mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-11-30 22:44:22 +01:00
407 lines
10 KiB
C++
407 lines
10 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),
|
|
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"
|
|
#include "cheats.h"
|
|
|
|
static uint8 S9xGetByteFree (uint32);
|
|
static void S9xSetByteFree (uint8, uint32);
|
|
|
|
|
|
static uint8 S9xGetByteFree (uint32 address)
|
|
{
|
|
uint32 Cycles = CPU.Cycles;
|
|
uint32 WaitAddress = CPU.WaitAddress;
|
|
uint8 byte;
|
|
|
|
byte = S9xGetByte(address);
|
|
|
|
CPU.WaitAddress = WaitAddress;
|
|
CPU.Cycles = Cycles;
|
|
|
|
return (byte);
|
|
}
|
|
|
|
static void S9xSetByteFree (uint8 byte, uint32 address)
|
|
{
|
|
uint32 Cycles = CPU.Cycles;
|
|
uint32 WaitAddress = CPU.WaitAddress;
|
|
|
|
S9xSetByte(byte, address);
|
|
|
|
CPU.WaitAddress = WaitAddress;
|
|
CPU.Cycles = Cycles;
|
|
}
|
|
|
|
void S9xInitWatchedAddress (void)
|
|
{
|
|
for (unsigned int i = 0; i < sizeof(watches) / sizeof(watches[0]); i++)
|
|
watches[i].on = false;
|
|
|
|
}
|
|
|
|
void S9xInitCheatData (void)
|
|
{
|
|
Cheat.RAM = Memory.RAM;
|
|
Cheat.SRAM = Memory.SRAM;
|
|
Cheat.FillRAM = Memory.FillRAM;
|
|
}
|
|
|
|
void S9xAddCheat (bool8 enable, bool8 save_current_value, uint32 address, uint8 byte)
|
|
{
|
|
if (Cheat.num_cheats < sizeof(Cheat.c) / sizeof(Cheat.c[0]))
|
|
{
|
|
Cheat.c[Cheat.num_cheats].address = address;
|
|
Cheat.c[Cheat.num_cheats].byte = byte;
|
|
Cheat.c[Cheat.num_cheats].enabled = enable;
|
|
|
|
if (save_current_value)
|
|
{
|
|
Cheat.c[Cheat.num_cheats].saved_byte = S9xGetByteFree(address);
|
|
Cheat.c[Cheat.num_cheats].saved = TRUE;
|
|
}
|
|
|
|
Cheat.num_cheats++;
|
|
}
|
|
}
|
|
|
|
void S9xDeleteCheat (uint32 which1)
|
|
{
|
|
if (which1 < Cheat.num_cheats)
|
|
{
|
|
if (Cheat.c[which1].enabled)
|
|
S9xRemoveCheat(which1);
|
|
|
|
memmove(&Cheat.c[which1], &Cheat.c[which1 + 1], sizeof(Cheat.c[0]) * (Cheat.num_cheats - which1 - 1));
|
|
|
|
Cheat.num_cheats--;
|
|
}
|
|
}
|
|
|
|
void S9xDeleteCheats (void)
|
|
{
|
|
S9xRemoveCheats();
|
|
Cheat.num_cheats = 0;
|
|
}
|
|
|
|
void S9xRemoveCheat (uint32 which1)
|
|
{
|
|
if (Cheat.c[which1].saved)
|
|
{
|
|
uint32 address = Cheat.c[which1].address;
|
|
|
|
int block = (address & 0xffffff) >> MEMMAP_SHIFT;
|
|
uint8 *ptr = Memory.Map[block];
|
|
|
|
if (ptr >= (uint8 *) CMemory::MAP_LAST)
|
|
*(ptr + (address & 0xffff)) = Cheat.c[which1].saved_byte;
|
|
else
|
|
S9xSetByteFree(Cheat.c[which1].saved_byte, address);
|
|
}
|
|
}
|
|
|
|
void S9xRemoveCheats (void)
|
|
{
|
|
for (uint32 i = 0; i < Cheat.num_cheats; i++)
|
|
if (Cheat.c[i].enabled)
|
|
S9xRemoveCheat(i);
|
|
}
|
|
|
|
void S9xEnableCheat (uint32 which1)
|
|
{
|
|
if (which1 < Cheat.num_cheats && !Cheat.c[which1].enabled)
|
|
{
|
|
Cheat.c[which1].enabled = TRUE;
|
|
S9xApplyCheat(which1);
|
|
}
|
|
}
|
|
|
|
void S9xDisableCheat (uint32 which1)
|
|
{
|
|
if (which1 < Cheat.num_cheats && Cheat.c[which1].enabled)
|
|
{
|
|
S9xRemoveCheat(which1);
|
|
Cheat.c[which1].enabled = FALSE;
|
|
}
|
|
}
|
|
|
|
void S9xApplyCheat (uint32 which1)
|
|
{
|
|
uint32 address = Cheat.c[which1].address;
|
|
|
|
if (!Cheat.c[which1].saved)
|
|
{
|
|
Cheat.c[which1].saved_byte = S9xGetByteFree(address);
|
|
Cheat.c[which1].saved = TRUE;
|
|
}
|
|
|
|
int block = (address & 0xffffff) >> MEMMAP_SHIFT;
|
|
uint8 *ptr = Memory.Map[block];
|
|
|
|
if (ptr >= (uint8 *) CMemory::MAP_LAST)
|
|
*(ptr + (address & 0xffff)) = Cheat.c[which1].byte;
|
|
else
|
|
S9xSetByteFree(Cheat.c[which1].byte, address);
|
|
}
|
|
|
|
void S9xApplyCheats (void)
|
|
{
|
|
if (Settings.ApplyCheats)
|
|
{
|
|
for (uint32 i = 0; i < Cheat.num_cheats; i++)
|
|
if (Cheat.c[i].enabled)
|
|
S9xApplyCheat(i);
|
|
}
|
|
}
|
|
|
|
bool8 S9xLoadCheatFile (const char *filename)
|
|
{
|
|
FILE *fs;
|
|
uint8 data[28];
|
|
|
|
Cheat.num_cheats = 0;
|
|
|
|
fs = fopen(filename, "rb");
|
|
if (!fs)
|
|
return (FALSE);
|
|
|
|
while (fread((void *) data, 1, 28, fs) == 28)
|
|
{
|
|
Cheat.c[Cheat.num_cheats].enabled = (data[0] & 4) == 0;
|
|
Cheat.c[Cheat.num_cheats].byte = data[1];
|
|
Cheat.c[Cheat.num_cheats].address = data[2] | (data[3] << 8) | (data[4] << 16);
|
|
Cheat.c[Cheat.num_cheats].saved_byte = data[5];
|
|
Cheat.c[Cheat.num_cheats].saved = (data[0] & 8) != 0;
|
|
memmove(Cheat.c[Cheat.num_cheats].name, &data[8], 20);
|
|
Cheat.c[Cheat.num_cheats++].name[20] = 0;
|
|
}
|
|
|
|
fclose(fs);
|
|
|
|
return (TRUE);
|
|
}
|
|
|
|
bool8 S9xSaveCheatFile (const char *filename)
|
|
{
|
|
if (Cheat.num_cheats == 0)
|
|
{
|
|
remove(filename);
|
|
return (TRUE);
|
|
}
|
|
|
|
FILE *fs;
|
|
uint8 data[28];
|
|
|
|
fs = fopen(filename, "wb");
|
|
if (!fs)
|
|
return (FALSE);
|
|
|
|
for (uint32 i = 0; i < Cheat.num_cheats; i++)
|
|
{
|
|
memset(data, 0, 28);
|
|
|
|
if (i == 0)
|
|
{
|
|
data[6] = 254;
|
|
data[7] = 252;
|
|
}
|
|
|
|
if (!Cheat.c[i].enabled)
|
|
data[0] |= 4;
|
|
|
|
if (Cheat.c[i].saved)
|
|
data[0] |= 8;
|
|
|
|
data[1] = Cheat.c[i].byte;
|
|
data[2] = (uint8) (Cheat.c[i].address >> 0);
|
|
data[3] = (uint8) (Cheat.c[i].address >> 8);
|
|
data[4] = (uint8) (Cheat.c[i].address >> 16);
|
|
data[5] = Cheat.c[i].saved_byte;
|
|
|
|
memmove(&data[8], Cheat.c[i].name, 19);
|
|
|
|
if (fwrite(data, 28, 1, fs) != 1)
|
|
{
|
|
fclose(fs);
|
|
return (FALSE);
|
|
}
|
|
}
|
|
|
|
return (fclose(fs) == 0);
|
|
}
|