mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-12-24 18:21:50 +01:00
Added SA-1 NMI and fixed its override mode. (zones)
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dborth
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commit
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@ -1,299 +1,303 @@
|
||||
/***********************************************************************************
|
||||
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
|
||||
|
||||
(c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com),
|
||||
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 funkyass (funkyass@spam.shaw.ca),
|
||||
Kris Bleakley (codeviolation@hotmail.com)
|
||||
|
||||
(c) Copyright 2002 - 2010 Brad Jorsch (anomie@users.sourceforge.net),
|
||||
Nach (n-a-c-h@users.sourceforge.net),
|
||||
zones (kasumitokoduck@yahoo.com)
|
||||
|
||||
(c) Copyright 2006 - 2007 nitsuja
|
||||
|
||||
(c) Copyright 2009 - 2010 BearOso,
|
||||
OV2
|
||||
|
||||
|
||||
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,
|
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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 used in 1.39-1.51
|
||||
(c) Copyright 2002 Matthew Kendora with research by
|
||||
zsKnight,
|
||||
John Weidman,
|
||||
Dark Force
|
||||
|
||||
SPC7110 and RTC C++ emulator code used in 1.52+
|
||||
(c) Copyright 2009 byuu,
|
||||
neviksti
|
||||
|
||||
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 emulator code used in 1.5-1.51
|
||||
(c) Copyright 1998 - 2003 Brad Martin
|
||||
(c) Copyright 1998 - 2006 Charles Bilyue'
|
||||
|
||||
Sound emulator code used in 1.52+
|
||||
(c) Copyright 2004 - 2007 Shay Green (gblargg@gmail.com)
|
||||
|
||||
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, HQ3x, HQ4x filters
|
||||
(c) Copyright 2003 Maxim Stepin (maxim@hiend3d.com)
|
||||
|
||||
NTSC filter
|
||||
(c) Copyright 2006 - 2007 Shay Green
|
||||
|
||||
GTK+ GUI code
|
||||
(c) Copyright 2004 - 2010 BearOso
|
||||
|
||||
Win32 GUI code
|
||||
(c) Copyright 2003 - 2006 blip,
|
||||
funkyass,
|
||||
Matthew Kendora,
|
||||
Nach,
|
||||
nitsuja
|
||||
(c) Copyright 2009 - 2010 OV2
|
||||
|
||||
Mac OS GUI code
|
||||
(c) Copyright 1998 - 2001 John Stiles
|
||||
(c) Copyright 2001 - 2010 zones
|
||||
|
||||
|
||||
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"
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#include "memmap.h"
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|
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#define CPU SA1
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#define ICPU SA1
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#define Registers SA1Registers
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#define OpenBus SA1OpenBus
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#define S9xGetByte S9xSA1GetByte
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#define S9xGetWord S9xSA1GetWord
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#define S9xSetByte S9xSA1SetByte
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#define S9xSetWord S9xSA1SetWord
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#define S9xSetPCBase S9xSA1SetPCBase
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#define S9xOpcodesM1X1 S9xSA1OpcodesM1X1
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#define S9xOpcodesM1X0 S9xSA1OpcodesM1X0
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#define S9xOpcodesM0X1 S9xSA1OpcodesM0X1
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#define S9xOpcodesM0X0 S9xSA1OpcodesM0X0
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#define S9xOpcodesE1 S9xSA1OpcodesE1
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#define S9xOpcodesSlow S9xSA1OpcodesSlow
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#define S9xOpcode_IRQ S9xSA1Opcode_IRQ
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#define S9xOpcode_NMI S9xSA1Opcode_NMI
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#define S9xUnpackStatus S9xSA1UnpackStatus
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#define S9xPackStatus S9xSA1PackStatus
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#define S9xFixCycles S9xSA1FixCycles
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#define Immediate8 SA1Immediate8
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#define Immediate16 SA1Immediate16
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#define Relative SA1Relative
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#define RelativeLong SA1RelativeLong
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#define Absolute SA1Absolute
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#define AbsoluteLong SA1AbsoluteLong
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#define AbsoluteIndirect SA1AbsoluteIndirect
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#define AbsoluteIndirectLong SA1AbsoluteIndirectLong
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#define AbsoluteIndexedIndirect SA1AbsoluteIndexedIndirect
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#define Direct SA1Direct
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#define DirectIndirectIndexed SA1DirectIndirectIndexed
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#define DirectIndirectIndexedLong SA1DirectIndirectIndexedLong
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||||
#define DirectIndexedIndirect SA1DirectIndexedIndirect
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||||
#define DirectIndexedX SA1DirectIndexedX
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||||
#define DirectIndexedY SA1DirectIndexedY
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||||
#define AbsoluteIndexedX SA1AbsoluteIndexedX
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||||
#define AbsoluteIndexedY SA1AbsoluteIndexedY
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||||
#define AbsoluteLongIndexedX SA1AbsoluteLongIndexedX
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#define DirectIndirect SA1DirectIndirect
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#define DirectIndirectLong SA1DirectIndirectLong
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#define StackRelative SA1StackRelative
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#define StackRelativeIndirectIndexed SA1StackRelativeIndirectIndexed
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||||
//#undef CPU_SHUTDOWN
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#define SA1_OPCODES
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#include "cpuops.cpp"
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void S9xSA1MainLoop (void)
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{
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#if 0
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if (SA1.Flags & NMI_FLAG)
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||||
{
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SA1.Flags &= ~NMI_FLAG;
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if (SA1.WaitingForInterrupt)
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||||
{
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||||
SA1.WaitingForInterrupt = FALSE;
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SA1Registers.PCw++;
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}
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S9xSA1Opcode_NMI();
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}
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||||
#endif
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||||
|
||||
if (SA1.Flags & IRQ_FLAG)
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||||
{
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||||
if (SA1.IRQActive)
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||||
{
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||||
if (SA1.WaitingForInterrupt)
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||||
{
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||||
SA1.WaitingForInterrupt = FALSE;
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SA1Registers.PCw++;
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}
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||||
|
||||
if (!SA1CheckFlag(IRQ))
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S9xSA1Opcode_IRQ();
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||||
}
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||||
else
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||||
SA1.Flags &= ~IRQ_FLAG;
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||||
}
|
||||
|
||||
for (int i = 0; i < 3 && SA1.Executing; i++)
|
||||
{
|
||||
#ifdef DEBUGGER
|
||||
if (SA1.Flags & TRACE_FLAG)
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||||
S9xSA1Trace();
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||||
#endif
|
||||
|
||||
#ifdef CPU_SHUTDOWN
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SA1.PBPCAtOpcodeStart = SA1Registers.PBPC;
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||||
#endif
|
||||
|
||||
register uint8 Op;
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||||
register struct SOpcodes *Opcodes;
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|
||||
if (SA1.PCBase)
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||||
{
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SA1OpenBus = Op = SA1.PCBase[Registers.PCw];
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Opcodes = SA1.S9xOpcodes;
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||||
}
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||||
else
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||||
{
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Op = S9xSA1GetByte(Registers.PBPC);
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Opcodes = S9xOpcodesSlow;
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||||
}
|
||||
|
||||
if ((SA1Registers.PCw & MEMMAP_MASK) + SA1.S9xOpLengths[Op] >= MEMMAP_BLOCK_SIZE)
|
||||
{
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||||
uint32 oldPC = SA1Registers.PBPC;
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||||
S9xSA1SetPCBase(SA1Registers.PBPC);
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||||
SA1Registers.PBPC = oldPC;
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||||
Opcodes = S9xSA1OpcodesSlow;
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||||
}
|
||||
|
||||
Registers.PCw++;
|
||||
(*Opcodes[Op].S9xOpcode)();
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||||
}
|
||||
}
|
||||
/***********************************************************************************
|
||||
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
|
||||
|
||||
(c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com),
|
||||
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 funkyass (funkyass@spam.shaw.ca),
|
||||
Kris Bleakley (codeviolation@hotmail.com)
|
||||
|
||||
(c) Copyright 2002 - 2010 Brad Jorsch (anomie@users.sourceforge.net),
|
||||
Nach (n-a-c-h@users.sourceforge.net),
|
||||
zones (kasumitokoduck@yahoo.com)
|
||||
|
||||
(c) Copyright 2006 - 2007 nitsuja
|
||||
|
||||
(c) Copyright 2009 - 2010 BearOso,
|
||||
OV2
|
||||
|
||||
|
||||
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 used in 1.39-1.51
|
||||
(c) Copyright 2002 Matthew Kendora with research by
|
||||
zsKnight,
|
||||
John Weidman,
|
||||
Dark Force
|
||||
|
||||
SPC7110 and RTC C++ emulator code used in 1.52+
|
||||
(c) Copyright 2009 byuu,
|
||||
neviksti
|
||||
|
||||
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 emulator code used in 1.5-1.51
|
||||
(c) Copyright 1998 - 2003 Brad Martin
|
||||
(c) Copyright 1998 - 2006 Charles Bilyue'
|
||||
|
||||
Sound emulator code used in 1.52+
|
||||
(c) Copyright 2004 - 2007 Shay Green (gblargg@gmail.com)
|
||||
|
||||
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, HQ3x, HQ4x filters
|
||||
(c) Copyright 2003 Maxim Stepin (maxim@hiend3d.com)
|
||||
|
||||
NTSC filter
|
||||
(c) Copyright 2006 - 2007 Shay Green
|
||||
|
||||
GTK+ GUI code
|
||||
(c) Copyright 2004 - 2010 BearOso
|
||||
|
||||
Win32 GUI code
|
||||
(c) Copyright 2003 - 2006 blip,
|
||||
funkyass,
|
||||
Matthew Kendora,
|
||||
Nach,
|
||||
nitsuja
|
||||
(c) Copyright 2009 - 2010 OV2
|
||||
|
||||
Mac OS GUI code
|
||||
(c) Copyright 1998 - 2001 John Stiles
|
||||
(c) Copyright 2001 - 2010 zones
|
||||
|
||||
|
||||
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"
|
||||
|
||||
#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 Absolute SA1Absolute
|
||||
#define AbsoluteLong SA1AbsoluteLong
|
||||
#define AbsoluteIndirect SA1AbsoluteIndirect
|
||||
#define AbsoluteIndirectLong SA1AbsoluteIndirectLong
|
||||
#define AbsoluteIndexedIndirect SA1AbsoluteIndexedIndirect
|
||||
#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 (void)
|
||||
{
|
||||
if (SA1.Flags & NMI_FLAG)
|
||||
{
|
||||
if (Memory.FillRAM[0x2200] & 0x10)
|
||||
{
|
||||
SA1.Flags &= ~NMI_FLAG;
|
||||
Memory.FillRAM[0x2301] |= 0x10;
|
||||
|
||||
if (SA1.WaitingForInterrupt)
|
||||
{
|
||||
SA1.WaitingForInterrupt = FALSE;
|
||||
SA1Registers.PCw++;
|
||||
}
|
||||
|
||||
S9xSA1Opcode_NMI();
|
||||
}
|
||||
}
|
||||
|
||||
if (SA1.Flags & IRQ_FLAG)
|
||||
{
|
||||
if (SA1.IRQActive)
|
||||
{
|
||||
if (SA1.WaitingForInterrupt)
|
||||
{
|
||||
SA1.WaitingForInterrupt = FALSE;
|
||||
SA1Registers.PCw++;
|
||||
}
|
||||
|
||||
if (!SA1CheckFlag(IRQ))
|
||||
S9xSA1Opcode_IRQ();
|
||||
}
|
||||
else
|
||||
SA1.Flags &= ~IRQ_FLAG;
|
||||
}
|
||||
|
||||
for (int 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)();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user