mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-11-01 08:25:18 +01:00
adf61aef32
- Fixed invalid memory accesses in C4 and OBC1. MMX3 Toxic Seahorse stage now can be emulated with HDMA. (zones) - Updated snapshot to prevent desync. Added some variables related to APU and HDMA. (gocha)
394 lines
12 KiB
C++
394 lines
12 KiB
C++
/**********************************************************************************
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Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
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(c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com),
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Jerremy Koot (jkoot@snes9x.com)
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(c) Copyright 2002 - 2004 Matthew Kendora
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(c) Copyright 2002 - 2005 Peter Bortas (peter@bortas.org)
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(c) Copyright 2004 - 2005 Joel Yliluoma (http://iki.fi/bisqwit/)
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(c) Copyright 2001 - 2006 John Weidman (jweidman@slip.net)
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(c) Copyright 2002 - 2006 funkyass (funkyass@spam.shaw.ca),
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Kris Bleakley (codeviolation@hotmail.com)
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(c) Copyright 2002 - 2007 Brad Jorsch (anomie@users.sourceforge.net),
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Nach (n-a-c-h@users.sourceforge.net),
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zones (kasumitokoduck@yahoo.com)
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(c) Copyright 2006 - 2007 nitsuja
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BS-X C emulator code
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(c) Copyright 2005 - 2006 Dreamer Nom,
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zones
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C4 x86 assembler and some C emulation code
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(c) Copyright 2000 - 2003 _Demo_ (_demo_@zsnes.com),
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Nach,
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zsKnight (zsknight@zsnes.com)
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C4 C++ code
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(c) Copyright 2003 - 2006 Brad Jorsch,
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Nach
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DSP-1 emulator code
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(c) Copyright 1998 - 2006 _Demo_,
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Andreas Naive (andreasnaive@gmail.com)
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Gary Henderson,
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Ivar (ivar@snes9x.com),
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John Weidman,
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Kris Bleakley,
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Matthew Kendora,
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Nach,
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neviksti (neviksti@hotmail.com)
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DSP-2 emulator code
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(c) Copyright 2003 John Weidman,
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Kris Bleakley,
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Lord Nightmare (lord_nightmare@users.sourceforge.net),
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Matthew Kendora,
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neviksti
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DSP-3 emulator code
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(c) Copyright 2003 - 2006 John Weidman,
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Kris Bleakley,
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Lancer,
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z80 gaiden
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DSP-4 emulator code
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(c) Copyright 2004 - 2006 Dreamer Nom,
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John Weidman,
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Kris Bleakley,
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Nach,
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z80 gaiden
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OBC1 emulator code
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(c) Copyright 2001 - 2004 zsKnight,
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pagefault (pagefault@zsnes.com),
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Kris Bleakley,
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Ported from x86 assembler to C by sanmaiwashi
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SPC7110 and RTC C++ emulator code
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(c) Copyright 2002 Matthew Kendora with research by
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zsKnight,
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John Weidman,
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Dark Force
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S-DD1 C emulator code
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(c) Copyright 2003 Brad Jorsch with research by
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Andreas Naive,
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John Weidman
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S-RTC C emulator code
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(c) Copyright 2001-2006 byuu,
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John Weidman
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ST010 C++ emulator code
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(c) Copyright 2003 Feather,
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John Weidman,
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Kris Bleakley,
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Matthew Kendora
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Super FX x86 assembler emulator code
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(c) Copyright 1998 - 2003 _Demo_,
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pagefault,
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zsKnight,
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Super FX C emulator code
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(c) Copyright 1997 - 1999 Ivar,
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Gary Henderson,
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John Weidman
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Sound DSP emulator code is derived from SNEeSe and OpenSPC:
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(c) Copyright 1998 - 2003 Brad Martin
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(c) Copyright 1998 - 2006 Charles Bilyue'
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SH assembler code partly based on x86 assembler code
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(c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se)
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2xSaI filter
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(c) Copyright 1999 - 2001 Derek Liauw Kie Fa
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HQ2x, HQ3x, HQ4x filters
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(c) Copyright 2003 Maxim Stepin (maxim@hiend3d.com)
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Win32 GUI code
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(c) Copyright 2003 - 2006 blip,
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funkyass,
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Matthew Kendora,
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Nach,
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nitsuja
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Mac OS GUI code
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(c) Copyright 1998 - 2001 John Stiles
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(c) Copyright 2001 - 2007 zones
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Specific ports contains the works of other authors. See headers in
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individual files.
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Snes9x homepage: http://www.snes9x.com
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Permission to use, copy, modify and/or distribute Snes9x in both binary
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and source form, for non-commercial purposes, is hereby granted without
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fee, providing that this license information and copyright notice appear
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with all copies and any derived work.
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This software is provided 'as-is', without any express or implied
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warranty. In no event shall the authors be held liable for any damages
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arising from the use of this software or it's derivatives.
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Snes9x is freeware for PERSONAL USE only. Commercial users should
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seek permission of the copyright holders first. Commercial use includes,
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but is not limited to, charging money for Snes9x or software derived from
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Snes9x, including Snes9x or derivatives in commercial game bundles, and/or
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using Snes9x as a promotion for your commercial product.
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The copyright holders request that bug fixes and improvements to the code
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should be forwarded to them so everyone can benefit from the modifications
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in future versions.
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Super NES and Super Nintendo Entertainment System are trademarks of
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Nintendo Co., Limited and its subsidiary companies.
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**********************************************************************************/
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#include "snes9x.h"
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#include "memmap.h"
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#include "ppu.h"
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#include "dsp1.h"
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#include "missing.h"
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#include "cpuexec.h"
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#include "debug.h"
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#include "apu.h"
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#include "dma.h"
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#include "fxemu.h"
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#include "gfx.h"
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#include "soundux.h"
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#include "cheats.h"
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#include "sa1.h"
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#include "bsx.h"
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#include "spc7110.h"
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#ifdef NETPLAY_SUPPORT
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#include "netplay.h"
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#endif
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START_EXTERN_C
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char String[513];
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struct Missing missing;
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struct SICPU ICPU;
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struct SCPUState CPU;
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struct STimings Timings;
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struct SRegisters Registers;
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struct SAPU APU;
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struct SIAPU IAPU;
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struct SAPURegisters APURegisters;
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struct SSettings Settings;
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struct SSA1Registers SA1Registers;
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struct SSA1 SA1;
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struct SBSX BSX;
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struct SMulti Multi;
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SSoundData SoundData;
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#if defined(ZSNES_FX) || defined(ZSNES_C4)
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uint8 *ROM = NULL;
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uint8 *SRAM = NULL;
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uint8 *RegRAM = NULL;
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#endif
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CMemory Memory;
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struct SSNESGameFixes SNESGameFixes;
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unsigned char OpenBus = 0;
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END_EXTERN_C
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struct SDSP1 DSP1;
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SnesModel M1SNES={1,3,2};
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SnesModel M2SNES={2,4,3};
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SnesModel* Model=&M1SNES;
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#ifndef ZSNES_FX
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struct FxInit_s SuperFX;
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#else
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START_EXTERN_C
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uint8 *SFXPlotTable = NULL;
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END_EXTERN_C
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#endif
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struct SPPU PPU;
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struct InternalPPU IPPU;
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struct SDMA DMA[8];
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uint8 *HDMAMemPointers [8];
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uint8 *HDMABasePointers [8];
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struct SBG BG;
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struct SGFX GFX;
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struct SLineData LineData[240];
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struct SLineMatrixData LineMatrixData [240];
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#ifdef GFX_MULTI_FORMAT
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uint32 RED_LOW_BIT_MASK = RED_LOW_BIT_MASK_RGB565;
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uint32 GREEN_LOW_BIT_MASK = GREEN_LOW_BIT_MASK_RGB565;
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uint32 BLUE_LOW_BIT_MASK = BLUE_LOW_BIT_MASK_RGB565;
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uint32 RED_HI_BIT_MASK = RED_HI_BIT_MASK_RGB565;
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uint32 GREEN_HI_BIT_MASK = GREEN_HI_BIT_MASK_RGB565;
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uint32 BLUE_HI_BIT_MASK = BLUE_HI_BIT_MASK_RGB565;
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uint32 MAX_RED = MAX_RED_RGB565;
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uint32 MAX_GREEN = MAX_GREEN_RGB565;
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uint32 MAX_BLUE = MAX_BLUE_RGB565;
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uint32 SPARE_RGB_BIT_MASK = SPARE_RGB_BIT_MASK_RGB565;
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uint32 GREEN_HI_BIT = (MAX_GREEN_RGB565 + 1) >> 1;
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uint32 RGB_LOW_BITS_MASK = (RED_LOW_BIT_MASK_RGB565 |
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GREEN_LOW_BIT_MASK_RGB565 |
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BLUE_LOW_BIT_MASK_RGB565);
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uint32 RGB_HI_BITS_MASK = (RED_HI_BIT_MASK_RGB565 |
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GREEN_HI_BIT_MASK_RGB565 |
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BLUE_HI_BIT_MASK_RGB565);
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uint32 RGB_HI_BITS_MASKx2 = (RED_HI_BIT_MASK_RGB565 |
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GREEN_HI_BIT_MASK_RGB565 |
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BLUE_HI_BIT_MASK_RGB565) << 1;
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uint32 RGB_REMOVE_LOW_BITS_MASK = ~RGB_LOW_BITS_MASK;
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uint32 FIRST_COLOR_MASK = FIRST_COLOR_MASK_RGB565;
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uint32 SECOND_COLOR_MASK = SECOND_COLOR_MASK_RGB565;
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uint32 THIRD_COLOR_MASK = THIRD_COLOR_MASK_RGB565;
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uint32 ALPHA_BITS_MASK = ALPHA_BITS_MASK_RGB565;
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uint32 FIRST_THIRD_COLOR_MASK = 0;
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uint32 TWO_LOW_BITS_MASK = 0;
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uint32 HIGH_BITS_SHIFTED_TWO_MASK = 0;
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uint32 current_graphic_format = RGB565;
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#endif
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uint8 GetBank = 0;
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struct SCheatData Cheat;
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volatile SoundStatus so;
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int32 Loop[16];
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int32 Echo[24000];
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int32 FilterTaps[8];
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int32 MixBuffer[SOUND_BUFFER_SIZE];
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int32 EchoBuffer[SOUND_BUFFER_SIZE];
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int32 DummyEchoBuffer[SOUND_BUFFER_SIZE];
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uint32 FIRIndex = 0;
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uint16 SignExtend [2] = {
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0x00, 0xff00
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};
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//modified per anomie Mode 5 findings
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int HDMA_ModeByteCounts [8] = {
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1, 2, 2, 4, 4, 4, 2, 4
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};
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uint16 BlackColourMap [256];
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uint16 DirectColourMaps [8][256];
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uint32 HeadMask [4] = {
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#ifdef LSB_FIRST
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0xffffffff, 0xffffff00, 0xffff0000, 0xff000000
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#else
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0xffffffff, 0x00ffffff, 0x0000ffff, 0x000000ff
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#endif
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};
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uint32 TailMask [5] = {
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#ifdef LSB_FIRST
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0x00000000, 0x000000ff, 0x0000ffff, 0x00ffffff, 0xffffffff
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#else
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0x00000000, 0xff000000, 0xffff0000, 0xffffff00, 0xffffffff
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#endif
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};
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START_EXTERN_C
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uint8 APUROM [64] =
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{
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0xCD,0xEF,0xBD,0xE8,0x00,0xC6,0x1D,0xD0,0xFC,0x8F,0xAA,0xF4,0x8F,
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0xBB,0xF5,0x78,0xCC,0xF4,0xD0,0xFB,0x2F,0x19,0xEB,0xF4,0xD0,0xFC,
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0x7E,0xF4,0xD0,0x0B,0xE4,0xF5,0xCB,0xF4,0xD7,0x00,0xFC,0xD0,0xF3,
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0xAB,0x01,0x10,0xEF,0x7E,0xF4,0x10,0xEB,0xBA,0xF6,0xDA,0x00,0xBA,
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0xF4,0xC4,0xF4,0xDD,0x5D,0xD0,0xDB,0x1F,0x00,0x00,0xC0,0xFF
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};
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#ifdef NETPLAY_SUPPORT
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struct SNetPlay NetPlay;
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#endif
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// Raw SPC700 instruction cycle lengths
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int32 S9xAPUCycleLengths [256] =
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{
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/* 0 1 2 3 4 5 6 7 8 9 A B C D E F */
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/* 00 */ 2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 5, 4, 5, 4, 6, 8,
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/* 10 */ 2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 6, 5, 2, 2, 4, 6,
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/* 20 */ 2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 5, 4, 5, 4, 5, 4,
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/* 30 */ 2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 6, 5, 2, 2, 3, 8,
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/* 40 */ 2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 4, 4, 5, 4, 6, 6,
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/* 50 */ 2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 4, 5, 2, 2, 4, 3,
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/* 60 */ 2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 4, 4, 5, 4, 5, 5,
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/* 70 */ 2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 5, 5, 2, 2, 3, 6,
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/* 80 */ 2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 5, 4, 5, 2, 4, 5,
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/* 90 */ 2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 5, 5, 2, 2,12, 5,
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/* A0 */ 3, 8, 4, 5, 3, 4, 3, 6, 2, 6, 4, 4, 5, 2, 4, 4,
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/* B0 */ 2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 5, 5, 2, 2, 3, 4,
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/* C0 */ 3, 8, 4, 5, 4, 5, 4, 7, 2, 5, 6, 4, 5, 2, 4, 9,
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/* D0 */ 2, 8, 4, 5, 5, 6, 6, 7, 4, 5, 5, 5, 2, 2, 6, 3,
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/* E0 */ 2, 8, 4, 5, 3, 4, 3, 6, 2, 4, 5, 3, 4, 3, 4, 3,
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/* F0 */ 2, 8, 4, 5, 4, 5, 5, 6, 3, 4, 5, 4, 2, 2, 4, 3
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};
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// Actual data used by CPU emulation, will be scaled by APUReset routine
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// to be relative to the 65c816 instruction lengths.
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int32 S9xAPUCycles [256] =
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{
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/* 0 1 2 3 4 5 6 7 8 9 A B C D E F */
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/* 00 */ 2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 5, 4, 5, 4, 6, 8,
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/* 10 */ 2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 6, 5, 2, 2, 4, 6,
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/* 20 */ 2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 5, 4, 5, 4, 5, 4,
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/* 30 */ 2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 6, 5, 2, 2, 3, 8,
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/* 40 */ 2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 4, 4, 5, 4, 6, 6,
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/* 50 */ 2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 4, 5, 2, 2, 4, 3,
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/* 60 */ 2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 4, 4, 5, 4, 5, 5,
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/* 70 */ 2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 5, 5, 2, 2, 3, 6,
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/* 80 */ 2, 8, 4, 5, 3, 4, 3, 6, 2, 6, 5, 4, 5, 2, 4, 5,
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/* 90 */ 2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 5, 5, 2, 2,12, 5,
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/* A0 */ 3, 8, 4, 5, 3, 4, 3, 6, 2, 6, 4, 4, 5, 2, 4, 4,
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/* B0 */ 2, 8, 4, 5, 4, 5, 5, 6, 5, 5, 5, 5, 2, 2, 3, 4,
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/* C0 */ 3, 8, 4, 5, 4, 5, 4, 7, 2, 5, 6, 4, 5, 2, 4, 9,
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/* D0 */ 2, 8, 4, 5, 5, 6, 6, 7, 4, 5, 5, 5, 2, 2, 6, 3,
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/* E0 */ 2, 8, 4, 5, 3, 4, 3, 6, 2, 4, 5, 3, 4, 3, 4, 3,
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/* F0 */ 2, 8, 4, 5, 4, 5, 5, 6, 3, 4, 5, 4, 2, 2, 4, 3
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};
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END_EXTERN_C
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