mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-11-30 22:44:22 +01:00
260 lines
8.4 KiB
C++
260 lines
8.4 KiB
C++
|
/**********************************************************************************
|
||
|
|
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 2002 - 2004 Matthew Kendora
|
||
|
|
|
||
|
|
(c) Copyright 2002 - 2005 Peter Bortas (peter@bortas.org)
|
||
|
|
|
||
|
|
(c) Copyright 2004 - 2005 Joel Yliluoma (http://iki.fi/bisqwit/)
|
||
|
|
|
||
|
|
(c) Copyright 2001 - 2006 John Weidman (jweidman@slip.net)
|
||
|
|
|
||
|
|
(c) Copyright 2002 - 2006 Brad Jorsch (anomie@users.sourceforge.net),
|
||
|
|
funkyass (funkyass@spam.shaw.ca),
|
||
|
|
Kris Bleakley (codeviolation@hotmail.com),
|
||
|
|
Nach (n-a-c-h@users.sourceforge.net), and
|
||
|
|
zones (kasumitokoduck@yahoo.com)
|
||
|
|
|
||
|
|
BS-X C emulator code
|
||
|
|
(c) Copyright 2005 - 2006 Dreamer Nom,
|
||
|
|
zones
|
||
|
|
|
||
|
|
C4 x86 assembler and some C emulation code
|
||
|
|
(c) Copyright 2000 - 2003 _Demo_ (_demo_@zsnes.com),
|
||
|
|
Nach,
|
||
|
|
zsKnight (zsknight@zsnes.com)
|
||
|
|
|
||
|
|
C4 C++ code
|
||
|
|
(c) Copyright 2003 - 2006 Brad Jorsch,
|
||
|
|
Nach
|
||
|
|
|
||
|
|
DSP-1 emulator code
|
||
|
|
(c) Copyright 1998 - 2006 _Demo_,
|
||
|
|
Andreas Naive (andreasnaive@gmail.com)
|
||
|
|
Gary Henderson,
|
||
|
|
Ivar (ivar@snes9x.com),
|
||
|
|
John Weidman,
|
||
|
|
Kris Bleakley,
|
||
|
|
Matthew Kendora,
|
||
|
|
Nach,
|
||
|
|
neviksti (neviksti@hotmail.com)
|
||
|
|
|
||
|
|
DSP-2 emulator code
|
||
|
|
(c) Copyright 2003 John Weidman,
|
||
|
|
Kris Bleakley,
|
||
|
|
Lord Nightmare (lord_nightmare@users.sourceforge.net),
|
||
|
|
Matthew Kendora,
|
||
|
|
neviksti
|
||
|
|
|
||
|
|
|
||
|
|
DSP-3 emulator code
|
||
|
|
(c) Copyright 2003 - 2006 John Weidman,
|
||
|
|
Kris Bleakley,
|
||
|
|
Lancer,
|
||
|
|
z80 gaiden
|
||
|
|
|
||
|
|
DSP-4 emulator code
|
||
|
|
(c) Copyright 2004 - 2006 Dreamer Nom,
|
||
|
|
John Weidman,
|
||
|
|
Kris Bleakley,
|
||
|
|
Nach,
|
||
|
|
z80 gaiden
|
||
|
|
|
||
|
|
OBC1 emulator code
|
||
|
|
(c) Copyright 2001 - 2004 zsKnight,
|
||
|
|
pagefault (pagefault@zsnes.com),
|
||
|
|
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,
|
||
|
|
Dark Force
|
||
|
|
|
||
|
|
S-DD1 C emulator code
|
||
|
|
(c) Copyright 2003 Brad Jorsch with research by
|
||
|
|
Andreas Naive,
|
||
|
|
John Weidman
|
||
|
|
|
||
|
|
S-RTC C emulator code
|
||
|
|
(c) Copyright 2001-2006 byuu,
|
||
|
|
John Weidman
|
||
|
|
|
||
|
|
ST010 C++ emulator code
|
||
|
|
(c) Copyright 2003 Feather,
|
||
|
|
John Weidman,
|
||
|
|
Kris Bleakley,
|
||
|
|
Matthew Kendora
|
||
|
|
|
||
|
|
Super FX x86 assembler emulator code
|
||
|
|
(c) Copyright 1998 - 2003 _Demo_,
|
||
|
|
pagefault,
|
||
|
|
zsKnight,
|
||
|
|
|
||
|
|
Super FX C emulator code
|
||
|
|
(c) Copyright 1997 - 1999 Ivar,
|
||
|
|
Gary Henderson,
|
||
|
|
John Weidman
|
||
|
|
|
||
|
|
Sound DSP emulator code is derived from SNEeSe and OpenSPC:
|
||
|
|
(c) Copyright 1998 - 2003 Brad Martin
|
||
|
|
(c) Copyright 1998 - 2006 Charles Bilyue'
|
||
|
|
|
||
|
|
SH assembler code partly based on x86 assembler code
|
||
|
|
(c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se)
|
||
|
|
|
||
|
|
2xSaI filter
|
||
|
|
(c) Copyright 1999 - 2001 Derek Liauw Kie Fa
|
||
|
|
|
||
|
|
HQ2x filter
|
||
|
|
(c) Copyright 2003 Maxim Stepin (maxim@hiend3d.com)
|
||
|
|
|
||
|
|
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/or 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 or it's derivatives.
|
||
|
|
|
||
|
|
Snes9x is freeware for PERSONAL USE only. Commercial users should
|
||
|
|
seek permission of the copyright holders first. Commercial use includes,
|
||
|
|
but is not limited to, charging money for Snes9x or software derived from
|
||
|
|
Snes9x, including Snes9x or derivatives in commercial game bundles, and/or
|
||
|
|
using Snes9x as a promotion for your commercial product.
|
||
|
|
|
||
|
|
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 OpenBus SA1OpenBus
|
||
|
|
#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 S9xOpcodesSlow S9xSA1OpcodesSlow
|
||
|
|
#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
|
||
|
|
#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;
|
||
|
|
SA1Registers.PCw++;
|
||
|
|
}
|
||
|
|
S9xSA1Opcode_NMI ();
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
if (SA1.Flags & IRQ_PENDING_FLAG)
|
||
|
|
{
|
||
|
|
if (SA1.IRQActive)
|
||
|
|
{
|
||
|
|
if (SA1.WaitingForInterrupt)
|
||
|
|
{
|
||
|
|
SA1.WaitingForInterrupt = FALSE;
|
||
|
|
SA1Registers.PCw++;
|
||
|
|
}
|
||
|
|
if (!SA1CheckFlag (IRQ))
|
||
|
|
S9xSA1Opcode_IRQ ();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
SA1.Flags &= ~IRQ_PENDING_FLAG;
|
||
|
|
}
|
||
|
|
for (i = 0; i < 3 && SA1.Executing; i++)
|
||
|
|
{
|
||
|
|
#ifdef DEBUGGER
|
||
|
|
if (SA1.Flags & TRACE_FLAG){ S9xSA1Trace(); }
|
||
|
|
#endif
|
||
|
|
#ifdef CPU_SHUTDOWN
|
||
|
|
SA1.PBPCAtOpcodeStart = SA1Registers.PBPC;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
register uint8 Op;
|
||
|
|
register struct SOpcodes *Opcodes;
|
||
|
|
if(SA1.PCBase){
|
||
|
|
SA1OpenBus = Op = SA1.PCBase[Registers.PCw];
|
||
|
|
Opcodes = SA1.S9xOpcodes;
|
||
|
|
} else {
|
||
|
|
Op = S9xSA1GetByte(Registers.PBPC);
|
||
|
|
Opcodes = S9xOpcodesSlow;
|
||
|
|
}
|
||
|
|
if((SA1Registers.PCw&MEMMAP_MASK)+SA1.S9xOpLengths[Op]>=MEMMAP_BLOCK_SIZE){
|
||
|
|
uint32 oldPC = SA1Registers.PBPC;
|
||
|
|
S9xSA1SetPCBase(SA1Registers.PBPC);
|
||
|
|
SA1Registers.PBPC = oldPC;
|
||
|
|
Opcodes = S9xSA1OpcodesSlow;
|
||
|
|
}
|
||
|
|
Registers.PCw++;
|
||
|
|
(*Opcodes[Op].S9xOpcode) ();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|