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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 2024-11-05 02:07:42 +0000