mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-11-24 19:46:58 +01:00
708 lines
18 KiB
C
708 lines
18 KiB
C
/***********************************************************************************
|
|
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),
|
|
|
|
(c) Copyright 2002 - 2011 zones (kasumitokoduck@yahoo.com)
|
|
|
|
(c) Copyright 2006 - 2007 nitsuja
|
|
|
|
(c) Copyright 2009 - 2018 BearOso,
|
|
OV2
|
|
|
|
(c) Copyright 2017 qwertymodo
|
|
|
|
(c) Copyright 2011 - 2017 Hans-Kristian Arntzen,
|
|
Daniel De Matteis
|
|
(Under no circumstances will commercial rights be given)
|
|
|
|
|
|
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)
|
|
|
|
S-SMP emulator code used in 1.54+
|
|
(c) Copyright 2016 byuu
|
|
|
|
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 - 2018 BearOso
|
|
|
|
Win32 GUI code
|
|
(c) Copyright 2003 - 2006 blip,
|
|
funkyass,
|
|
Matthew Kendora,
|
|
Nach,
|
|
nitsuja
|
|
(c) Copyright 2009 - 2018 OV2
|
|
|
|
Mac OS GUI code
|
|
(c) Copyright 1998 - 2001 John Stiles
|
|
(c) Copyright 2001 - 2011 zones
|
|
|
|
Libretro port
|
|
(c) Copyright 2011 - 2017 Hans-Kristian Arntzen,
|
|
Daniel De Matteis
|
|
(Under no circumstances will commercial rights be given)
|
|
|
|
|
|
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.
|
|
***********************************************************************************/
|
|
|
|
|
|
#ifndef _CPUADDR_H_
|
|
#define _CPUADDR_H_
|
|
|
|
typedef enum
|
|
{
|
|
NONE = 0,
|
|
READ = 1,
|
|
WRITE = 2,
|
|
MODIFY = 3,
|
|
JUMP = 5,
|
|
JSR = 8
|
|
} AccessMode;
|
|
|
|
static inline uint8 Immediate8Slow (AccessMode a)
|
|
{
|
|
uint8 val = S9xGetByte(Registers.PBPC);
|
|
if (a & READ)
|
|
OpenBus = val;
|
|
Registers.PCw++;
|
|
|
|
return (val);
|
|
}
|
|
|
|
static inline uint8 Immediate8 (AccessMode a)
|
|
{
|
|
uint8 val = CPU.PCBase[Registers.PCw];
|
|
if (a & READ)
|
|
OpenBus = val;
|
|
AddCycles(CPU.MemSpeed);
|
|
Registers.PCw++;
|
|
|
|
return (val);
|
|
}
|
|
|
|
static inline uint16 Immediate16Slow (AccessMode a)
|
|
{
|
|
uint16 val = S9xGetWord(Registers.PBPC, WRAP_BANK);
|
|
if (a & READ)
|
|
OpenBus = (uint8) (val >> 8);
|
|
Registers.PCw += 2;
|
|
|
|
return (val);
|
|
}
|
|
|
|
static inline uint16 Immediate16 (AccessMode a)
|
|
{
|
|
uint16 val = READ_WORD(CPU.PCBase + Registers.PCw);
|
|
if (a & READ)
|
|
OpenBus = (uint8) (val >> 8);
|
|
AddCycles(CPU.MemSpeedx2);
|
|
Registers.PCw += 2;
|
|
|
|
return (val);
|
|
}
|
|
|
|
static inline uint32 RelativeSlow (AccessMode a) // branch $xx
|
|
{
|
|
int8 offset = Immediate8Slow(a);
|
|
|
|
return ((int16) Registers.PCw + offset) & 0xffff;
|
|
}
|
|
|
|
static inline uint32 Relative (AccessMode a) // branch $xx
|
|
{
|
|
int8 offset = Immediate8(a);
|
|
|
|
return ((int16) Registers.PCw + offset) & 0xffff;
|
|
}
|
|
|
|
static inline uint32 RelativeLongSlow (AccessMode a) // BRL $xxxx
|
|
{
|
|
int16 offset = Immediate16Slow(a);
|
|
|
|
return ((int32) Registers.PCw + offset) & 0xffff;
|
|
}
|
|
|
|
static inline uint32 RelativeLong (AccessMode a) // BRL $xxxx
|
|
{
|
|
int16 offset = Immediate16(a);
|
|
|
|
return ((int32) Registers.PCw + offset) & 0xffff;
|
|
}
|
|
|
|
static inline uint32 AbsoluteIndexedIndirectSlow (AccessMode a) // (a,X)
|
|
{
|
|
uint16 addr;
|
|
|
|
if (a & JSR)
|
|
{
|
|
// JSR (a,X) pushes the old address in the middle of loading the new.
|
|
// OpenBus needs to be set to account for this.
|
|
addr = Immediate8Slow(READ);
|
|
if (a == JSR)
|
|
OpenBus = Registers.PCl;
|
|
addr |= Immediate8Slow(READ) << 8;
|
|
}
|
|
else
|
|
addr = Immediate16Slow(READ);
|
|
|
|
AddCycles(ONE_CYCLE);
|
|
addr += Registers.X.W;
|
|
|
|
// Address load wraps within the bank
|
|
uint16 addr2 = S9xGetWord(ICPU.ShiftedPB | addr, WRAP_BANK);
|
|
OpenBus = addr2 >> 8;
|
|
|
|
return (addr2);
|
|
}
|
|
|
|
static inline uint32 AbsoluteIndexedIndirect (AccessMode a) // (a,X)
|
|
{
|
|
uint16 addr = Immediate16Slow(READ);
|
|
|
|
AddCycles(ONE_CYCLE);
|
|
addr += Registers.X.W;
|
|
|
|
// Address load wraps within the bank
|
|
uint16 addr2 = S9xGetWord(ICPU.ShiftedPB | addr, WRAP_BANK);
|
|
OpenBus = addr2 >> 8;
|
|
|
|
return (addr2);
|
|
}
|
|
|
|
static inline uint32 AbsoluteIndirectLongSlow (AccessMode a) // [a]
|
|
{
|
|
uint16 addr = Immediate16Slow(READ);
|
|
|
|
// No info on wrapping, but it doesn't matter anyway due to mirroring
|
|
uint32 addr2 = S9xGetWord(addr);
|
|
OpenBus = addr2 >> 8;
|
|
addr2 |= (OpenBus = S9xGetByte(addr + 2)) << 16;
|
|
|
|
return (addr2);
|
|
}
|
|
|
|
static inline uint32 AbsoluteIndirectLong (AccessMode a) // [a]
|
|
{
|
|
uint16 addr = Immediate16(READ);
|
|
|
|
// No info on wrapping, but it doesn't matter anyway due to mirroring
|
|
uint32 addr2 = S9xGetWord(addr);
|
|
OpenBus = addr2 >> 8;
|
|
addr2 |= (OpenBus = S9xGetByte(addr + 2)) << 16;
|
|
|
|
return (addr2);
|
|
}
|
|
|
|
static inline uint32 AbsoluteIndirectSlow (AccessMode a) // (a)
|
|
{
|
|
// No info on wrapping, but it doesn't matter anyway due to mirroring
|
|
uint16 addr2 = S9xGetWord(Immediate16Slow(READ));
|
|
OpenBus = addr2 >> 8;
|
|
|
|
return (addr2);
|
|
}
|
|
|
|
static inline uint32 AbsoluteIndirect (AccessMode a) // (a)
|
|
{
|
|
// No info on wrapping, but it doesn't matter anyway due to mirroring
|
|
uint16 addr2 = S9xGetWord(Immediate16(READ));
|
|
OpenBus = addr2 >> 8;
|
|
|
|
return (addr2);
|
|
}
|
|
|
|
static inline uint32 AbsoluteSlow (AccessMode a) // a
|
|
{
|
|
return (ICPU.ShiftedDB | Immediate16Slow(a));
|
|
}
|
|
|
|
static inline uint32 Absolute (AccessMode a) // a
|
|
{
|
|
return (ICPU.ShiftedDB | Immediate16(a));
|
|
}
|
|
|
|
static inline uint32 AbsoluteLongSlow (AccessMode a) // l
|
|
{
|
|
uint32 addr = Immediate16Slow(READ);
|
|
|
|
// JSR l pushes the old bank in the middle of loading the new.
|
|
// OpenBus needs to be set to account for this.
|
|
if (a == JSR)
|
|
OpenBus = Registers.PB;
|
|
|
|
addr |= Immediate8Slow(a) << 16;
|
|
|
|
return (addr);
|
|
}
|
|
|
|
static inline uint32 AbsoluteLong (AccessMode a) // l
|
|
{
|
|
uint32 addr = READ_3WORD(CPU.PCBase + Registers.PCw);
|
|
AddCycles(CPU.MemSpeedx2 + CPU.MemSpeed);
|
|
if (a & READ)
|
|
OpenBus = addr >> 16;
|
|
Registers.PCw += 3;
|
|
|
|
return (addr);
|
|
}
|
|
|
|
static inline uint32 DirectSlow (AccessMode a) // d
|
|
{
|
|
uint16 addr = Immediate8Slow(a) + Registers.D.W;
|
|
if (Registers.DL != 0)
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr);
|
|
}
|
|
|
|
static inline uint32 Direct (AccessMode a) // d
|
|
{
|
|
uint16 addr = Immediate8(a) + Registers.D.W;
|
|
if (Registers.DL != 0)
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr);
|
|
}
|
|
|
|
static inline uint32 DirectIndirectSlow (AccessMode a) // (d)
|
|
{
|
|
uint32 addr = S9xGetWord(DirectSlow(READ), (!CheckEmulation() || Registers.DL) ? WRAP_BANK : WRAP_PAGE);
|
|
if (a & READ)
|
|
OpenBus = (uint8) (addr >> 8);
|
|
addr |= ICPU.ShiftedDB;
|
|
|
|
return (addr);
|
|
}
|
|
|
|
static inline uint32 DirectIndirectE0 (AccessMode a) // (d)
|
|
{
|
|
uint32 addr = S9xGetWord(Direct(READ));
|
|
if (a & READ)
|
|
OpenBus = (uint8) (addr >> 8);
|
|
addr |= ICPU.ShiftedDB;
|
|
|
|
return (addr);
|
|
}
|
|
|
|
static inline uint32 DirectIndirectE1 (AccessMode a) // (d)
|
|
{
|
|
uint32 addr = S9xGetWord(DirectSlow(READ), Registers.DL ? WRAP_BANK : WRAP_PAGE);
|
|
if (a & READ)
|
|
OpenBus = (uint8) (addr >> 8);
|
|
addr |= ICPU.ShiftedDB;
|
|
|
|
return (addr);
|
|
}
|
|
|
|
static inline uint32 DirectIndirectIndexedSlow (AccessMode a) // (d),Y
|
|
{
|
|
uint32 addr = DirectIndirectSlow(a);
|
|
if (a & WRITE || !CheckIndex() || (addr & 0xff) + Registers.YL >= 0x100)
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr + Registers.Y.W);
|
|
}
|
|
|
|
static inline uint32 DirectIndirectIndexedE0X0 (AccessMode a) // (d),Y
|
|
{
|
|
uint32 addr = DirectIndirectE0(a);
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr + Registers.Y.W);
|
|
}
|
|
|
|
static inline uint32 DirectIndirectIndexedE0X1 (AccessMode a) // (d),Y
|
|
{
|
|
uint32 addr = DirectIndirectE0(a);
|
|
if (a & WRITE || (addr & 0xff) + Registers.YL >= 0x100)
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr + Registers.Y.W);
|
|
}
|
|
|
|
static inline uint32 DirectIndirectIndexedE1 (AccessMode a) // (d),Y
|
|
{
|
|
uint32 addr = DirectIndirectE1(a);
|
|
if (a & WRITE || (addr & 0xff) + Registers.YL >= 0x100)
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr + Registers.Y.W);
|
|
}
|
|
|
|
static inline uint32 DirectIndirectLongSlow (AccessMode a) // [d]
|
|
{
|
|
uint16 addr = DirectSlow(READ);
|
|
uint32 addr2 = S9xGetWord(addr);
|
|
OpenBus = addr2 >> 8;
|
|
addr2 |= (OpenBus = S9xGetByte(addr + 2)) << 16;
|
|
|
|
return (addr2);
|
|
}
|
|
|
|
static inline uint32 DirectIndirectLong (AccessMode a) // [d]
|
|
{
|
|
uint16 addr = Direct(READ);
|
|
uint32 addr2 = S9xGetWord(addr);
|
|
OpenBus = addr2 >> 8;
|
|
addr2 |= (OpenBus = S9xGetByte(addr + 2)) << 16;
|
|
|
|
return (addr2);
|
|
}
|
|
|
|
static inline uint32 DirectIndirectIndexedLongSlow (AccessMode a) // [d],Y
|
|
{
|
|
return (DirectIndirectLongSlow(a) + Registers.Y.W);
|
|
}
|
|
|
|
static inline uint32 DirectIndirectIndexedLong (AccessMode a) // [d],Y
|
|
{
|
|
return (DirectIndirectLong(a) + Registers.Y.W);
|
|
}
|
|
|
|
static inline uint32 DirectIndexedXSlow (AccessMode a) // d,X
|
|
{
|
|
pair addr;
|
|
addr.W = DirectSlow(a);
|
|
if (!CheckEmulation() || Registers.DL)
|
|
addr.W += Registers.X.W;
|
|
else
|
|
addr.B.l += Registers.XL;
|
|
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr.W);
|
|
}
|
|
|
|
static inline uint32 DirectIndexedXE0 (AccessMode a) // d,X
|
|
{
|
|
uint16 addr = Direct(a) + Registers.X.W;
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr);
|
|
}
|
|
|
|
static inline uint32 DirectIndexedXE1 (AccessMode a) // d,X
|
|
{
|
|
if (Registers.DL)
|
|
return (DirectIndexedXE0(a));
|
|
else
|
|
{
|
|
pair addr;
|
|
addr.W = Direct(a);
|
|
addr.B.l += Registers.XL;
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr.W);
|
|
}
|
|
}
|
|
|
|
static inline uint32 DirectIndexedYSlow (AccessMode a) // d,Y
|
|
{
|
|
pair addr;
|
|
addr.W = DirectSlow(a);
|
|
if (!CheckEmulation() || Registers.DL)
|
|
addr.W += Registers.Y.W;
|
|
else
|
|
addr.B.l += Registers.YL;
|
|
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr.W);
|
|
}
|
|
|
|
static inline uint32 DirectIndexedYE0 (AccessMode a) // d,Y
|
|
{
|
|
uint16 addr = Direct(a) + Registers.Y.W;
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr);
|
|
}
|
|
|
|
static inline uint32 DirectIndexedYE1 (AccessMode a) // d,Y
|
|
{
|
|
if (Registers.DL)
|
|
return (DirectIndexedYE0(a));
|
|
else
|
|
{
|
|
pair addr;
|
|
addr.W = Direct(a);
|
|
addr.B.l += Registers.YL;
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr.W);
|
|
}
|
|
}
|
|
|
|
static inline uint32 DirectIndexedIndirectSlow (AccessMode a) // (d,X)
|
|
{
|
|
uint32 addr = S9xGetWord(DirectIndexedXSlow(READ), (!CheckEmulation() || Registers.DL) ? WRAP_BANK : WRAP_PAGE);
|
|
if (a & READ)
|
|
OpenBus = (uint8) (addr >> 8);
|
|
|
|
return (ICPU.ShiftedDB | addr);
|
|
}
|
|
|
|
static inline uint32 DirectIndexedIndirectE0 (AccessMode a) // (d,X)
|
|
{
|
|
uint32 addr = S9xGetWord(DirectIndexedXE0(READ));
|
|
if (a & READ)
|
|
OpenBus = (uint8) (addr >> 8);
|
|
|
|
return (ICPU.ShiftedDB | addr);
|
|
}
|
|
|
|
static inline uint32 DirectIndexedIndirectE1 (AccessMode a) // (d,X)
|
|
{
|
|
uint32 addr = S9xGetWord(DirectIndexedXE1(READ), Registers.DL ? WRAP_BANK : WRAP_PAGE);
|
|
if (a & READ)
|
|
OpenBus = (uint8) (addr >> 8);
|
|
|
|
return (ICPU.ShiftedDB | addr);
|
|
}
|
|
|
|
static inline uint32 AbsoluteIndexedXSlow (AccessMode a) // a,X
|
|
{
|
|
uint32 addr = AbsoluteSlow(a);
|
|
if (a & WRITE || !CheckIndex() || (addr & 0xff) + Registers.XL >= 0x100)
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr + Registers.X.W);
|
|
}
|
|
|
|
static inline uint32 AbsoluteIndexedXX0 (AccessMode a) // a,X
|
|
{
|
|
uint32 addr = Absolute(a);
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr + Registers.X.W);
|
|
}
|
|
|
|
static inline uint32 AbsoluteIndexedXX1 (AccessMode a) // a,X
|
|
{
|
|
uint32 addr = Absolute(a);
|
|
if (a & WRITE || (addr & 0xff) + Registers.XL >= 0x100)
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr + Registers.X.W);
|
|
}
|
|
|
|
static inline uint32 AbsoluteIndexedYSlow (AccessMode a) // a,Y
|
|
{
|
|
uint32 addr = AbsoluteSlow(a);
|
|
if (a & WRITE || !CheckIndex() || (addr & 0xff) + Registers.YL >= 0x100)
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr + Registers.Y.W);
|
|
}
|
|
|
|
static inline uint32 AbsoluteIndexedYX0 (AccessMode a) // a,Y
|
|
{
|
|
uint32 addr = Absolute(a);
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr + Registers.Y.W);
|
|
}
|
|
|
|
static inline uint32 AbsoluteIndexedYX1 (AccessMode a) // a,Y
|
|
{
|
|
uint32 addr = Absolute(a);
|
|
if (a & WRITE || (addr & 0xff) + Registers.YL >= 0x100)
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr + Registers.Y.W);
|
|
}
|
|
|
|
static inline uint32 AbsoluteLongIndexedXSlow (AccessMode a) // l,X
|
|
{
|
|
return (AbsoluteLongSlow(a) + Registers.X.W);
|
|
}
|
|
|
|
static inline uint32 AbsoluteLongIndexedX (AccessMode a) // l,X
|
|
{
|
|
return (AbsoluteLong(a) + Registers.X.W);
|
|
}
|
|
|
|
static inline uint32 StackRelativeSlow (AccessMode a) // d,S
|
|
{
|
|
uint16 addr = Immediate8Slow(a) + Registers.S.W;
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr);
|
|
}
|
|
|
|
static inline uint32 StackRelative (AccessMode a) // d,S
|
|
{
|
|
uint16 addr = Immediate8(a) + Registers.S.W;
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr);
|
|
}
|
|
|
|
static inline uint32 StackRelativeIndirectIndexedSlow (AccessMode a) // (d,S),Y
|
|
{
|
|
uint32 addr = S9xGetWord(StackRelativeSlow(READ));
|
|
if (a & READ)
|
|
OpenBus = (uint8) (addr >> 8);
|
|
addr = (addr + Registers.Y.W + ICPU.ShiftedDB) & 0xffffff;
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr);
|
|
}
|
|
|
|
static inline uint32 StackRelativeIndirectIndexed (AccessMode a) // (d,S),Y
|
|
{
|
|
uint32 addr = S9xGetWord(StackRelative(READ));
|
|
if (a & READ)
|
|
OpenBus = (uint8) (addr >> 8);
|
|
addr = (addr + Registers.Y.W + ICPU.ShiftedDB) & 0xffffff;
|
|
AddCycles(ONE_CYCLE);
|
|
|
|
return (addr);
|
|
}
|
|
|
|
#endif
|