mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-11-30 22:44:22 +01:00
434 lines
11 KiB
C
434 lines
11 KiB
C
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/**********************************************************************************
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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) and
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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 Brad Jorsch (anomie@users.sourceforge.net),
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funkyass (funkyass@spam.shaw.ca),
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Kris Bleakley (codeviolation@hotmail.com),
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Nach (n-a-c-h@users.sourceforge.net), and
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zones (kasumitokoduck@yahoo.com)
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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 filter
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(c) Copyright 2003 Maxim Stepin (maxim@hiend3d.com)
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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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#ifndef _SNAPORIG_H_
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#define _SNAPORIG_H_
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#define ORIG_SNAPSHOT_MAGIC "#!snes96"
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#define ORIG_SNAPSHOT_VERSION 4
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EXTERN_C bool8 S9xLoadOrigSnapshot (const char *filename);
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struct SOrigCPUState{
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uint32 Flags;
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short Cycles_old;
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short NextEvent_old;
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uint8 CurrentFrame;
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uint8 FastROMSpeed_old_old;
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uint16 V_Counter_old;
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bool8 BranchSkip;
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bool8 NMIActive;
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bool8 IRQActive;
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bool8 WaitingForInterrupt;
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bool8 InDMA;
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uint8 WhichEvent;
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uint8 *PC;
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uint8 *PCBase;
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uint16 MemSpeed_old;
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uint16 MemSpeedx2_old;
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uint16 FastROMSpeed_old;
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bool8 FastDP;
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uint8 *PCAtOpcodeStart;
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uint8 *WaitAddress;
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uint32 WaitCounter;
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int32 Cycles;
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int32 NextEvent;
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int32 V_Counter;
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int32 MemSpeed;
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int32 MemSpeedx2;
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int32 FastROMSpeed;
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};
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struct SOrigAPU
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{
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uint32 Cycles;
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bool8 ShowROM;
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uint8 Flags;
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uint8 KeyedChannels;
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uint8 OutPorts [4];
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uint8 DSP [0x80];
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uint8 ExtraRAM [64];
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uint16 Timer [3];
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uint16 TimerTarget [3];
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bool8 TimerEnabled [3];
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bool8 TimerValueWritten [3];
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};
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typedef union
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{
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#ifdef LSB_FIRST
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struct { uint8 A, Y; } B;
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#else
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struct { uint8 Y, A; } B;
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#endif
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uint16 W;
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} OrigYAndA;
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struct SOrigAPURegisters{
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uint8 P;
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OrigYAndA YA;
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uint8 X;
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uint8 S;
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uint16 PC;
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};
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#define ORIG_MAX_BUFFER_SIZE (1024 * 4)
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#define NUM_CHANNELS 8
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typedef struct {
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int32 state;
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int32 type;
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short volume_left;
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short volume_right;
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uint32 frequency;
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uint32 count;
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signed short wave [ORIG_MAX_BUFFER_SIZE];
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bool8 loop;
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int32 envx;
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short left_vol_level;
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short right_vol_level;
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short envx_target;
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uint32 env_error;
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uint32 erate;
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int32 direction;
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uint32 attack_rate;
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uint32 decay_rate;
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uint32 sustain_rate;
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uint32 release_rate;
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uint32 sustain_level;
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signed short sample;
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signed short decoded [16];
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signed short previous [2];
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uint16 sample_number;
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bool8 last_block;
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bool8 needs_decode;
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uint32 block_pointer;
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uint32 sample_pointer;
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int32 *echo_buf_ptr;
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int32 mode;
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uint32 dummy [8];
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} OrigChannel;
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typedef struct
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{
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short master_volume_left;
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short master_volume_right;
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short echo_volume_left;
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short echo_volume_right;
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int32 echo_enable;
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int32 echo_feedback;
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int32 echo_ptr;
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int32 echo_buffer_size;
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int32 echo_write_enabled;
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int32 echo_channel_enable;
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int32 pitch_mod;
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// Just incase they are needed in the future, for snapshot compatibility.
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uint32 dummy [3];
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OrigChannel channels [NUM_CHANNELS];
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} SOrigSoundData;
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struct SOrigOBJ
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{
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short HPos;
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uint16 VPos;
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uint16 Name;
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uint8 VFlip;
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uint8 HFlip;
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uint8 Priority;
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uint8 Palette;
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uint8 Size;
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uint8 Prev;
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uint8 Next;
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};
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struct SOrigPPU {
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uint8 BGMode;
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uint8 BG3Priority;
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uint8 Brightness;
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struct {
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bool8 High;
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uint8 Increment;
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uint16 Address;
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uint16 Mask1;
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uint16 FullGraphicCount;
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uint16 Shift;
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} VMA;
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struct {
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uint8 TileSize;
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uint16 TileAddress;
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uint8 Width;
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uint8 Height;
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uint16 SCBase;
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uint16 VOffset;
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uint16 HOffset;
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bool8 ThroughMain;
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bool8 ThroughSub;
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uint8 BGSize;
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uint16 NameBase;
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uint16 SCSize;
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bool8 Addition;
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} BG [4];
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bool8 CGFLIP;
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uint16 CGDATA [256];
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uint8 FirstSprite;
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uint8 LastSprite;
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struct SOrigOBJ OBJ [129];
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uint8 OAMPriorityRotation;
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uint16 OAMAddr;
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uint8 OAMFlip;
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uint16 OAMTileAddress;
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uint16 IRQVBeamPos;
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uint16 IRQHBeamPos;
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uint16 VBeamPosLatched;
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uint16 HBeamPosLatched;
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uint8 HBeamFlip;
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uint8 VBeamFlip;
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uint8 HVBeamCounterLatched;
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short MatrixA;
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short MatrixB;
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short MatrixC;
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short MatrixD;
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short CentreX;
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short CentreY;
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uint8 Joypad1ButtonReadPos;
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uint8 Joypad2ButtonReadPos;
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uint8 CGADD;
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uint8 FixedColourRed;
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uint8 FixedColourGreen;
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uint8 FixedColourBlue;
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uint16 SavedOAMAddr;
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uint16 ScreenHeight;
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uint32 WRAM;
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uint8 BG_Forced;
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bool8 ForcedBlanking;
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bool8 OBJThroughMain;
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bool8 OBJThroughSub;
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uint8 OBJSizeSelect;
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uint8 OBJNameSelect_old;
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uint16 OBJNameBase;
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bool8 OBJAddition;
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uint8 OAMReadFlip;
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uint8 OAMData [512 + 32];
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bool8 VTimerEnabled;
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bool8 HTimerEnabled;
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short HTimerPosition;
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uint8 Mosaic;
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bool8 BGMosaic [4];
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bool8 Mode7HFlip;
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bool8 Mode7VFlip;
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uint8 Mode7Repeat;
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uint8 Window1Left;
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uint8 Window1Right;
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uint8 Window2Left;
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uint8 Window2Right;
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uint8 ClipCounts [6];
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uint8 ClipLeftEdges [3][6];
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uint8 ClipRightEdges [3][6];
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uint8 ClipWindowOverlapLogic [6];
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uint8 ClipWindow1Enable [6];
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uint8 ClipWindow2Enable [6];
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bool8 ClipWindow1Inside [6];
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bool8 ClipWindow2Inside [6];
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bool8 RecomputeClipWindows;
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uint8 CGFLIPRead;
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uint16 OBJNameSelect;
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bool8 Need16x8Mulitply;
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uint8 Joypad3ButtonReadPos;
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uint8 MouseSpeed[2];
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};
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struct SOrigDMA {
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bool8 TransferDirection;
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bool8 AAddressFixed;
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bool8 AAddressDecrement;
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uint8 TransferMode;
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uint8 ABank;
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uint16 AAddress;
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uint16 Address;
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uint8 BAddress;
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// General DMA only:
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uint16 TransferBytes;
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// H-DMA only:
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bool8 HDMAIndirectAddressing;
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uint16 IndirectAddress;
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uint8 IndirectBank;
|
||
|
|
uint8 Repeat;
|
||
|
|
uint8 LineCount;
|
||
|
|
uint8 FirstLine;
|
||
|
|
bool8 JustStarted;
|
||
|
|
};
|
||
|
|
|
||
|
|
typedef union
|
||
|
|
{
|
||
|
|
#ifdef LSB_FIRST
|
||
|
|
struct { uint8 l,h; } B;
|
||
|
|
#else
|
||
|
|
struct { uint8 h,l; } B;
|
||
|
|
#endif
|
||
|
|
uint16 W;
|
||
|
|
} OrigPair;
|
||
|
|
|
||
|
|
struct SOrigRegisters{
|
||
|
|
uint8 DB;
|
||
|
|
OrigPair P;
|
||
|
|
OrigPair A;
|
||
|
|
OrigPair D;
|
||
|
|
OrigPair S;
|
||
|
|
OrigPair X;
|
||
|
|
OrigPair Y;
|
||
|
|
PC_t PC;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|