/***********************************************************************************
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 - 2011 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 - 2011 BearOso
Win32 GUI code
(c) Copyright 2003 - 2006 blip,
funkyass,
Matthew Kendora,
Nach,
nitsuja
(c) Copyright 2009 - 2011 OV2
Mac OS GUI code
(c) Copyright 1998 - 2001 John Stiles
(c) Copyright 2001 - 2011 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 <vector>
#include <algorithm>
#include <string>
#include <numeric>
#include <cassert>
#include "snes9x.h"
#include "memmap.h"
#include "apu/apu.h"
#include "sdd1.h"
// deinterleave
static void S9xDeinterleaveType1(int size, uint8_t *base)
{
uint8_t blocks[256];
int nblocks = size >> 16;
for (int i = 0; i < nblocks; ++i)
{
blocks[i * 2] = i + nblocks;
blocks[i * 2 + 1] = i;
}
for (int i = 0; i < nblocks * 2; ++i)
for (int j = i; j < nblocks * 2; ++j)
if (blocks[j] == i)
{
std::swap_ranges(&base[blocks[i] * 0x8000], &base[(blocks[i] + 1) * 0x8000], &base[blocks[j] * 0x8000]);
std::swap(blocks[i], blocks[j]);
break;
}
}
// allocation and deallocation
bool CMemory::Init()
{
this->RAM.reset(new uint8_t[0x20000]);
this->SRAM.reset(new uint8_t[0x20000]);
this->VRAM.reset(new uint8_t[0x10000]);
this->RealROM.reset(new uint8_t[MAX_ROM_SIZE + 0x200 + 0x8000]);
if (!this->RAM || !this->SRAM || !this->VRAM || !this->RealROM)
{
this->Deinit();
return false;
}
std::fill_n(&this->RAM[0], 0x20000, 0);
std::fill_n(&this->SRAM[0], 0x20000, 0);
std::fill_n(&this->VRAM[0], 0x10000, 0);
std::fill_n(&this->RealROM[0], MAX_ROM_SIZE + 0x200 + 0x8000, 0);
// FillRAM uses first 32K of ROM image area, otherwise space just
// wasted. Might be read by the SuperFX code.
this->FillRAM = &this->RealROM[0];
// Add 0x8000 to ROM image pointer to stop SuperFX code accessing
// unallocated memory (can cause crash on some ports).
this->ROM = &this->RealROM[0x8000];
return true;
}
void CMemory::Deinit()
{
this->RAM.reset();
this->SRAM.reset();
this->VRAM.reset();
this->ROM = nullptr;
this->RealROM.reset();
this->Safe(nullptr);
}
// file management and ROM detection
static bool allASCII(uint8_t *b, int size)
{
for (int i = 0; i < size; ++i)
if (b[i] < 32 || b[i] > 126)
return false;
return true;
}
int CMemory::ScoreHiROM(bool skip_header, int32_t romoff)
{
uint8_t *buf = &this->ROM[0xff00 + romoff + (skip_header ? 0x200 : 0)];
int score = 0;
if (buf[0xd5] & 0x1)
score += 2;
// Mode23 is SA-1
if (buf[0xd5] == 0x23)
score -= 2;
if (buf[0xd4] == 0x20)
score += 2;
if ((buf[0xdc] + (buf[0xdd] << 8)) + (buf[0xde] + (buf[0xdf] << 8)) == 0xffff)
{
score += 2;
if (buf[0xde] + (buf[0xdf] << 8))
++score;
}
if (buf[0xda] == 0x33)
score += 2;
if ((buf[0xd5] & 0xf) < 4)
score += 2;
if (!(buf[0xfd] & 0x80))
score -= 6;
if ((buf[0xfc] + (buf[0xfd] << 8)) > 0xffb0)
score -= 2; // reduced after looking at a scan by Cowering
if (this->CalculatedSize > 1024 * 1024 * 3)
score += 4;
if ((1 << (buf[0xd7] - 7)) > 48)
--score;
if (!allASCII(&buf[0xb0], 6))
--score;
if (!allASCII(&buf[0xc0], ROM_NAME_LEN - 1))
--score;
return score;
}
int CMemory::ScoreLoROM(bool skip_header, int32_t romoff)
{
uint8_t *buf = &this->ROM[0x7f00 + romoff + (skip_header ? 0x200 : 0)];
int score = 0;
if (!(buf[0xd5] & 0x1))
score += 3;
// Mode23 is SA-1
if (buf[0xd5] == 0x23)
score += 2;
if ((buf[0xdc] + (buf[0xdd] << 8)) + (buf[0xde] + (buf[0xdf] << 8)) == 0xffff)
{
score += 2;
if (buf[0xde] + (buf[0xdf] << 8))
++score;
}
if (buf[0xda] == 0x33)
score += 2;
if ((buf[0xd5] & 0xf) < 4)
score += 2;
if (!(buf[0xfd] & 0x80))
score -= 6;
if ((buf[0xfc] + (buf[0xfd] << 8)) > 0xffb0)
score -= 2; // reduced per Cowering suggestion
if (this->CalculatedSize <= 1024 * 1024 * 16)
score += 2;
if ((1 << (buf[0xd7] - 7)) > 48)
--score;
if (!allASCII(&buf[0xb0], 6))
--score;
if (!allASCII(&buf[0xc0], ROM_NAME_LEN - 1))
--score;
return score;
}
bool CMemory::LoadROMSNSF(const uint8_t *lrombuf, int32_t lromsize, const uint8_t *srambuf, int32_t sramsize)
{
int retry_count = 0;
std::fill_n(&this->ROM[0], static_cast<int>(MAX_ROM_SIZE), 0);
again:
this->CalculatedSize = 0;
this->ExtendedFormat = NOPE;
int32_t totalFileSize = std::min<int32_t>(MAX_ROM_SIZE, lromsize);
if (!totalFileSize)
return false;
std::copy_n(&lrombuf[0], totalFileSize, &this->ROM[0]);
std::fill_n(&this->SRAM[0], 0x20000, 0xff);
if (srambuf && sramsize)
std::copy_n(&srambuf[0], sramsize, &this->SRAM[0]);
int hi_score = this->ScoreHiROM(false);
int lo_score = this->ScoreLoROM(false);
if (((hi_score > lo_score && this->ScoreHiROM(true) > hi_score) || (hi_score <= lo_score && this->ScoreLoROM(true) > lo_score)))
{
std::copy_n(&this->ROM[512], totalFileSize - 512, &this->ROM[0]);
totalFileSize -= 512;
// modifying ROM, so we need to rescore
hi_score = this->ScoreHiROM(false);
lo_score = this->ScoreLoROM(false);
}
this->CalculatedSize = (totalFileSize / 0x2000) * 0x2000;
if (this->CalculatedSize > 0x400000 &&
this->ROM[0x7fd5] + (this->ROM[0x7fd6] << 8) != 0x4332 && // exclude S-DD1
this->ROM[0x7fd5] + (this->ROM[0x7fd6] << 8) != 0x4532 &&
this->ROM[0xffd5] + (this->ROM[0xffd6] << 8) != 0xF93a && // exclude SPC7110
this->ROM[0xffd5] + (this->ROM[0xffd6] << 8) != 0xF53a)
this->ExtendedFormat = YEAH;
// if both vectors are invalid, it's type 1 interleaved LoROM
if (this->ExtendedFormat == NOPE && this->ROM[0x7ffc] + (this->ROM[0x7ffd] << 8) < 0x8000 && this->ROM[0xfffc] + (this->ROM[0xfffd] << 8) < 0x8000)
{
if (!Settings.ForceNotInterleaved)
S9xDeinterleaveType1(totalFileSize, &this->ROM[0]);
}
// CalculatedSize is now set, so rescore
hi_score = this->ScoreHiROM(false);
lo_score = this->ScoreLoROM(false);
uint8_t *RomHeader = &this->ROM[0];
if (this->ExtendedFormat != NOPE)
{
int swappedhirom = this->ScoreHiROM(false, 0x400000);
int swappedlorom = this->ScoreLoROM(false, 0x400000);
// set swapped here
if (std::max(swappedlorom, swappedhirom) >= std::max(lo_score, hi_score))
{
this->ExtendedFormat = BIGFIRST;
hi_score = swappedhirom;
lo_score = swappedlorom;
RomHeader += 0x400000;
}
else
this->ExtendedFormat = SMALLFIRST;
}
bool tales = false;
bool interleaved = false;
if (lo_score >= hi_score)
{
this->LoROM = true;
this->HiROM = false;
// ignore map type byte if not 0x2x or 0x3x
if ((RomHeader[0x7fd5] & 0xf0) == 0x20 || (RomHeader[0x7fd5] & 0xf0) == 0x30)
switch (RomHeader[0x7fd5] & 0xf)
{
case 1:
interleaved = true;
break;
case 5:
interleaved = tales = true;
}
}
else
{
this->LoROM = false;
this->HiROM = true;
if ((RomHeader[0xffd5] & 0xf0) == 0x20 || (RomHeader[0xffd5] & 0xf0) == 0x30)
switch (RomHeader[0xffd5] & 0xf)
{
case 0:
case 3:
interleaved = true;
}
}
// this two games fail to be detected
if (!strncmp(reinterpret_cast<char *>(&this->ROM[0x7fc0]), "YUYU NO QUIZ DE GO!GO!", 22) || !strncmp(reinterpret_cast<char *>(&this->ROM[0xffc0]), "BATMAN--REVENGE JOKER", 21))
{
this->LoROM = true;
this->HiROM = interleaved = tales = false;
}
if (!Settings.ForceNotInterleaved && interleaved)
{
if (tales)
{
if (this->ExtendedFormat == BIGFIRST)
{
S9xDeinterleaveType1(0x400000, &this->ROM[0]);
S9xDeinterleaveType1(this->CalculatedSize - 0x400000, &this->ROM[0x400000]);
}
else
{
S9xDeinterleaveType1(this->CalculatedSize - 0x400000, &this->ROM[0]);
S9xDeinterleaveType1(0x400000, &this->ROM[this->CalculatedSize - 0x400000]);
}
this->LoROM = false;
this->HiROM = true;
}
else
{
std::swap(this->LoROM, this->HiROM);
S9xDeinterleaveType1(this->CalculatedSize, &this->ROM[0]);
}
hi_score = this->ScoreHiROM(false);
lo_score = this->ScoreLoROM(false);
if (((this->HiROM && (lo_score >= hi_score || hi_score < 0)) || (this->LoROM && (hi_score > lo_score || lo_score < 0))) && !retry_count)
{
Settings.ForceNotInterleaved = true;
++retry_count;
goto again;
}
}
if (this->ExtendedFormat == SMALLFIRST)
tales = true;
if (tales)
{
auto tmp = std::vector<uint8_t>(this->CalculatedSize - 0x400000);
std::copy_n(&this->ROM[0], this->CalculatedSize - 0x400000, &tmp[0]);
std::copy_n(&this->ROM[this->CalculatedSize - 0x400000], 0x400000, &this->ROM[0]);
std::copy_n(&tmp[0], this->CalculatedSize - 0x400000, &this->ROM[0x400000]);
}
memset(&SNESGameFixes, 0, sizeof(SNESGameFixes));
this->InitROM();
S9xReset();
return true;
}
// initialization
char *CMemory::Safe(const char *s)
{
static std::unique_ptr<char[]> safe;
static int safe_len = 0;
if (!s)
{
if (safe)
safe.reset();
return nullptr;
}
int len = strlen(s);
if (!safe || len + 1 > safe_len)
{
safe_len = len + 1;
safe.reset(new char[safe_len]);
}
for (int i = 0; i < len; ++i)
{
if (s[i] >= 32 && s[i] < 127)
safe[i] = s[i];
else
safe[i] = '_';
}
safe[len] = 0;
return safe.get();
}
void CMemory::ParseSNESHeader(uint8_t *RomHeader)
{
strncpy(this->ROMName, reinterpret_cast<char *>(&RomHeader[0x10]), ROM_NAME_LEN - 1);
this->SRAMSize = RomHeader[0x28];
this->ROMSpeed = RomHeader[0x25];
this->ROMType = RomHeader[0x26];
this->ROMRegion = RomHeader[0x29];
std::copy_n(&RomHeader[0x02], 4, &this->ROMId[0]);
}
void CMemory::InitROM()
{
//// Parse ROM header and read ROM informatoin
std::fill_n(&this->ROMId[0], 5, 0);
uint8_t *RomHeader = &this->ROM[0x7FB0];
if (this->ExtendedFormat == BIGFIRST)
RomHeader += 0x400000;
if (this->HiROM)
RomHeader += 0x8000;
this->ParseSNESHeader(RomHeader);
//// Detect and initialize chips
//// detection codes are compatible with NSRT
uint32_t identifier = ((this->ROMType & 0xff) << 8) + (this->ROMSpeed & 0xff);
Settings.SDD1 = identifier == 0x4332 || identifier == 0x4532;
//// Map memory and calculate checksum
this->Map_Initialize();
if (this->HiROM)
{
if (this->ExtendedFormat != NOPE)
this->Map_ExtendedHiROMMap();
else
this->Map_HiROMMap();
}
else
{
if (Settings.SDD1)
this->Map_SDD1LoROMMap();
else if (this->ExtendedFormat != NOPE)
this->Map_JumboLoROMMap();
else if (!strncmp(this->ROMName, "WANDERERS FROM YS", 17))
this->Map_NoMAD1LoROMMap();
else if (!strncmp(this->ROMName, "SOUND NOVEL-TCOOL", 17) || !strncmp(this->ROMName, "DERBY STALLION 96", 17))
this->Map_ROM24MBSLoROMMap();
else if (!strncmp(this->ROMName, "THOROUGHBRED BREEDER3", 21) || !strncmp(this->ROMName, "RPG-TCOOL 2", 11))
this->Map_SRAM512KLoROMMap();
else
this->Map_LoROMMap();
}
//// Build more ROM information
// NTSC/PAL
Settings.PAL = this->ROMRegion >= 2 && this->ROMRegion <= 12;
// truncate cart name
this->ROMName[ROM_NAME_LEN - 1] = 0;
if (strlen(this->ROMName))
{
char *p = this->ROMName + strlen(this->ROMName);
if (p > this->ROMName + 21 && this->ROMName[20] == ' ')
p = this->ROMName + 21;
while (p > this->ROMName && *(p - 1) == ' ')
--p;
*p = 0;
}
// SRAM size
this->SRAMMask = this->SRAMSize ? ((1 << (this->SRAMSize + 3)) * 128) - 1 : 0;
//// Initialize emulation
Timings.H_Max_Master = SNES_CYCLES_PER_SCANLINE;
Timings.H_Max = Timings.H_Max_Master;
Timings.HBlankStart = SNES_HBLANK_START_HC;
Timings.HBlankEnd = SNES_HBLANK_END_HC;
Timings.HDMAInit = SNES_HDMA_INIT_HC;
Timings.HDMAStart = SNES_HDMA_START_HC;
Timings.RenderPos = SNES_RENDER_START_HC;
Timings.V_Max_Master = Settings.PAL ? SNES_MAX_PAL_VCOUNTER : SNES_MAX_NTSC_VCOUNTER;
Timings.V_Max = Timings.V_Max_Master;
/* From byuu: The total delay time for both the initial (H)DMA sync (to the DMA clock),
and the end (H)DMA sync (back to the last CPU cycle's mcycle rate (6, 8, or 12)) always takes between 12-24 mcycles.
Possible delays: { 12, 14, 16, 18, 20, 22, 24 }
XXX: Snes9x can't emulate this timing :( so let's use the average value... */
Timings.DMACPUSync = 18;
/* If the CPU is halted (i.e. for DMA) while /NMI goes low, the NMI will trigger
after the DMA completes (even if /NMI goes high again before the DMA
completes). In this case, there is a 24-30 cycle delay between the end of DMA
and the NMI handler, time enough for an instruction or two. */
// Wild Guns, Mighty Morphin Power Rangers - The Fighting Edition
Timings.NMIDMADelay = 24;
Timings.IRQPendCount = 0;
//// Hack games
this->ApplyROMFixes();
sprintf(this->ROMName, "%s", Safe(this->ROMName));
sprintf(this->ROMId, "%s", Safe(this->ROMId));
Settings.ForceNotInterleaved = false;
}
// memory map
uint32_t CMemory::map_mirror(uint32_t size, uint32_t pos)
{
// from bsnes
if (!size)
return 0;
if (pos < size)
return pos;
uint32_t mask = 1 << 31;
while (!(pos & mask))
mask >>= 1;
if (size <= (pos & mask))
return this->map_mirror(size, pos - mask);
else
return mask + this->map_mirror(size - mask, pos - mask);
}
void CMemory::map_lorom(uint32_t bank_s, uint32_t bank_e, uint32_t addr_s, uint32_t addr_e, uint32_t size)
{
for (uint32_t c = bank_s; c <= bank_e; ++c)
for (uint32_t i = addr_s; i <= addr_e; i += 0x1000)
{
uint32_t p = (c << 4) | (i >> 12);
uint32_t addr = (c & 0x7f) * 0x8000;
this->Map[p] = &this->ROM[this->map_mirror(size, addr) - (i & 0x8000)];
this->BlockIsROM[p] = true;
this->BlockIsRAM[p] = false;
}
}
void CMemory::map_hirom(uint32_t bank_s, uint32_t bank_e, uint32_t addr_s, uint32_t addr_e, uint32_t size)
{
for (uint32_t c = bank_s; c <= bank_e; ++c)
for (uint32_t i = addr_s; i <= addr_e; i += 0x1000)
{
uint32_t p = (c << 4) | (i >> 12);
uint32_t addr = c << 16;
this->Map[p] = &this->ROM[this->map_mirror(size, addr)];
this->BlockIsROM[p] = true;
this->BlockIsRAM[p] = false;
}
}
void CMemory::map_lorom_offset(uint32_t bank_s, uint32_t bank_e, uint32_t addr_s, uint32_t addr_e, uint32_t size, uint32_t offset)
{
for (uint32_t c = bank_s; c <= bank_e; ++c)
for (uint32_t i = addr_s; i <= addr_e; i += 0x1000)
{
uint32_t p = (c << 4) | (i >> 12);
uint32_t addr = ((c - bank_s) & 0x7f) * 0x8000;
this->Map[p] = &this->ROM[offset + this->map_mirror(size, addr) - (i & 0x8000)];
this->BlockIsROM[p] = true;
this->BlockIsRAM[p] = false;
}
}
void CMemory::map_hirom_offset(uint32_t bank_s, uint32_t bank_e, uint32_t addr_s, uint32_t addr_e, uint32_t size, uint32_t offset)
{
for (uint32_t c = bank_s; c <= bank_e; ++c)
for (uint32_t i = addr_s; i <= addr_e; i += 0x1000)
{
uint32_t p = (c << 4) | (i >> 12);
uint32_t addr = (c - bank_s) << 16;
this->Map[p] = &this->ROM[offset + this->map_mirror(size, addr)];
this->BlockIsROM[p] = true;
this->BlockIsRAM[p] = false;
}
}
void CMemory::map_space(uint32_t bank_s, uint32_t bank_e, uint32_t addr_s, uint32_t addr_e, uint8_t *data)
{
for (uint32_t c = bank_s; c <= bank_e; ++c)
for (uint32_t i = addr_s; i <= addr_e; i += 0x1000)
{
uint32_t p = (c << 4) | (i >> 12);
this->Map[p] = data;
this->BlockIsROM[p] = false;
this->BlockIsRAM[p] = true;
}
}
void CMemory::map_index(uint32_t bank_s, uint32_t bank_e, uint32_t addr_s, uint32_t addr_e, int index, int type)
{
bool isRAM = type != MAP_TYPE_I_O;
for (uint32_t c = bank_s; c <= bank_e; ++c)
for (uint32_t i = addr_s; i <= addr_e; i += 0x1000)
{
uint32_t p = (c << 4) | (i >> 12);
this->Map[p] = reinterpret_cast<uint8_t *>(index);
this->BlockIsROM[p] = false;
this->BlockIsRAM[p] = isRAM;
}
}
void CMemory::map_System()
{
// will be overwritten
this->map_space(0x00, 0x3f, 0x0000, 0x1fff, &this->RAM[0]);
this->map_index(0x00, 0x3f, 0x2000, 0x3fff, MAP_PPU, MAP_TYPE_I_O);
this->map_index(0x00, 0x3f, 0x4000, 0x5fff, MAP_CPU, MAP_TYPE_I_O);
this->map_space(0x80, 0xbf, 0x0000, 0x1fff, &this->RAM[0]);
this->map_index(0x80, 0xbf, 0x2000, 0x3fff, MAP_PPU, MAP_TYPE_I_O);
this->map_index(0x80, 0xbf, 0x4000, 0x5fff, MAP_CPU, MAP_TYPE_I_O);
}
void CMemory::map_WRAM()
{
// will overwrite others
this->map_space(0x7e, 0x7e, 0x0000, 0xffff, &this->RAM[0]);
this->map_space(0x7f, 0x7f, 0x0000, 0xffff, &this->RAM[0x10000]);
}
void CMemory::map_LoROMSRAM()
{
this->map_index(0x70, 0x7f, 0x0000, 0x7fff, MAP_LOROM_SRAM, MAP_TYPE_RAM);
this->map_index(0xf0, 0xff, 0x0000, 0x7fff, MAP_LOROM_SRAM, MAP_TYPE_RAM);
}
void CMemory::map_HiROMSRAM()
{
this->map_index(0x20, 0x3f, 0x6000, 0x7fff, MAP_HIROM_SRAM, MAP_TYPE_RAM);
this->map_index(0xa0, 0xbf, 0x6000, 0x7fff, MAP_HIROM_SRAM, MAP_TYPE_RAM);
}
void CMemory::map_WriteProtectROM()
{
std::copy_n(&this->Map[0], 0x1000, &this->WriteMap[0]);
for (int c = 0; c < 0x1000; ++c)
if (this->BlockIsROM[c])
this->WriteMap[c] = reinterpret_cast<uint8_t *>(MAP_NONE);
}
void CMemory::Map_Initialize()
{
for (int c = 0; c < 0x1000; ++c)
{
this->Map[c] = this->WriteMap[c] = reinterpret_cast<uint8_t *>(MAP_NONE);
this->BlockIsROM[c] = this->BlockIsRAM[c] = false;
}
}
void CMemory::Map_LoROMMap()
{
this->map_System();
this->map_lorom(0x00, 0x3f, 0x8000, 0xffff, this->CalculatedSize);
this->map_lorom(0x40, 0x7f, 0x0000, 0xffff, this->CalculatedSize);
this->map_lorom(0x80, 0xbf, 0x8000, 0xffff, this->CalculatedSize);
this->map_lorom(0xc0, 0xff, 0x0000, 0xffff, this->CalculatedSize);
this->map_LoROMSRAM();
this->map_WRAM();
this->map_WriteProtectROM();
}
void CMemory::Map_NoMAD1LoROMMap()
{
this->map_System();
this->map_lorom(0x00, 0x3f, 0x8000, 0xffff, this->CalculatedSize);
this->map_lorom(0x40, 0x7f, 0x0000, 0xffff, this->CalculatedSize);
this->map_lorom(0x80, 0xbf, 0x8000, 0xffff, this->CalculatedSize);
this->map_lorom(0xc0, 0xff, 0x0000, 0xffff, this->CalculatedSize);
this->map_index(0x70, 0x7f, 0x0000, 0xffff, MAP_LOROM_SRAM, MAP_TYPE_RAM);
this->map_index(0xf0, 0xff, 0x0000, 0xffff, MAP_LOROM_SRAM, MAP_TYPE_RAM);
this->map_WRAM();
this->map_WriteProtectROM();
}
void CMemory::Map_JumboLoROMMap()
{
// XXX: Which game uses this?
this->map_System();
this->map_lorom_offset(0x00, 0x3f, 0x8000, 0xffff, this->CalculatedSize - 0x400000, 0x400000);
this->map_lorom_offset(0x40, 0x7f, 0x0000, 0xffff, this->CalculatedSize - 0x400000, 0x400000);
this->map_lorom_offset(0x80, 0xbf, 0x8000, 0xffff, 0x400000, 0);
this->map_lorom_offset(0xc0, 0xff, 0x0000, 0xffff, 0x400000, 0x200000);
this->map_LoROMSRAM();
this->map_WRAM();
this->map_WriteProtectROM();
}
void CMemory::Map_ROM24MBSLoROMMap()
{
// PCB: BSC-1A5M-01, BSC-1A7M-10
this->map_System();
this->map_lorom_offset(0x00, 0x1f, 0x8000, 0xffff, 0x100000, 0);
this->map_lorom_offset(0x20, 0x3f, 0x8000, 0xffff, 0x100000, 0x100000);
this->map_lorom_offset(0x80, 0x9f, 0x8000, 0xffff, 0x100000, 0x200000);
this->map_lorom_offset(0xa0, 0xbf, 0x8000, 0xffff, 0x100000, 0x100000);
this->map_LoROMSRAM();
this->map_WRAM();
this->map_WriteProtectROM();
}
void CMemory::Map_SRAM512KLoROMMap()
{
this->map_System();
this->map_lorom(0x00, 0x3f, 0x8000, 0xffff, this->CalculatedSize);
this->map_lorom(0x40, 0x7f, 0x0000, 0xffff, this->CalculatedSize);
this->map_lorom(0x80, 0xbf, 0x8000, 0xffff, this->CalculatedSize);
this->map_lorom(0xc0, 0xff, 0x0000, 0xffff, this->CalculatedSize);
this->map_space(0x70, 0x70, 0x0000, 0xffff, &this->SRAM[0]);
this->map_space(0x71, 0x71, 0x0000, 0xffff, &this->SRAM[0x8000]);
this->map_space(0x72, 0x72, 0x0000, 0xffff, &this->SRAM[0x10000]);
this->map_space(0x73, 0x73, 0x0000, 0xffff, &this->SRAM[0x18000]);
this->map_WRAM();
this->map_WriteProtectROM();
}
void CMemory::Map_SDD1LoROMMap()
{
this->map_System();
this->map_lorom(0x00, 0x3f, 0x8000, 0xffff, this->CalculatedSize);
this->map_lorom(0x80, 0xbf, 0x8000, 0xffff, this->CalculatedSize);
this->map_hirom_offset(0x40, 0x7f, 0x0000, 0xffff, this->CalculatedSize, 0);
this->map_hirom_offset(0xc0, 0xff, 0x0000, 0xffff, this->CalculatedSize, 0); // will be overwritten dynamically
this->map_index(0x70, 0x7f, 0x0000, 0x7fff, MAP_LOROM_SRAM, MAP_TYPE_RAM);
this->map_WRAM();
this->map_WriteProtectROM();
}
void CMemory::Map_HiROMMap()
{
this->map_System();
this->map_hirom(0x00, 0x3f, 0x8000, 0xffff, CalculatedSize);
this->map_hirom(0x40, 0x7f, 0x0000, 0xffff, CalculatedSize);
this->map_hirom(0x80, 0xbf, 0x8000, 0xffff, CalculatedSize);
this->map_hirom(0xc0, 0xff, 0x0000, 0xffff, CalculatedSize);
this->map_HiROMSRAM();
this->map_WRAM();
this->map_WriteProtectROM();
}
void CMemory::Map_ExtendedHiROMMap()
{
this->map_System();
this->map_hirom_offset(0x00, 0x3f, 0x8000, 0xffff, this->CalculatedSize - 0x400000, 0x400000);
this->map_hirom_offset(0x40, 0x7f, 0x0000, 0xffff, this->CalculatedSize - 0x400000, 0x400000);
this->map_hirom_offset(0x80, 0xbf, 0x8000, 0xffff, 0x400000, 0);
this->map_hirom_offset(0xc0, 0xff, 0x0000, 0xffff, 0x400000, 0);
this->map_HiROMSRAM();
this->map_WRAM();
this->map_WriteProtectROM();
}
// hack
bool CMemory::match_na(const char *str)
{
return !strcmp(this->ROMName, str);
}
bool CMemory::match_nn(const char *str)
{
return !strncmp(this->ROMName, str, strlen(str));
}
bool CMemory::match_id(const char *str)
{
return !strncmp(this->ROMId, str, strlen(str));
}
void CMemory::ApplyROMFixes()
{
Settings.BlockInvalidVRAMAccess = Settings.BlockInvalidVRAMAccessMaster;
//// APU timing hacks :(
Timings.APUSpeedup = 0;
Timings.APUAllowTimeOverflow = false;
if (!Settings.DisableGameSpecificHacks)
{
if (this->match_id("AVCJ")) // Rendering Ranger R2
Timings.APUSpeedup = 4;
if (this->match_na("GAIA GENSOUKI 1 JPN") || // Gaia Gensouki
this->match_id("JG ") || // Illusion of Gaia
this->match_id("CQ ") || // Stunt Race FX
this->match_na("SOULBLADER - 1") || // Soul Blader
this->match_na("SOULBLAZER - 1 USA") || // Soul Blazer
this->match_na("SLAP STICK 1 JPN") || // Slap Stick
this->match_id("E9 ") || // Robotrek
this->match_nn("ACTRAISER") || // Actraiser
this->match_nn("ActRaiser-2") || // Actraiser 2
this->match_id("AQT") || // Tenchi Souzou, Terranigma
this->match_id("ATV") || // Tales of Phantasia
this->match_id("ARF") || // Star Ocean
this->match_id("APR") || // Zen-Nippon Pro Wrestling 2 - 3-4 Budoukan
this->match_id("A4B") || // Super Bomberman 4
this->match_id("Y7 ") || // U.F.O. Kamen Yakisoban - Present Ban
this->match_id("Y9 ") || // U.F.O. Kamen Yakisoban - Shihan Ban
this->match_id("APB") || // Super Bomberman - Panic Bomber W
this->match_na("DARK KINGDOM") || // Dark Kingdom
this->match_na("ZAN3 SFC") || // Zan III Spirits
this->match_na("HIOUDEN") || // Hiouden - Mamono-tachi Tono Chikai
this->match_na("\xC3\xDD\xBC\xC9\xB3\xC0") || // Tenshi no Uta
this->match_na("FORTUNE QUEST") || // Fortune Quest - Dice wo Korogase
this->match_na("FISHING TO BASSING") || // Shimono Masaki no Fishing To Bassing
this->match_na("OHMONO BLACKBASS") || // Oomono Black Bass Fishing - Jinzouko Hen
this->match_na("MASTERS") || // Harukanaru Augusta 2 - Masters
this->match_na("SFC \xB6\xD2\xDD\xD7\xB2\xC0\xDE\xB0") || // Kamen Rider
this->match_na("ZENKI TENCHIMEIDOU") || // Kishin Douji Zenki - Tenchi Meidou
this->match_nn("TokyoDome '95Battle 7") || // Shin Nippon Pro Wrestling Kounin '95 - Tokyo Dome Battle 7
this->match_nn("SWORD WORLD SFC") || // Sword World SFC/2
this->match_nn("LETs PACHINKO(") || // BS Lets Pachinko Nante Gindama 1/2/3/4
this->match_nn("THE FISHING MASTER") || // Mark Davis The Fishing Master
this->match_nn("Parlor") || // Parlor mini/2/3/4/5/6/7, Parlor Parlor!/2/3/4/5
this->match_na("HEIWA Parlor!Mini8") || // Parlor mini 8
this->match_nn("SANKYO Fever! \xCC\xA8\xB0\xCA\xDE\xB0!")) // SANKYO Fever! Fever!
Timings.APUSpeedup = 1;
if (this->match_na("EARTHWORM JIM 2") || // Earthworm Jim 2
this->match_na("NBA Hangtime") || // NBA Hang Time
this->match_na("MSPACMAN") || // Ms Pacman
this->match_na("THE MASK") || // The Mask
this->match_na("PRIMAL RAGE") || // Primal Rage
this->match_na("DOOM TROOPERS")) // Doom Troopers
Timings.APUAllowTimeOverflow = true;
}
S9xAPUTimingSetSpeedup(Timings.APUSpeedup);
S9xAPUAllowTimeOverflow(Timings.APUAllowTimeOverflow);
//// Other timing hacks :(
Timings.HDMAStart = SNES_HDMA_START_HC + Settings.HDMATimingHack - 100;
Timings.HBlankStart = SNES_HBLANK_START_HC + Timings.HDMAStart - SNES_HDMA_START_HC;
Timings.IRQTriggerCycles = 10;
if (!Settings.DisableGameSpecificHacks)
{
// The delay to sync CPU and DMA which Snes9x cannot emulate.
// Some games need really severe delay timing...
if (this->match_na("BATTLE GRANDPRIX")) // Battle Grandprix
Timings.DMACPUSync = 20;
// An infinite loop reads $4212 and waits V-blank end, whereas VIRQ is set V=0.
// If Snes9x succeeds to escape from the loop before jumping into the IRQ handler, the game goes further.
// If Snes9x jumps into the IRQ handler before escaping from the loop,
// Snes9x cannot escape from the loop permanently because the RTI is in the next V-blank.
if (this->match_na("Aero the AcroBat 2"))
Timings.IRQPendCount = 2;
// XXX: What's happening?
if (this->match_na("X-MEN")) // Spider-Man and the X-Men
Settings.BlockInvalidVRAMAccess = false;
//// SRAM initial value
if (this->match_na("HITOMI3"))
{
SRAMSize = 1;
SRAMMask = ((1 << (SRAMSize + 3)) * 128) - 1;
}
// others: BS and ST-01x games are 0x00.
//// OAM hacks :(
// OAM hacks because we don't fully understand the behavior of the SNES.
// Totally wacky display in 2P mode...
// seems to need a disproven behavior, so we're definitely overlooking some other bug?
if (match_nn("UNIRACERS")) // Uniracers
SNESGameFixes.Uniracers = true;
}
}