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Diffstat (limited to 'source/fxemu.h')
-rw-r--r-- | source/fxemu.h | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/source/fxemu.h b/source/fxemu.h new file mode 100644 index 0000000..270ea5c --- /dev/null +++ b/source/fxemu.h @@ -0,0 +1,177 @@ +/******************************************************************************* + 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. +*******************************************************************************/ +#ifndef _FXEMU_H_ +#define _FXEMU_H_ 1 + +/* Types used by structures and code */ +#ifndef snes9x_types_defined +#define snes9x_types_defined + +typedef unsigned char uint8; +typedef unsigned short uint16; +typedef unsigned int uint32; +typedef unsigned char bool8; +typedef signed char int8; +typedef short int16; +typedef int int32; +#endif + +#ifndef TRUE +#define TRUE 1 +#endif + +#ifndef FALSE +#define FALSE 0 +#endif + +/* The FxInfo_s structure, the link between the FxEmulator and the Snes Emulator */ +struct FxInit_s +{ + uint32 vFlags; + uint8 * pvRegisters; /* 768 bytes located in the memory at address 0x3000 */ + uint32 nRamBanks; /* Number of 64kb-banks in GSU-RAM/BackupRAM (banks 0x70-0x73) */ + uint8 * pvRam; /* Pointer to GSU-RAM */ + uint32 nRomBanks; /* Number of 32kb-banks in Cart-ROM */ + uint8 * pvRom; /* Pointer to Cart-ROM */ +}; + +/* Reset the FxChip */ +extern void FxReset(struct FxInit_s *psFxInfo); + +/* Execute until the next stop instruction */ +extern int FxEmulate(uint32 nInstructions); + +/* Write access to the cache */ +extern void FxCacheWriteAccess(uint16 vAddress); +extern void FxFlushCache(); /* Callled when the G flag in SFR is set to zero */ + +/* Breakpoint */ +extern void FxBreakPointSet(uint32 vAddress); +extern void FxBreakPointClear(); + +/* Step by step execution */ +extern int FxStepOver(uint32 nInstructions); + +/* Errors */ +extern int FxGetErrorCode(); +extern int FxGetIllegalAddress(); + +/* Access to internal registers */ +extern uint32 FxGetColorRegister(); +extern uint32 FxGetPlotOptionRegister(); +extern uint32 FxGetSourceRegisterIndex(); +extern uint32 FxGetDestinationRegisterIndex(); + +/* Get string for opcode currently in the pipe */ +extern void FxPipeString(char * pvString); + +/* Get the byte currently in the pipe */ +extern uint8 FxPipe(); + +/* SCBR write seen. We need to update our cached screen pointers */ +extern void fx_dirtySCBR (void); + +/* Update RamBankReg and RAM Bank pointer */ +extern void fx_updateRamBank(uint8 Byte); + +/* Option flags */ +#define FX_FLAG_ADDRESS_CHECKING 0x01 +#define FX_FLAG_ROM_BUFFER 0x02 + +/* Return codes from FxEmulate(), FxStepInto() or FxStepOver() */ +#define FX_BREAKPOINT -1 +#define FX_ERROR_ILLEGAL_ADDRESS -2 + +/* Return the number of bytes in an opcode */ +#define OPCODE_BYTES(op) ((((op)>=0x05&&(op)<=0xf)||((op)>=0xa0&&(op)<=0xaf))?2:(((op)>=0xf0)?3:1)) + +extern void fx_computeScreenPointers (); + +#endif + |