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Diffstat (limited to 'source/sa1cpu.cpp')
| -rw-r--r-- | source/sa1cpu.cpp | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/source/sa1cpu.cpp b/source/sa1cpu.cpp new file mode 100644 index 0000000..1532f57 --- /dev/null +++ b/source/sa1cpu.cpp @@ -0,0 +1,196 @@ +/******************************************************************************* + 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. +*******************************************************************************/ + +#include "snes9x.h" +#include "memmap.h" +#include "ppu.h" +#include "cpuexec.h" + +#include "sa1.h" +#define CPU SA1 +#define ICPU SA1 +#define Registers SA1Registers +#define S9xGetByte S9xSA1GetByte +#define S9xGetWord S9xSA1GetWord +#define S9xSetByte S9xSA1SetByte +#define S9xSetWord S9xSA1SetWord +#define S9xSetPCBase S9xSA1SetPCBase +#define S9xOpcodesM1X1 S9xSA1OpcodesM1X1 +#define S9xOpcodesM1X0 S9xSA1OpcodesM1X0 +#define S9xOpcodesM0X1 S9xSA1OpcodesM0X1 +#define S9xOpcodesM0X0 S9xSA1OpcodesM0X0 +#define S9xOpcodesE1 S9xSA1OpcodesE1 +#define S9xOpcode_IRQ S9xSA1Opcode_IRQ +#define S9xOpcode_NMI S9xSA1Opcode_NMI +#define S9xUnpackStatus S9xSA1UnpackStatus +#define S9xPackStatus S9xSA1PackStatus +#define S9xFixCycles S9xSA1FixCycles +#define Immediate8 SA1Immediate8 +#define Immediate16 SA1Immediate16 +#define Relative SA1Relative +#define RelativeLong SA1RelativeLong +#define AbsoluteIndexedIndirect SA1AbsoluteIndexedIndirect +#define AbsoluteIndirectLong SA1AbsoluteIndirectLong +#define AbsoluteIndirect SA1AbsoluteIndirect +#define Absolute SA1Absolute +#define AbsoluteLong SA1AbsoluteLong +#define Direct SA1Direct +#define DirectIndirectIndexed SA1DirectIndirectIndexed +#define DirectIndirectIndexedLong SA1DirectIndirectIndexedLong +#define DirectIndexedIndirect SA1DirectIndexedIndirect +#define DirectIndexedX SA1DirectIndexedX +#define DirectIndexedY SA1DirectIndexedY +#define AbsoluteIndexedX SA1AbsoluteIndexedX +#define AbsoluteIndexedY SA1AbsoluteIndexedY +#define AbsoluteLongIndexedX SA1AbsoluteLongIndexedX +#define DirectIndirect SA1DirectIndirect +#define DirectIndirectLong SA1DirectIndirectLong +#define StackRelative SA1StackRelative +#define StackRelativeIndirectIndexed SA1StackRelativeIndirectIndexed + +//#undef CPU_SHUTDOWN +#undef VAR_CYCLES +#define SA1_OPCODES + +#include "cpuops.cpp" + +void S9xSA1MainLoop () +{ + int i; + +#if 0 + if (SA1.Flags & NMI_FLAG) + { + SA1.Flags &= ~NMI_FLAG; + if (SA1.WaitingForInterrupt) + { + SA1.WaitingForInterrupt = FALSE; + SA1.PC++; + } + S9xSA1Opcode_NMI (); + } +#endif + if (SA1.Flags & IRQ_PENDING_FLAG) + { + if (SA1.IRQActive) + { + if (SA1.WaitingForInterrupt) + { + SA1.WaitingForInterrupt = FALSE; + SA1.PC++; + } + if (!SA1CheckFlag (IRQ)) + S9xSA1Opcode_IRQ (); + } + else + SA1.Flags &= ~IRQ_PENDING_FLAG; + } +#ifdef DEBUGGER + if (SA1.Flags & TRACE_FLAG) + { + for (i = 0; i < 3 && SA1.Executing; i++) + { + S9xSA1Trace (); +#ifdef CPU_SHUTDOWN + SA1.PCAtOpcodeStart = SA1.PC; +#endif + (*SA1.S9xOpcodes [*SA1.PC++].S9xOpcode) (); + } + } + else +#endif + for (i = 0; i < 3 && SA1.Executing; i++) + { +#ifdef CPU_SHUTDOWN + SA1.PCAtOpcodeStart = SA1.PC; +#endif + (*SA1.S9xOpcodes [*SA1.PC++].S9xOpcode) (); + } +} + |