start moving everything to C

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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 "snes9x.h"
+#include "memmap.h"
+#include "ppu.h"
+#include "dsp1.h"
+#include "missing.h"
+#include "cpuexec.h"
+#include "apu.h"
+#include "dma.h"
+#include "fxemu.h"
+#include "gfx.h"
+#include "soundux.h"
+#include "cheats.h"
+#include "sa1.h"
+#include "spc7110.h"
+
+START_EXTERN_C
+char String[513];
+
+struct Missing missing;
+
+struct SICPU ICPU;
+
+struct SCPUState CPU;
+
+struct SAPU APU;
+
+struct SIAPU IAPU;
+
+struct SSettings Settings;
+
+struct SDSP1 DSP1;
+
+struct SSA1 SA1;
+
+SSoundData SoundData;
+
+SnesModel M1SNES={1,3,2};
+SnesModel M2SNES={2,4,3};
+SnesModel* Model=&M1SNES;
+
+
+uint8 *SRAM = NULL;
+uint8 *ROM = NULL;
+uint8 *RegRAM = NULL;
+uint8 *C4RAM = NULL;
+
+long OpAddress = 0;
+
+CMemory Memory;
+
+struct SSNESGameFixes SNESGameFixes;
+
+uint8 OpenBus = 0;
+
+
+END_EXTERN_C
+
+#ifndef ZSNES_FX
+struct FxInit_s SuperFX;
+#else
+START_EXTERN_C
+uint8 *SFXPlotTable = NULL;
+END_EXTERN_C
+#endif
+
+struct SPPU PPU;
+struct InternalPPU IPPU;
+
+struct SDMA DMA[8];
+
+uint8 *HDMAMemPointers [8];
+uint8 *HDMABasePointers [8];
+
+struct SBG BG;
+
+struct SGFX GFX;
+struct SLineData LineData[240];
+struct SLineMatrixData LineMatrixData [240];
+
+uint8 Mode7Depths [2];
+NormalTileRenderer DrawTilePtr = NULL;
+ClippedTileRenderer DrawClippedTilePtr = NULL;
+NormalTileRenderer DrawHiResTilePtr = NULL;
+ClippedTileRenderer DrawHiResClippedTilePtr = NULL;
+LargePixelRenderer DrawLargePixelPtr = NULL;
+
+uint32 odd_high[4][16];
+uint32 odd_low[4][16];
+uint32 even_high[4][16];
+uint32 even_low[4][16];
+
+struct SCheatData Cheat;
+
+SoundStatus so;
+
+int Echo [24000];
+int DummyEchoBuffer [SOUND_BUFFER_SIZE];
+int MixBuffer [SOUND_BUFFER_SIZE];
+int EchoBuffer [SOUND_BUFFER_SIZE];
+int FilterTaps [8];
+unsigned long Z = 0;
+int Loop [16];
+
+uint16 SignExtend [2] = {
+    0x00, 0xff00
+};
+
+//modified per anomie Mode 5 findings
+int HDMA_ModeByteCounts [8] = {
+    1, 2, 2, 4, 4, 4, 2, 4
+};
+
+uint8 BitShifts[8][4] =
+{
+    {2, 2, 2, 2},	// 0
+    {4, 4, 2, 0},	// 1
+    {4, 4, 0, 0},	// 2
+    {8, 4, 0, 0},	// 3
+    {8, 2, 0, 0},	// 4
+    {4, 2, 0, 0},	// 5
+    {4, 0, 0, 0},	// 6
+    {8, 0, 0, 0}	// 7
+};
+uint8 TileShifts[8][4] =
+{
+    {4, 4, 4, 4},	// 0
+    {5, 5, 4, 0},	// 1
+    {5, 5, 0, 0},	// 2
+    {6, 5, 0, 0},	// 3
+    {6, 4, 0, 0},	// 4
+    {5, 4, 0, 0},	// 5
+    {5, 0, 0, 0},	// 6
+    {6, 0, 0, 0}	// 7
+};
+uint8 PaletteShifts[8][4] =
+{
+    {2, 2, 2, 2},	// 0
+    {4, 4, 2, 0},	// 1
+    {4, 4, 0, 0},	// 2
+    {0, 4, 0, 0},	// 3
+    {0, 2, 0, 0},	// 4
+    {4, 2, 0, 0},	// 5
+    {4, 0, 0, 0},	// 6
+    {0, 0, 0, 0}	// 7
+};
+uint8 PaletteMasks[8][4] =
+{
+    {7, 7, 7, 7},	// 0
+    {7, 7, 7, 0},	// 1
+    {7, 7, 0, 0},	// 2
+    {0, 7, 0, 0},	// 3
+    {0, 7, 0, 0},	// 4
+    {7, 7, 0, 0},	// 5
+    {7, 0, 0, 0},	// 6
+    {0, 0, 0, 0}	// 7
+};
+uint8 Depths[8][4] =
+{
+    {TILE_2BIT, TILE_2BIT, TILE_2BIT, TILE_2BIT}, // 0
+    {TILE_4BIT, TILE_4BIT, TILE_2BIT, 0},         // 1
+    {TILE_4BIT, TILE_4BIT, 0, 0},                 // 2
+    {TILE_8BIT, TILE_4BIT, 0, 0},                 // 3
+    {TILE_8BIT, TILE_2BIT, 0, 0},                 // 4
+    {TILE_4BIT, TILE_2BIT, 0, 0},                 // 5
+    {TILE_4BIT, 0, 0, 0},                         // 6
+    {0, 0, 0, 0}                                  // 7
+};
+uint8 BGSizes [2] = {
+    8, 16
+};
+uint16 DirectColourMaps [8][256];
+
+long FilterValues[4][2] =
+{
+    {0, 0},
+    {240, 0},
+    {488, -240},
+    {460, -208}
+};
+
+int NoiseFreq [32] = {
+    0, 16, 21, 25, 31, 42, 50, 63, 84, 100, 125, 167, 200, 250, 333,
+    400, 500, 667, 800, 1000, 1300, 1600, 2000, 2700, 3200, 4000,
+    5300, 6400, 8000, 10700, 16000, 32000
+};
+
+uint32 HeadMask [4] = {
+#ifdef LSB_FIRST
+    0xffffffff, 0xffffff00, 0xffff0000, 0xff000000
+#else
+    0xffffffff, 0x00ffffff, 0x0000ffff, 0x000000ff
+#endif
+};
+
+uint32 TailMask [5] = {
+#ifdef LSB_FIRST
+    0x00000000, 0x000000ff, 0x0000ffff, 0x00ffffff, 0xffffffff
+#else
+    0x00000000, 0xff000000, 0xffff0000, 0xffffff00, 0xffffffff
+#endif
+};
+
+START_EXTERN_C
+uint8 APUROM [64] =
+{
+    0xCD,0xEF,0xBD,0xE8,0x00,0xC6,0x1D,0xD0,0xFC,0x8F,0xAA,0xF4,0x8F,
+    0xBB,0xF5,0x78,0xCC,0xF4,0xD0,0xFB,0x2F,0x19,0xEB,0xF4,0xD0,0xFC,
+    0x7E,0xF4,0xD0,0x0B,0xE4,0xF5,0xCB,0xF4,0xD7,0x00,0xFC,0xD0,0xF3,
+    0xAB,0x01,0x10,0xEF,0x7E,0xF4,0x10,0xEB,0xBA,0xF6,0xDA,0x00,0xBA,
+    0xF4,0xC4,0xF4,0xDD,0x5D,0xD0,0xDB,0x1F,0x00,0x00,0xC0,0xFF
+};
+
+
+// Raw SPC700 instruction cycle lengths
+uint16 S9xAPUCycleLengths [256] = 
+{
+    /*        0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, */
+    /* 00 */  2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 5, 4, 5, 4, 6, 8, 
+    /* 10 */  2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 6, 5, 2, 2, 4, 6, 
+    /* 20 */  2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 5, 4, 5, 4, 5, 4, 
+    /* 30 */  2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 6, 5, 2, 2, 3, 8, 
+    /* 40 */  2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 4, 4, 5, 4, 6, 6, 
+    /* 50 */  2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 4, 5, 2, 2, 4, 3, 
+    /* 60 */  2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 4, 4, 5, 4, 5, 5, 
+    /* 70 */  2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 5, 5, 2, 2, 3, 6, 
+    /* 80 */  2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 5, 4, 5, 2, 4, 5, 
+    /* 90 */  2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 5, 5, 2, 2,12, 5, 
+    /* a0 */  3, 8, 4, 5, 3, 4, 3, 6, 2, 6, 4, 4, 5, 2, 4, 4, 
+    /* b0 */  2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 5, 5, 2, 2, 3, 4, 
+    /* c0 */  3, 8, 4, 5, 4, 5, 4, 7, 2, 5, 6, 4, 5, 2, 4, 9, 
+    /* d0 */  2, 8, 4, 5, 5, 6, 6, 7, 4, 5, 4, 5, 2, 2, 6, 3, 
+    /* e0 */  2, 8, 4, 5, 3, 4, 3, 6, 2, 4, 5, 3, 4, 3, 4, 3, 
+    /* f0 */  2, 8, 4, 5, 4, 5, 5, 6, 3, 4, 5, 4, 2, 2, 4, 3
+};
+
+// Actual data used by CPU emulation, will be scaled by APUReset routine
+// to be relative to the 65c816 instruction lengths.
+uint16 S9xAPUCycles [256] =
+{
+    /*        0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, */
+    /* 00 */  2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 5, 4, 5, 4, 6, 8, 
+    /* 10 */  2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 6, 5, 2, 2, 4, 6, 
+    /* 20 */  2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 5, 4, 5, 4, 5, 4, 
+    /* 30 */  2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 6, 5, 2, 2, 3, 8, 
+    /* 40 */  2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 4, 4, 5, 4, 6, 6, 
+    /* 50 */  2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 4, 5, 2, 2, 4, 3, 
+    /* 60 */  2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 4, 4, 5, 4, 5, 5, 
+    /* 70 */  2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 5, 5, 2, 2, 3, 6, 
+    /* 80 */  2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 5, 4, 5, 2, 4, 5, 
+    /* 90 */  2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 5, 5, 2, 2,12, 5, 
+    /* a0 */  3, 8, 4, 5, 3, 4, 3, 6, 2, 6, 4, 4, 5, 2, 4, 4, 
+    /* b0 */  2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 5, 5, 2, 2, 3, 4, 
+    /* c0 */  3, 8, 4, 5, 4, 5, 4, 7, 2, 5, 6, 4, 5, 2, 4, 9, 
+    /* d0 */  2, 8, 4, 5, 5, 6, 6, 7, 4, 5, 4, 5, 2, 2, 6, 3, 
+    /* e0 */  2, 8, 4, 5, 3, 4, 3, 6, 2, 4, 5, 3, 4, 3, 4, 3, 
+    /* f0 */  2, 8, 4, 5, 4, 5, 5, 6, 3, 4, 5, 4, 2, 2, 4, 3
+};
+
+END_EXTERN_C
+