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authorKitty Draper2011-03-05 21:39:25 -0500
committerKitty Draper2011-03-05 21:39:25 -0500
commitd40ae99422e118188a7f48055dc340c6aca022aa (patch)
tree83ab93f49fd9e66e43bcd824091ae1dbcaa0c173 /source/fxemu.h
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+/*******************************************************************************
+ 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
+