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/*
* Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
*
* (c) Copyright 1996, 1997, 1998, 1999 Gary Henderson (gary@daniver.demon.co.uk) and
* Jerremy Koot (jkoot@snes9x.com)
*
* Super FX C emulator code
* (c) Copyright 1997, 1998, 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.
* DOS port code contains the works of other authors. See headers in
* individual files.
*
* Snes9x homepage: 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 long 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();
/* 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
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