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Diffstat (limited to 'src/snaporig.h')
| -rw-r--r-- | src/snaporig.h | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/src/snaporig.h b/src/snaporig.h new file mode 100644 index 0000000..b83a71f --- /dev/null +++ b/src/snaporig.h @@ -0,0 +1,330 @@ +/* + * Snes9x - Portable Super Nintendo Entertainment System (TM) emulator. + * + * (c) Copyright 1996 - 2001 Gary Henderson (gary.henderson@ntlworld.com) and + * Jerremy Koot (jkoot@snes9x.com) + * + * Super FX C emulator code + * (c) Copyright 1997 - 1999 Ivar (ivar@snes9x.com) and + * Gary Henderson. + * Super FX assembler emulator code (c) Copyright 1998 zsKnight and _Demo_. + * + * DSP1 emulator code (c) Copyright 1998 Ivar, _Demo_ and Gary Henderson. + * C4 asm and some C emulation code (c) Copyright 2000 zsKnight and _Demo_. + * C4 C code (c) Copyright 2001 Gary Henderson (gary.henderson@ntlworld.com). + * + * DOS port code 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. + */ +#ifndef _SNAPORIG_H_ +#define _SNAPORIG_H_ + +#define ORIG_SNAPSHOT_MAGIC "#!snes96" +#define ORIG_SNAPSHOT_VERSION 4 + +EXTERN_C bool8_32 S9xLoadOrigSnapshot (const char *filename); + +struct SOrigCPUState{ + uint32 Flags; + short Cycles_old; + short NextEvent_old; + uint8 CurrentFrame; + uint8 FastROMSpeed_old_old; + uint16 V_Counter_old; + bool8_32 BranchSkip; + bool8_32 NMIActive; + bool8_32 IRQActive; + bool8_32 WaitingForInterrupt; + bool8_32 InDMA; + uint8 WhichEvent; + uint8 *PC; + uint8 *PCBase; + uint16 MemSpeed_old; + uint16 MemSpeedx2_old; + uint16 FastROMSpeed_old; + bool8_32 FastDP; + uint8 *PCAtOpcodeStart; + uint8 *WaitAddress; + uint32 WaitCounter; + long Cycles; + long NextEvent; + long V_Counter; + long MemSpeed; + long MemSpeedx2; + long FastROMSpeed; +}; + +struct SOrigAPU +{ + uint32 Cycles; + bool8_32 ShowROM; + uint8 Flags; + uint8 KeyedChannels; + uint8 OutPorts [4]; + uint8 DSP [0x80]; + uint8 ExtraRAM [64]; + uint16 Timer [3]; + uint16 TimerTarget [3]; + bool8_32 TimerEnabled [3]; + bool8_32 TimerValueWritten [3]; +}; + +typedef union +{ +#ifdef LSB_FIRST + struct { uint8 A, Y; } B; +#else + struct { uint8 Y, A; } B; +#endif + uint16 W; +} OrigYAndA; + +struct SOrigAPURegisters{ + uint8 P; + OrigYAndA YA; + uint8 X; + uint8 S; + uint16 PC; +}; + +#define ORIG_MAX_BUFFER_SIZE (1024 * 4) +#define NUM_CHANNELS 8 + +typedef struct { + int state; + int type; + short volume_left; + short volume_right; + int frequency; + int count; + signed short wave [ORIG_MAX_BUFFER_SIZE]; + bool8_32 loop; + int envx; + short left_vol_level; + short right_vol_level; + short envx_target; + unsigned long int env_error; + unsigned long erate; + int direction; + unsigned long attack_rate; + unsigned long decay_rate; + unsigned long sustain_rate; + unsigned long release_rate; + unsigned long sustain_level; + signed short sample; + signed short decoded [16]; + signed short previous [2]; + uint16 sample_number; + bool8_32 last_block; + bool8_32 needs_decode; + uint32 block_pointer; + uint32 sample_pointer; + int *echo_buf_ptr; + int mode; + uint32 dummy [8]; +} OrigChannel; + +typedef struct +{ + short master_volume_left; + short master_volume_right; + short echo_volume_left; + short echo_volume_right; + int echo_enable; + int echo_feedback; + int echo_ptr; + int echo_buffer_size; + int echo_write_enabled; + int echo_channel_enable; + int pitch_mod; + // Just incase they are needed in the future, for snapshot compatibility. + uint32 dummy [3]; + OrigChannel channels [NUM_CHANNELS]; +} SOrigSoundData; + +struct SOrigOBJ +{ + short HPos; + uint16 VPos; + uint16 Name; + uint8 VFlip; + uint8 HFlip; + uint8 Priority; + uint8 Palette; + uint8 Size; + uint8 Prev; + uint8 Next; +}; + +struct SOrigPPU { + uint8 BGMode; + uint8 BG3Priority; + uint8 Brightness; + + struct { + bool8_32 High; + uint8 Increment; + uint16 Address; + uint16 Mask1; + uint16 FullGraphicCount; + uint16 Shift; + } VMA; + + struct { + uint8 TileSize; + uint16 TileAddress; + uint8 Width; + uint8 Height; + uint16 SCBase; + uint16 VOffset; + uint16 HOffset; + bool8_32 ThroughMain; + bool8_32 ThroughSub; + uint8 BGSize; + uint16 NameBase; + uint16 SCSize; + bool8_32 Addition; + } BG [4]; + + bool8_32 CGFLIP; + uint16 CGDATA [256]; + uint8 FirstSprite; + uint8 LastSprite; + struct SOrigOBJ OBJ [129]; + uint8 OAMPriorityRotation; + uint16 OAMAddr; + + uint8 OAMFlip; + uint16 OAMTileAddress; + uint16 IRQVBeamPos; + uint16 IRQHBeamPos; + uint16 VBeamPosLatched; + uint16 HBeamPosLatched; + + uint8 HBeamFlip; + uint8 VBeamFlip; + uint8 HVBeamCounterLatched; + + short MatrixA; + short MatrixB; + short MatrixC; + short MatrixD; + short CentreX; + short CentreY; + uint8 Joypad1ButtonReadPos; + uint8 Joypad2ButtonReadPos; + + uint8 CGADD; + uint8 FixedColourRed; + uint8 FixedColourGreen; + uint8 FixedColourBlue; + uint16 SavedOAMAddr; + uint16 ScreenHeight; + uint32 WRAM; + uint8 BG_Forced; + bool8_32 ForcedBlanking; + bool8_32 OBJThroughMain; + bool8_32 OBJThroughSub; + uint8 OBJSizeSelect; + uint8 OBJNameSelect_old; + uint16 OBJNameBase; + bool8_32 OBJAddition; + uint8 OAMReadFlip; + uint8 OAMData [512 + 32]; + bool8_32 VTimerEnabled; + bool8_32 HTimerEnabled; + short HTimerPosition; + uint8 Mosaic; + bool8_32 BGMosaic [4]; + bool8_32 Mode7HFlip; + bool8_32 Mode7VFlip; + uint8 Mode7Repeat; + uint8 Window1Left; + uint8 Window1Right; + uint8 Window2Left; + uint8 Window2Right; + uint8 ClipCounts [6]; + uint8 ClipLeftEdges [3][6]; + uint8 ClipRightEdges [3][6]; + uint8 ClipWindowOverlapLogic [6]; + uint8 ClipWindow1Enable [6]; + uint8 ClipWindow2Enable [6]; + bool8_32 ClipWindow1Inside [6]; + bool8_32 ClipWindow2Inside [6]; + bool8_32 RecomputeClipWindows; + uint8 CGFLIPRead; + uint16 OBJNameSelect; + bool8_32 Need16x8Mulitply; + uint8 Joypad3ButtonReadPos; + uint8 MouseSpeed[2]; +}; + +struct SOrigDMA { + bool8_32 TransferDirection; + bool8_32 AAddressFixed; + bool8_32 AAddressDecrement; + uint8 TransferMode; + + uint8 ABank; + uint16 AAddress; + uint16 Address; + uint8 BAddress; + + // General DMA only: + uint16 TransferBytes; + + // H-DMA only: + bool8_32 HDMAIndirectAddressing; + uint16 IndirectAddress; + uint8 IndirectBank; + uint8 Repeat; + uint8 LineCount; + uint8 FirstLine; + bool8_32 JustStarted; +}; + +typedef union +{ +#ifdef LSB_FIRST + struct { uint8 l,h; } B; +#else + struct { uint8 h,l; } B; +#endif + uint16 W; +} OrigPair; + +struct SOrigRegisters{ + uint8 PB; + uint8 DB; + OrigPair P; + OrigPair A; + OrigPair D; + OrigPair S; + OrigPair X; + OrigPair Y; + uint16 PC; +}; + +#endif |