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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 2001 - 2004 John Weidman (jweidman@slip.net)
-
- (c) Copyright 2002 - 2004 Brad Jorsch (anomie@users.sourceforge.net),
- funkyass (funkyass@spam.shaw.ca),
- Joel Yliluoma (http://iki.fi/bisqwit/)
- Kris Bleakley (codeviolation@hotmail.com),
- Matthew Kendora,
- Nach (n-a-c-h@users.sourceforge.net),
- Peter Bortas (peter@bortas.org) and
- zones (kasumitokoduck@yahoo.com)
-
- C4 x86 assembler and some C emulation code
- (c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com),
- _Demo_ (_demo_@zsnes.com), and Nach
-
- C4 C++ code
- (c) Copyright 2003 Brad Jorsch
-
- DSP-1 emulator code
- (c) Copyright 1998 - 2004 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson,
- John Weidman, neviksti (neviksti@hotmail.com),
- Kris Bleakley, Andreas Naive
-
- DSP-2 emulator code
- (c) Copyright 2003 Kris Bleakley, John Weidman, neviksti, Matthew Kendora, and
- Lord Nightmare (lord_nightmare@users.sourceforge.net
-
- OBC1 emulator code
- (c) Copyright 2001 - 2004 zsKnight, pagefault (pagefault@zsnes.com) and
- 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, and Dark Force
-
- S-DD1 C emulator code
- (c) Copyright 2003 Brad Jorsch with research by
- Andreas Naive and John Weidman
-
- S-RTC C emulator code
- (c) Copyright 2001 John Weidman
-
- ST010 C++ emulator code
- (c) Copyright 2003 Feather, Kris Bleakley, John Weidman and Matthew Kendora
-
- Super FX x86 assembler emulator code
- (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault
-
- Super FX C emulator code
- (c) Copyright 1997 - 1999 Ivar, Gary Henderson and John Weidman
-
-
- SH assembler code partly based on x86 assembler code
- (c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se)
-
-
- 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 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.
-
- Snes9x is freeware for PERSONAL USE only. Commercial users should
- seek permission of the copyright holders first. Commercial use includes
- charging money for Snes9x or software derived from Snes9x.
-
- 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;
- }
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 17:58:15 +0000