa3, 0xa4, 0xa5, 0xa6, 0xa6, 0xa7},
{ 0x80, 0x82, 0x84, 0x85, 0x87, 0x89, 0x8a, 0x8c, 0x8e, 0x8f, 0x91, 0x92, 0x94, 0x95, 0x96, 0x98,
0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa2, 0xa3, 0xa4, 0xa5, 0xa5, 0xa6},
{ 0x80, 0x82, 0x83, 0x85, 0x87, 0x88, 0x8a, 0x8c, 0x8d, 0x8f, 0x90, 0x92, 0x93, 0x94, 0x96, 0x97,
0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa2, 0xa3, 0xa4, 0xa5, 0xa5},
{ 0x80, 0x82, 0x83, 0x85, 0x86, 0x88, 0x8a, 0x8b, 0x8d, 0x8e, 0x90, 0x91, 0x92, 0x94, 0x95, 0x96,
0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa2, 0xa3, 0xa4, 0xa4},
{ 0x80, 0x82, 0x83, 0x85, 0x86, 0x88, 0x89, 0x8b, 0x8c, 0x8e, 0x8f, 0x90, 0x92, 0x93, 0x94, 0x95,
0x96, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa2, 0xa3, 0xa4},
{ 0x80, 0x82, 0x83, 0x85, 0x86, 0x87, 0x89, 0x8a, 0x8c, 0x8d, 0x8e, 0x90, 0x91, 0x92, 0x93, 0x95,
0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9e, 0x9f, 0xa0, 0xa1, 0xa1, 0xa2, 0xa3},
{ 0x80, 0x81, 0x83, 0x84, 0x86, 0x87, 0x89, 0x8a, 0x8b, 0x8d, 0x8e, 0x8f, 0x90, 0x92, 0x93, 0x94,
0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9e, 0x9f, 0xa0, 0xa1, 0xa1, 0xa2},
{ 0x80, 0x81, 0x83, 0x84, 0x86, 0x87, 0x88, 0x8a, 0x8b, 0x8c, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93,
0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0x9f, 0xa0, 0xa1, 0xa1},
{ 0x80, 0x81, 0x83, 0x84, 0x85, 0x87, 0x88, 0x89, 0x8b, 0x8c, 0x8d, 0x8e, 0x90, 0x91, 0x92, 0x93,
0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0x9f, 0xa0, 0xa1},
{ 0x80, 0x81, 0x83, 0x84, 0x85, 0x87, 0x88, 0x89, 0x8a, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92,
0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9c, 0x9d, 0x9e, 0x9f, 0x9f, 0xa0}};
short ST010_Sin(short Theta)
{
return ST010_SinTable[(Theta >> 8) & 0xff];
}
short ST010_Cos(short Theta)
{
return ST010_SinTable[((Theta + 0x4000) >> 8) & 0xff];
}
void ST010_OP01(short x0, short y0, short &x1, short &y1, short &Quadrant, short &Theta)
{
if ((x0 < 0) && (y0 < 0))
{
x1 = -x0;
y1 = -y0;
Quadrant = -0x8000;
}
else if (x0 < 0)
{
x1 = y0;
y1 = -x0;
Quadrant = -0x4000;
}
else if (y0 < 0)
{
x1 = -y0;
y1 = x0;
Quadrant = 0x4000;
}
else
{
x1 = x0;
y1 = y0;
Quadrant = 0x0000;
}
while ((x1 > 0x1f) || (y1 > 0x1f))
{
if (x1 > 1) x1 >>= 1;
if (y1 > 1) y1 >>= 1;
}
if (y1 == 0) Quadrant += 0x4000;
Theta = (ST010_ArcTan[y1][x1] << 8) ^ Quadrant;
}
void ST010_Scale(short Multiplier, short X0, short Y0, int &X1, int &Y1)
{
X1 = X0 * Multiplier << 1;
Y1 = Y0 * Multiplier << 1;
}
void ST010_Multiply(short Multiplicand, short Multiplier, int &Product)
{
Product = Multiplicand * Multiplier << 1;
}
void ST010_Rotate(short Theta, short X0, short Y0, short &X1, short &Y1)
{
X1 = (Y0 * ST010_Sin(Theta) >> 15) + (X0 * ST010_Cos(Theta) >> 15);
Y1 = (Y0 * ST010_Cos(Theta) >> 15) - (X0 * ST010_Sin(Theta) >> 15);
}
void SETA_Distance(short Y0, short X0, short &Distance)
{
if (X0 < 0) X0 = -X0;
if (Y0 < 0) Y0 = -Y0;
Distance = ((X0 * 0x7af0) + 0x4000) >> 15;
}
void ST010_SortDrivers(uint16 Positions, uint16 Places[32], uint16 Drivers[32])
{
bool Sorted;
uint16 Temp;
if (Positions > 1)
do {
Sorted = true;
for (int i = 0; i < Positions - 1; i++)
if (Places[i] < Places[i + 1])
{
Temp = Places[i + 1];
Places[i + 1] = Places[i];
Places[i] = Temp;
Temp = Drivers[i + 1];
Drivers[i + 1] = Drivers[i];
Drivers[i] = Temp;
Sorted = false;
}
Positions--;
} while (!Sorted);
}
#define ST010_WORD(offset) (Memory.SRAM[offset + 1] << 8) | Memory.SRAM[offset]
void S9xSetST010(uint32 Address, uint8 Byte)
{
if(!(Address&0x80000))
{
ST010.control_enable=TRUE;
return;
}
//printf("Write %06X:%02X\n", Address, Byte);
if((Address &0xFFF) ==0x20 && ST010.control_enable)
ST010.op_reg=Byte;
if((Address &0xFFF) ==0x21 && ST010.control_enable)
ST010.execute=Byte;
else Memory.SRAM[Address&Memory.SRAMMask]=Byte;
if(ST010.execute&0x80)
{
switch(ST010.op_reg)
{
// Sorts Driver Placements
//
// Input
// 0x0024-0x0025 : Positions
// 0x0040-0x007f : Places
// 0x0080-0x00ff : Drivers
// Output
// 0x0040-0x007f : Places
// 0x0080-0x00ff : Drivers
//
case 0x02:
{
#ifdef FAST_LSB_WORD_ACCESS
ST010_SortDrivers(*(short*)&SRAM[0x0024], (uint16*) (SRAM + 0x0040), (uint16*) (SRAM + 0x0080));
#else
uint16 Places[32];
uint16 Positions = ST010_WORD(0x0024);
int Pos, Offset;
Offset = 0;
for (Pos = 0; Pos < Positions; Pos++)
{
Places[Pos] = ST010_WORD(0x0040 + Offset);
Offset += 2;
}
ST010_SortDrivers(Positions, Places, (uint16*) (SRAM + 0x0080));
Offset = 0;
for (Pos = 0; Pos < Positions; Pos++)
{
SRAM[0x0040 + Offset]=(uint8)(Places[Pos]);
SRAM[0x0041 + Offset]=(uint8)(Places[Pos] >> 8);
Offset += 2;
}
#endif
break;
}
// Two Dimensional Coordinate Scale
//
// Input
// 0x0000-0x0001 : X0 (signed)
// 0x0002-0x0003 : Y0 (signed)
// 0x0004-0x0005 : Multiplier (signed)
// Output
// 0x0010-0x0013 : X1 (signed)
// 0x0014-0x0017 : Y1 (signed)
//
case 0x03:
{
#ifdef FAST_LSB_WORD_ACCESS
ST010_Scale(*(short*)&Memory.SRAM[0x0004], *(short*)&Memory.SRAM[0x0000], *(short*)&Memory.SRAM[0x0002],
(int&) Memory.SRAM[0x0010], (int&) Memory.SRAM[0x0014]);
#else
int x1, y1;
ST010_Scale(ST010_WORD(0x0004), ST010_WORD(0x0000), ST010_WORD(0x0002), x1, y1);
Memory.SRAM[0x0010]=(uint8)(x1);
Memory.SRAM[0x0011]=(uint8)(x1 >> 8);
Memory.SRAM[0x0012]=(uint8)(x1 >> 16);
Memory.SRAM[0x0013]=(uint8)(x1 >> 24);
Memory.SRAM[0x0014]=(uint8)(y1);
Memory.SRAM[0x0015]=(uint8)(y1 >> 8);
Memory.SRAM[0x0016]=(uint8)(y1 >> 16);
Memory.SRAM[0x0017]=(uint8)(y1 >> 24);
#endif
break;
}
// 16-bit Multiplication
//
// Input
// 0x0000-0x0001 : Multiplcand (signed)
// 0x0002-0x0003 : Multiplier (signed)
// Output
// 0x0010-0x0013 : Product (signed)
//
case 0x06:
{
#ifdef FAST_LSB_WORD_ACCESS
ST010_Multiply(*(short*)&Memory.SRAM[0x0000], *(short*)&Memory.SRAM[0x0002], (int&) Memory.SRAM[0x0010]);
#else
int Product;
ST010_Multiply(ST010_WORD(0x0000), ST010_WORD(0x0002), Product);
Memory.SRAM[0x0010]=(uint8)(Product);
Memory.SRAM[0x0011]=(uint8)(Product >> 8);
Memory.SRAM[0x0012]=(uint8)(Product >> 16);
Memory.SRAM[0x0013]=(uint8)(Product >> 24);
#endif
break;
}
// Mode 7 Raster Data Calculation
//
// Input
// 0x0000-0x0001 : Angle (signed)
// Output
// 0x00f0-0x024f : Mode 7 Matrix A
// 0x0250-0x03af : Mode 7 Matrix B
// 0x03b0-0x050f : Mode 7 Matrix C
// 0x0510-0x066f : Mode 7 Matrix D
//
case 0x07:
{
int16 data;
int32 offset = 0;
int16 Theta = ST010_WORD(0x0000);
for (int32 line = 0; line < 176; line++)
{
// Calculate Mode 7 Matrix A/D data
data = ST010_M7Scale[line] * ST010_Cos(Theta) >> 15;
Memory.SRAM[0x00f0 + offset]=(uint8)(data);
Memory.SRAM[0x00f1 + offset]=(uint8)(data >> 8);
Memory.SRAM[0x0510 + offset]=(uint8)(data);
Memory.SRAM[0x0511 + offset]=(uint8)(data >> 8);
// Calculate Mode 7 Matrix B/C data
data = ST010_M7Scale[line] * ST010_Sin(Theta) >> 15;
Memory.SRAM[0x0250 + offset]=(uint8)(data);
Memory.SRAM[0x0251 + offset]=(uint8)(data >> 8);
if (data) data = ~data;
Memory.SRAM[0x03b0 + offset]=(uint8)(data);
Memory.SRAM[0x03b1 + offset]=(uint8)(data >> 8);
offset += 2;
}
// Shift Angle for use with Lookup table
Memory.SRAM[0x00] = Memory.SRAM[0x01];
Memory.SRAM[0x01] = 0x00;
break;
}
// Two dimensional Coordinate Rotation
//
// Input
// 0x0000-0x0001 : X0 (signed)
// 0x0002-0x0003 : Y0 (signed)
// 0x0004-0x0005 : Angle (signed)
// Output
// 0x0010-0x0011 : X1 (signed)
// 0x0012-0x0013 : Y1 (signed)
//
case 0x08:
{
#ifdef FAST_LSB_WORD_ACCESS
ST010_Rotate(*(short*)&Memory.SRAM[0x0004], *(short*)&Memory.SRAM[0x0000], *(short*)&Memory.SRAM[0x0002],
(short&) Memory.SRAM[0x0010], (short&) Memory.SRAM[0x0012]);
#else
short x1, y1;
ST010_Rotate(ST010_WORD(0x0004), ST010_WORD(0x0000), ST010_WORD(0x0002), x1, y1);
Memory.SRAM[0x0010]=(uint8)(x1);
Memory.SRAM[0x0011]=(uint8)(x1 >> 8);
Memory.SRAM[0x0012]=(uint8)(y1);
Memory.SRAM[0x0013]=(uint8)(y1 >> 8);
#endif
break;
}
// Input
// 0x0000-0x0001 : DX (signed)
// 0x0002-0x0003 : DY (signed)
// Output
// 0x0010-0x0011 : Angle (signed)
//
case 0x01:
{
Memory.SRAM[0x0006] = Memory.SRAM[0x0002];
Memory.SRAM[0x0007] = Memory.SRAM[0x0003];
#ifdef FAST_LSB_WORD_ACCESS
ST010_OP01(*(short*)&Memory.SRAM[0x0000], *(short*)&Memory.SRAM[0x0002],
(short&) Memory.SRAM[0x0000], (short&) Memory.SRAM[0x0002],
(short&) Memory.SRAM[0x0004], (short&) Memory.SRAM[0x0010]);
#else
short x1, y1, Quadrant, Theta;
ST010_OP01(ST010_WORD(0x0000), ST010_WORD(0x0002), x1, y1, Quadrant, Theta);
Memory.SRAM[0x0000]=(uint8)(x1);
Memory.SRAM[0x0001]=(uint8)(x1 >> 8);
Memory.SRAM[0x0002]=(uint8)(y1);
Memory.SRAM[0x0003]=(uint8)(y1 >> 8);
Memory.SRAM[0x0004]=(uint8)(Quadrant);
Memory.SRAM[0x0005]=(uint8)(Quadrant >> 8);
Memory.SRAM[0x0010]=(uint8)(Theta);
Memory.SRAM[0x0011]=(uint8)(Theta >> 8);
#endif
break;
}
// calculate the vector length of (x,y)
case 0x04:
{
int16 square, x,y;
#ifdef FAST_LSB_WORD_ACCESS
x=*((int16*)Memory.SRAM);
y=*((int16*)&Memory.SRAM[2]);
#else
x=Memory.SRAM[0]|(Memory.SRAM[1]<<8);
y=Memory.SRAM[2]|(Memory.SRAM[3]<<8);
#endif
square=(int16)sqrt((double)(y*y+x*x));
//SETA_Distance( x,y,square );
#ifdef FAST_LSB_WORD_ACCESS
*((int16*)&Memory.SRAM[0x10])=square;
#else
Memory.SRAM[0x10]=(uint8)(square);
Memory.SRAM[0x11]=(uint8)(square>>8);
#endif
break;
}
// calculate AI orientation based on specific guidelines
case 0x05:
{
int dx,dy;
int16 a1,b1,c1;
uint16 o1;
bool wrap=false;
// target (x,y) coordinates
int16 ypos_max = ST010_WORD(0x00C0);
int16 xpos_max = ST010_WORD(0x00C2);
// current coordinates and direction
int32 ypos = SRAM[0xC4]|(SRAM[0xC5]<<8)|(SRAM[0xC6]<<16)|(SRAM[0xC7]<<24);
int32 xpos = SRAM[0xC8]|(SRAM[0xC9]<<8)|(SRAM[0xCA]<<16)|(SRAM[0xCB]<<24);
uint16 rot = SRAM[0xCC]|(SRAM[0xCD]<<8);
// physics
uint16 speed = ST010_WORD(0x00D4);
uint16 accel = ST010_WORD(0x00D6);
uint16 speed_max = ST010_WORD(0x00D8);
// special condition acknowledgment
int16 system = ST010_WORD(0x00DA);
int16 flags = ST010_WORD(0x00DC);
// new target coordinates
int16 ypos_new = ST010_WORD(0x00DE);
int16 xpos_new = ST010_WORD(0x00E0);
// mask upper bit
xpos_new &= 0x7FFF;
// get the current distance
dx = xpos_max-(xpos>>16);
dy = ypos_max-(ypos>>16);
// quirk: clear and move in9
SRAM[0xD2]=0xFF;
SRAM[0xD3]=0xFF;
SRAM[0xDA]=0;
SRAM[0xDB]=0;
// grab the target angle
ST010_OP01(dy,dx,a1,b1,c1,(int16 &)o1);
// check for wrapping
//if((o1<0x6000 && rot>0xA000) ||
// (rot<0x6000 && o1>0xA000))
//if(o1<rot)
if(abs(o1-rot)>0x8000)
{
o1+=0x8000;
rot+=0x8000;
wrap=true;
}
//o1=0x0000;
//rot=0xFF00;
uint16 old_speed;
old_speed = speed;
// special case
if(abs(o1-rot)==0x8000)
{
speed = 0x100;
}
// slow down for sharp curves
else if(abs(o1-rot)>=0x1000)
{
uint32 slow = abs(o1-rot);
slow >>= 4; // scaling
speed -= slow;
}
// otherwise accelerate
else
{
speed += accel;
if(speed > speed_max)
{
// clip speed
speed = speed_max;
}
}
// prevent negative/positive overflow
if(abs(old_speed-speed)>0x8000) {
if(old_speed<speed) speed=0;
else speed=0xff00;
}
// adjust direction by so many degrees
// be careful of negative adjustments
if( (o1>rot && (o1-rot)>0x80) ||
(o1<rot && (rot-o1)>=0x80) )
{
if(o1<rot) rot-=0x280;
else if(o1>rot) rot+=0x280;
}
// turn off wrapping
if(wrap) rot-=0x8000;
// now check the distances (store for later)
dx = (xpos_max<<16)-xpos;
dy = (ypos_max<<16)-ypos;
dx>>=16;
dy>>=16;
// if we're in so many units of the target, signal it
if( ( system && (dy<=6 && dy>=-8) && (dx<=126 && dx>=-128)) ||
(!system && (dx<=6 && dx>=-8) && (dy<=126 && dy>=-128)) )
{
// announce our new destination and flag it
xpos_max = xpos_new&0x7FFF;
ypos_max = ypos_new;
flags |= 0x08;
}
// update position
xpos -= (ST010_Cos(rot) * 0x400 >> 15) * (speed >> 8) << 1;
ypos -= (ST010_Sin(rot) * 0x400 >> 15) * (speed >> 8) << 1;
// quirk: mask upper byte
xpos &= 0x1FFFFFFF;
ypos &= 0x1FFFFFFF;
SRAM[0x00C0]=(uint8)(ypos_max);
SRAM[0x00C1]=(uint8)(ypos_max >> 8);
SRAM[0x00C2]=(uint8)(xpos_max);
SRAM[0x00C3]=(uint8)(xpos_max >> 8);
SRAM[0x00C4]=(uint8)(ypos);
SRAM[0x00C5]=(uint8)(ypos >> 8);
SRAM[0x00C6]=(uint8)(ypos >> 16);
SRAM[0x00C7]=(uint8)(ypos >> 24);
SRAM[0x00C8]=(uint8)(xpos);
SRAM[0x00C9]=(uint8)(xpos >> 8);
SRAM[0x00CA]=(uint8)(xpos >> 16);
SRAM[0x00CB]=(uint8)(xpos >> 24);
SRAM[0x00CC]=(uint8)(rot);
SRAM[0x00CD]=(uint8)(rot >> 8);
SRAM[0x00D4]=(uint8)(speed);
SRAM[0x00D5]=(uint8)(speed >> 8);
SRAM[0x00DC]=(uint8)(flags);
SRAM[0x00DD]=(uint8)(flags >> 8);
break;
}
default:
printf("Unknown Op\n");
break;
}
// lower signal: op processed
ST010.op_reg=0;
ST010.execute=0;
}
}
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