Update to bsnes v063r07 release.

src/lib is no more, merged libco, nall and ruby into src/.

libsnes has been improved, builds in when you "make library" now.

XML memory map generation happens from a nall template header, so both
libsnes (used by ui_sdl) and ui_qt can run again without snesreader.

ui_sdl improved, can run any game via command-line, but doesn't load
or save RAM yet.

And most importantly, much work has gone into sPPU, the new cycle-
based PPU renderer. It has enough support to be compatible with all
games ($2134-213f are mostly complete, just missing range/time over
flags and VRAM/OAM/CGRAM blocking.) It only renders the back color, as
if you had all BG and OAM layers disabled.

At this point, if you run Air Strike Patrol, thanks to its gradient
fade highlighting, you can see the plane's shadow, just as on real
hardware now. It also runs test_hello and test_noise, which I will
upload shortly.
This commit is contained in:
byuu 2010-04-04 18:42:09 +00:00
parent 9614275b34
commit b11f22f517
123 changed files with 1956 additions and 218 deletions

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bsnes-bppu.exe Normal file

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bsnes-sppu.exe Normal file

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bsnes.exe

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@ -1,18 +1,18 @@
include lib/nall/Makefile
include nall/Makefile
ui := ui_qt
# compiler
c := $(compiler) --std=gnu99
cpp := $(subst cc,++,$(compiler)) -std=gnu++0x
flags := -O3 -fomit-frame-pointer -I. -Ilib
flags := -O3 -fomit-frame-pointer -I.
link :=
objects :=
# profile-guided instrumentation:
# profile-guided instrumentation
# flags += -fprofile-generate
# link += -lgcov
# profile-guided optimization:
# profile-guided optimization
# flags += -fprofile-use
# platform

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@ -1,7 +0,0 @@
rmdir /Q /S nall
rmdir /Q /S ruby
mkdir nall
mkdir ruby
xcopy /E ..\..\..\nall nall
xcopy /E ..\..\..\ruby ruby

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@ -1,10 +0,0 @@
rm -r libco
rm -r nall
rm -r ruby
cp -r ../../../libco ./libco
cp -r ../../../nall ./nall
cp -r ../../../ruby ./ruby
rm -r libco/doc
rm -r libco/test

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src/nall/info/snes.hpp Normal file
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@ -0,0 +1,857 @@
#ifndef NALL_INFO_SNES_HPP
#define NALL_INFO_SNES_HPP
namespace nall {
class snes_information {
public:
string xml_memory_map;
inline snes_information(const uint8_t *data, unsigned size);
private:
inline void read_header(const uint8_t *data, unsigned size);
inline unsigned find_header(const uint8_t *data, unsigned size);
inline unsigned score_header(const uint8_t *data, unsigned size, unsigned addr);
inline unsigned gameboy_ram_size(const uint8_t *data, unsigned size);
inline bool gameboy_has_rtc(const uint8_t *data, unsigned size);
enum HeaderField {
CartName = 0x00,
Mapper = 0x15,
RomType = 0x16,
RomSize = 0x17,
RamSize = 0x18,
CartRegion = 0x19,
Company = 0x1a,
Version = 0x1b,
Complement = 0x1c, //inverse checksum
Checksum = 0x1e,
ResetVector = 0x3c,
};
enum Mode {
ModeNormal,
ModeBsxSlotted,
ModeBsx,
ModeSufamiTurbo,
ModeSuperGameBoy,
};
enum Type {
TypeNormal,
TypeBsxSlotted,
TypeBsxBios,
TypeBsx,
TypeSufamiTurboBios,
TypeSufamiTurbo,
TypeSuperGameBoy1Bios,
TypeSuperGameBoy2Bios,
TypeGameBoy,
TypeUnknown,
};
enum Region {
NTSC,
PAL,
};
enum MemoryMapper {
LoROM,
HiROM,
ExLoROM,
ExHiROM,
SuperFXROM,
SA1ROM,
SPC7110ROM,
BSCLoROM,
BSCHiROM,
BSXROM,
STROM,
};
enum DSP1MemoryMapper {
DSP1Unmapped,
DSP1LoROM1MB,
DSP1LoROM2MB,
DSP1HiROM,
};
bool loaded; //is a base cartridge inserted?
unsigned crc32; //crc32 of all cartridges (base+slot(s))
unsigned rom_size;
unsigned ram_size;
Mode mode;
Type type;
Region region;
MemoryMapper mapper;
DSP1MemoryMapper dsp1_mapper;
bool has_bsx_slot;
bool has_superfx;
bool has_sa1;
bool has_srtc;
bool has_sdd1;
bool has_spc7110;
bool has_spc7110rtc;
bool has_cx4;
bool has_dsp1;
bool has_dsp2;
bool has_dsp3;
bool has_dsp4;
bool has_obc1;
bool has_st010;
bool has_st011;
bool has_st018;
};
snes_information::snes_information(const uint8_t *data, unsigned size) {
read_header(data, size);
string xml = "<?xml version='1.0' encoding='UTF-8'?>\n";
if(type == TypeBsx) {
xml << "<cartridge/>";
return;
} else if(type == TypeSufamiTurbo) {
xml << "<cartridge/>";
return;
} else if(type == TypeGameBoy) {
xml << "<cartridge rtc='" << gameboy_has_rtc(data, size) << "'>\n";
if(gameboy_ram_size(data, size) > 0) {
xml << " <ram size='" << strhex(gameboy_ram_size(data, size)) << "'/>\n";
}
xml << "</cartridge>\n";
return;
}
xml << "<cartridge";
if(region == NTSC) {
xml << " region='NTSC'";
} else {
xml << " region='PAL'";
}
xml << ">\n";
if(type == TypeSuperGameBoy1Bios) {
xml << " <rom>\n";
xml << " <map mode='linear' address='00-7f:8000-ffff'/>\n";
xml << " <map mode='linear' address='80-ff:8000-ffff'/>\n";
xml << " </rom>\n";
xml << " <supergameboy revision='1'>\n";
xml << " <mmio>\n";
xml << " <map address='00-3f:6000-7fff'/>\n";
xml << " <map address='80-bf:6000-7fff'/>\n";
xml << " </mmio>\n";
xml << " </supergameboy>\n";
} else if(type == TypeSuperGameBoy2Bios) {
xml << " <rom>\n";
xml << " <map mode='linear' address='00-7f:8000-ffff'/>\n";
xml << " <map mode='linear' address='80-ff:8000-ffff'/>\n";
xml << " </rom>\n";
xml << " <supergameboy revision='2'>\n";
xml << " <mmio>\n";
xml << " <map address='00-3f:6000-7fff'/>\n";
xml << " <map address='80-bf:6000-7fff'/>\n";
xml << " </mmio>\n";
xml << " </supergameboy>\n";
} else if(has_spc7110) {
xml << " <rom>\n";
xml << " <map mode='shadow' address='00-0f:8000-ffff'/>\n";
xml << " <map mode='shadow' address='80-bf:8000-ffff'/>\n";
xml << " <map mode='linear' address='c0-cf:0000-ffff'/>\n";
xml << " </rom>\n";
xml << " <spc7110>\n";
xml << " <mcu>\n";
xml << " <map address='d0-ff:0000-ffff' offset='100000' size='" << strhex(size - 0x100000) << "'/>\n";
xml << " </mcu>\n";
xml << " <ram size='" << strhex(ram_size) << "'>\n";
xml << " <map mode='linear' address='00:6000-7fff'/>\n";
xml << " <map mode='linear' address='30:6000-7fff'/>\n";
xml << " </ram>\n";
xml << " <mmio>\n";
xml << " <map address='00-3f:4800-483f'/>\n";
xml << " <map address='80-bf:4800-483f'/>\n";
xml << " </mmio>\n";
if(has_spc7110rtc) {
xml << " <rtc>\n";
xml << " <map address='00-3f:4840-4842'/>\n";
xml << " <map address='80-bf:4840-4842'/>\n";
xml << " </rtc>\n";
}
xml << " <dcu>\n";
xml << " <map address='50:0000-ffff'/>\n";
xml << " </dcu>\n";
xml << " </spc7110>\n";
} else if(mapper == LoROM) {
xml << " <rom>\n";
xml << " <map mode='linear' address='00-7f:8000-ffff'/>\n";
xml << " <map mode='linear' address='80-ff:8000-ffff'/>\n";
xml << " </rom>\n";
if(ram_size > 0) {
xml << " <ram size='" << strhex(ram_size) << "'>\n";
xml << " <map mode='linear' address='20-3f:6000-7fff'/>\n";
xml << " <map mode='linear' address='a0-bf:6000-7fff'/>\n";
if((rom_size > 0x200000) || (ram_size > 32 * 1024)) {
xml << " <map mode='linear' address='70-7f:0000-7fff'/>\n";
xml << " <map mode='linear' address='f0-ff:0000-7fff'/>\n";
} else {
xml << " <map mode='linear' address='70-7f:0000-ffff'/>\n";
xml << " <map mode='linear' address='f0-ff:0000-ffff'/>\n";
}
xml << " </ram>\n";
}
} else if(mapper == HiROM) {
xml << " <rom>\n";
xml << " <map mode='shadow' address='00-3f:8000-ffff'/>\n";
xml << " <map mode='linear' address='40-7f:0000-ffff'/>\n";
xml << " <map mode='shadow' address='80-bf:8000-ffff'/>\n";
xml << " <map mode='linear' address='c0-ff:0000-ffff'/>\n";
xml << " </rom>\n";
if(ram_size > 0) {
xml << " <ram size='" << strhex(ram_size) << "'>\n";
xml << " <map mode='linear' address='20-3f:6000-7fff'/>\n";
xml << " <map mode='linear' address='a0-bf:6000-7fff'/>\n";
if((rom_size > 0x200000) || (ram_size > 32 * 1024)) {
xml << " <map mode='linear' address='70-7f:0000-7fff'/>\n";
} else {
xml << " <map mode='linear' address='70-7f:0000-ffff'/>\n";
}
xml << " </ram>\n";
}
} else if(mapper == ExLoROM) {
xml << " <rom>\n";
xml << " <map mode='linear' address='00-3f:8000-ffff'/>\n";
xml << " <map mode='linear' address='40-7f:0000-ffff'/>\n";
xml << " <map mode='linear' address='80-bf:8000-ffff'/>\n";
xml << " </rom>\n";
if(ram_size > 0) {
xml << " <ram size='" << strhex(ram_size) << "'>\n";
xml << " <map mode='linear' address='20-3f:6000-7fff'/>\n";
xml << " <map mode='linear' address='a0-bf:6000-7fff'/>\n";
xml << " <map mode='linear' address='70-7f:0000-7fff'/>\n";
xml << " </ram>\n";
}
} else if(mapper == ExHiROM) {
xml << " <rom>\n";
xml << " <map mode='shadow' address='00-3f:8000-ffff' offset='400000'/>\n";
xml << " <map mode='linear' address='40-7f:0000-ffff' offset='400000'/>\n";
xml << " <map mode='shadow' address='80-bf:8000-ffff' offset='000000'/>\n";
xml << " <map mode='linear' address='c0-ff:0000-ffff' offset='000000'/>\n";
xml << " </rom>\n";
if(ram_size > 0) {
xml << " <ram size='" << strhex(ram_size) << "'>\n";
xml << " <map mode='linear' address='20-3f:6000-7fff'/>\n";
xml << " <map mode='linear' address='a0-bf:6000-7fff'/>\n";
if((rom_size > 0x200000) || (ram_size > 32 * 1024)) {
xml << " <map mode='linear' address='70-7f:0000-7fff'/>\n";
} else {
xml << " <map mode='linear' address='70-7f:0000-ffff'/>\n";
}
xml << " </ram>\n";
}
} else if(mapper == SuperFXROM) {
xml << " <superfx revision='2'>\n";
xml << " <rom>\n";
xml << " <map mode='linear' address='00-3f:8000-ffff'/>\n";
xml << " <map mode='linear' address='40-5f:0000-ffff'/>\n";
xml << " <map mode='linear' address='80-bf:8000-ffff'/>\n";
xml << " <map mode='linear' address='c0-df:0000-ffff'/>\n";
xml << " </rom>\n";
xml << " <ram size='" << strhex(ram_size) << "'>\n";
xml << " <map mode='linear' address='00-3f:6000-7fff' size='2000'/>\n";
xml << " <map mode='linear' address='60-7f:0000-ffff'/>\n";
xml << " <map mode='linear' address='80-bf:6000-7fff' size='2000'/>\n";
xml << " <map mode='linear' address='e0-ff:0000-ffff'/>\n";
xml << " </ram>\n";
xml << " <mmio>\n";
xml << " <map address='00-3f:3000-32ff'/>\n";
xml << " <map address='80-bf:3000-32ff'/>\n";
xml << " </mmio>\n";
xml << " </superfx>\n";
} else if(mapper == SA1ROM) {
xml << " <sa1>\n";
xml << " <rom>\n";
xml << " <map mode='linear' address='00-3f:8000-ffff'/>\n";
xml << " <map mode='linear' address='80-bf:8000-ffff'/>\n";
xml << " <map mode='linear' address='c0-ff:0000-ffff'/>\n";
xml << " </rom>\n";
xml << " <iram size='800'>\n";
xml << " <map mode='linear' address='00-3f:3000-37ff'/>\n";
xml << " <map mode='linear' address='80-bf:3000-37ff'/>\n";
xml << " </iram>\n";
xml << " <bwram size='" << strhex(ram_size) << "'>\n";
xml << " <map mode='linear' address='00-3f:6000-7fff'/>\n";
xml << " <map mode='linear' address='40-4f:0000-ffff'/>\n";
xml << " <map mode='linear' address='80-bf:6000-7fff'/>\n";
xml << " </bwram>\n";
xml << " <mmio>\n";
xml << " <map address='00-3f:2200-23ff'/>\n";
xml << " <map address='80-bf:2200-23ff'/>\n";
xml << " </mmio>\n";
xml << " </sa1>\n";
} else if(mapper == BSCLoROM) {
xml << " <rom>\n";
xml << " <map mode='linear' address='00-1f:8000-ffff' offset='000000'/>\n";
xml << " <map mode='linear' address='20-3f:8000-ffff' offset='100000'/>\n";
xml << " <map mode='linear' address='80-9f:8000-ffff' offset='200000'/>\n";
xml << " <map mode='linear' address='a0-bf:8000-ffff' offset='100000'/>\n";
xml << " </rom>\n";
xml << " <ram size='" << strhex(ram_size) << "'>\n";
xml << " <map mode='linear' address='70-7f:0000-7fff'/>\n";
xml << " <map mode='linear' address='f0-ff:0000-7fff'/>\n";
xml << " </ram>\n";
xml << " <bsx>\n";
xml << " <slot>\n";
xml << " <map mode='linear' address='c0-ef:0000-ffff'/>\n";
xml << " </slot>\n";
xml << " </bsx>\n";
} else if(mapper == BSCHiROM) {
xml << " <rom>\n";
xml << " <map mode='shadow' address='00-1f:8000-ffff'/>\n";
xml << " <map mode='linear' address='40-5f:0000-ffff'/>\n";
xml << " <map mode='shadow' address='80-9f:8000-ffff'/>\n";
xml << " <map mode='linear' address='c0-df:0000-ffff'/>\n";
xml << " </rom>\n";
xml << " <ram size='" << strhex(ram_size) << "'>\n";
xml << " <map mode='linear' address='20-3f:6000-7fff'/>\n";
xml << " <map mode='linear' address='a0-bf:6000-7fff'/>\n";
xml << " </ram>\n";
xml << " <bsx>\n";
xml << " <slot>\n";
xml << " <map mode='shadow' address='20-3f:8000-ffff'/>\n";
xml << " <map mode='linear' address='60-7f:0000-ffff'/>\n";
xml << " <map mode='shadow' address='a0-bf:8000-ffff'/>\n";
xml << " <map mode='linear' address='e0-ff:0000-ffff'/>\n";
xml << " </slot>\n";
xml << " </bsx>\n";
} else if(mapper == BSXROM) {
xml << " <rom>\n";
xml << " <map mode='linear' address='00-3f:8000-ffff'/>\n";
xml << " <map mode='linear' address='80-bf:8000-ffff'/>\n";
xml << " </rom>\n";
xml << " <bsx>\n";
xml << " <mmio>\n";
xml << " <map address='00-3f:5000-5fff'/>\n";
xml << " <map address='80-bf:5000-5fff'/>\n";
xml << " </mmio>\n";
xml << " </bsx>\n";
} else if(mapper == STROM) {
xml << " <rom>\n";
xml << " <map mode='linear' address='00-1f:8000-ffff'/>\n";
xml << " <map mode='linear' address='80-9f:8000-ffff'/>\n";
xml << " </rom>\n";
xml << " <sufamiturbo>\n";
xml << " <slot id='A'>\n";
xml << " <rom>\n";
xml << " <map mode='linear' address='20-3f:8000-ffff'/>\n";
xml << " <map mode='linear' address='a0-bf:8000-ffff'/>\n";
xml << " </rom>\n";
xml << " <ram>\n";
xml << " <map mode='linear' address='60-63:8000-ffff'/>\n";
xml << " <map mode='linear' address='e0-e3:8000-ffff'/>\n";
xml << " </ram>\n";
xml << " </slot>\n";
xml << " <slot id='B'>\n";
xml << " <rom>\n";
xml << " <map mode='linear' address='40-5f:8000-ffff'/>\n";
xml << " <map mode='linear' address='c0-df:8000-ffff'/>\n";
xml << " </rom>\n";
xml << " <ram>\n";
xml << " <map mode='linear' address='70-73:8000-ffff'/>\n";
xml << " <map mode='linear' address='f0-f3:8000-ffff'/>\n";
xml << " </ram>\n";
xml << " </slot>\n";
xml << " </sufamiturbo>\n";
}
if(has_srtc) {
xml << " <srtc>\n";
xml << " <mmio>\n";
xml << " <map address='00-3f:2800-2801'/>\n";
xml << " <map address='80-bf:2800-2801'/>\n";
xml << " </mmio>\n";
xml << " </srtc>\n";
}
if(has_sdd1) {
xml << " <sdd1>\n";
xml << " <mcu>\n";
xml << " <map address='c0-ff:0000-ffff'/>\n";
xml << " </mcu>\n";
xml << " <mmio>\n";
xml << " <map address='00-3f:4800-4807'/>\n";
xml << " <map address='80-bf:4800-4807'/>\n";
xml << " </mmio>\n";
xml << " </sdd1>\n";
}
if(has_cx4) {
xml << " <cx4>\n";
xml << " <mmio>\n";
xml << " <map address='00-3f:6000-7fff'/>\n";
xml << " <map address='80-bf:6000-7fff'/>\n";
xml << " </mmio>\n";
xml << " </cx4>\n";
}
if(has_dsp1) {
xml << " <necdsp program='DSP-1B'>\n";
if(dsp1_mapper == DSP1LoROM1MB) {
xml << " <dr>\n";
xml << " <map address='20-3f:8000-bfff'/>\n";
xml << " <map address='a0-bf:8000-bfff'/>\n";
xml << " </dr>\n";
xml << " <sr>\n";
xml << " <map address='20-3f:c000-ffff'/>\n";
xml << " <map address='a0-bf:c000-ffff'/>\n";
xml << " </sr>\n";
} else if(dsp1_mapper == DSP1LoROM2MB) {
xml << " <dr>\n";
xml << " <map address='60-6f:0000-3fff'/>\n";
xml << " <map address='e0-ef:0000-3fff'/>\n";
xml << " </dr>\n";
xml << " <sr>\n";
xml << " <map address='60-6f:4000-7fff'/>\n";
xml << " <map address='e0-ef:4000-7fff'/>\n";
xml << " </sr>\n";
} else if(dsp1_mapper == DSP1HiROM) {
xml << " <dr>\n";
xml << " <map address='00-1f:6000-6fff'/>\n";
xml << " <map address='80-9f:6000-6fff'/>\n";
xml << " </dr>\n";
xml << " <sr>\n";
xml << " <map address='00-1f:7000-7fff'/>\n";
xml << " <map address='80-9f:7000-7fff'/>\n";
xml << " </sr>\n";
}
xml << " </necdsp>\n";
}
if(has_dsp2) {
xml << " <necdsp program='DSP-2'>\n";
xml << " <dr>\n";
xml << " <map address='20-3f:8000-bfff'/>\n";
xml << " <map address='a0-bf:8000-bfff'/>\n";
xml << " </dr>\n";
xml << " <sr>\n";
xml << " <map address='20-3f:c000-ffff'/>\n";
xml << " <map address='a0-bf:c000-ffff'/>\n";
xml << " </sr>\n";
xml << " </necdsp>\n";
}
if(has_dsp3) {
xml << " <necdsp program='DSP-3'>\n";
xml << " <dr>\n";
xml << " <map address='20-3f:8000-bfff'/>\n";
xml << " <map address='a0-bf:8000-bfff'/>\n";
xml << " </dr>\n";
xml << " <sr>\n";
xml << " <map address='20-3f:c000-ffff'/>\n";
xml << " <map address='a0-bf:c000-ffff'/>\n";
xml << " </sr>\n";
xml << " </necdsp>\n";
}
if(has_dsp4) {
xml << " <necdsp program='DSP-4'>\n";
xml << " <dr>\n";
xml << " <map address='30-3f:8000-bfff'/>\n";
xml << " <map address='b0-bf:8000-bfff'/>\n";
xml << " </dr>\n";
xml << " <sr>\n";
xml << " <map address='30-3f:c000-ffff'/>\n";
xml << " <map address='b0-bf:c000-ffff'/>\n";
xml << " </sr>\n";
xml << " </necdsp>\n";
}
if(has_obc1) {
xml << " <obc1>\n";
xml << " <mmio>\n";
xml << " <map address='00-3f:6000-7fff'/>\n";
xml << " <map address='80-bf:6000-7fff'/>\n";
xml << " </mmio>\n";
xml << " </obc1>\n";
}
if(has_st010) {
xml << " <setadsp program='ST-0010'>\n";
xml << " <mmio>\n";
xml << " <map address='68-6f:0000-0fff'/>\n";
xml << " <map address='e8-ef:0000-0fff'/>\n";
xml << " </mmio>\n";
xml << " </setadsp>\n";
}
if(has_st011) {
//ST-0011 addresses not verified; chip is unsupported
xml << " <setadsp program='ST-0011'>\n";
xml << " <mmio>\n";
xml << " <map address='68-6f:0000-0fff'/>\n";
xml << " <map address='e8-ef:0000-0fff'/>\n";
xml << " </mmio>\n";
xml << " </setadsp>\n";
}
if(has_st018) {
xml << " <setarisc program='ST-0018'>\n";
xml << " <mmio>\n";
xml << " <map address='00-3f:3800-38ff'/>\n";
xml << " <map address='80-bf:3800-38ff'/>\n";
xml << " </mmio>\n";
xml << " </setarisc>\n";
}
xml << "</cartridge>\n";
xml_memory_map = xml;
}
void snes_information::read_header(const uint8_t *data, unsigned size) {
type = TypeUnknown;
mapper = LoROM;
dsp1_mapper = DSP1Unmapped;
region = NTSC;
rom_size = size;
ram_size = 0;
has_bsx_slot = false;
has_superfx = false;
has_sa1 = false;
has_srtc = false;
has_sdd1 = false;
has_spc7110 = false;
has_spc7110rtc = false;
has_cx4 = false;
has_dsp1 = false;
has_dsp2 = false;
has_dsp3 = false;
has_dsp4 = false;
has_obc1 = false;
has_st010 = false;
has_st011 = false;
has_st018 = false;
//=====================
//detect Game Boy carts
//=====================
if(size >= 0x0140) {
if(data[0x0104] == 0xce && data[0x0105] == 0xed && data[0x0106] == 0x66 && data[0x0107] == 0x66
&& data[0x0108] == 0xcc && data[0x0109] == 0x0d && data[0x010a] == 0x00 && data[0x010b] == 0x0b) {
type = TypeGameBoy;
return;
}
}
const unsigned index = find_header(data, size);
const uint8_t mapperid = data[index + Mapper];
const uint8_t rom_type = data[index + RomType];
const uint8_t rom_size = data[index + RomSize];
const uint8_t company = data[index + Company];
const uint8_t regionid = data[index + CartRegion] & 0x7f;
ram_size = 1024 << (data[index + RamSize] & 7);
if(ram_size == 1024) ram_size = 0; //no RAM present
//0, 1, 13 = NTSC; 2 - 12 = PAL
region = (regionid <= 1 || regionid >= 13) ? NTSC : PAL;
//=======================
//detect BS-X flash carts
//=======================
if(data[index + 0x13] == 0x00 || data[index + 0x13] == 0xff) {
if(data[index + 0x14] == 0x00) {
const uint8_t n15 = data[index + 0x15];
if(n15 == 0x00 || n15 == 0x80 || n15 == 0x84 || n15 == 0x9c || n15 == 0xbc || n15 == 0xfc) {
if(data[index + 0x1a] == 0x33 || data[index + 0x1a] == 0xff) {
type = TypeBsx;
mapper = BSXROM;
region = NTSC; //BS-X only released in Japan
return;
}
}
}
}
//=========================
//detect Sufami Turbo carts
//=========================
if(!memcmp(data, "BANDAI SFC-ADX", 14)) {
if(!memcmp(data + 16, "SFC-ADX BACKUP", 14)) {
type = TypeSufamiTurboBios;
} else {
type = TypeSufamiTurbo;
}
mapper = STROM;
region = NTSC; //Sufami Turbo only released in Japan
return; //RAM size handled outside this routine
}
//==========================
//detect Super Game Boy BIOS
//==========================
if(!memcmp(data + index, "Super GAMEBOY2", 14)) {
type = TypeSuperGameBoy2Bios;
return;
}
if(!memcmp(data + index, "Super GAMEBOY", 13)) {
type = TypeSuperGameBoy1Bios;
return;
}
//=====================
//detect standard carts
//=====================
//detect presence of BS-X flash cartridge connector (reads extended header information)
if(data[index - 14] == 'Z') {
if(data[index - 11] == 'J') {
uint8_t n13 = data[index - 13];
if((n13 >= 'A' && n13 <= 'Z') || (n13 >= '0' && n13 <= '9')) {
if(company == 0x33 || (data[index - 10] == 0x00 && data[index - 4] == 0x00)) {
has_bsx_slot = true;
}
}
}
}
if(has_bsx_slot) {
if(!memcmp(data + index, "Satellaview BS-X ", 21)) {
//BS-X base cart
type = TypeBsxBios;
mapper = BSXROM;
region = NTSC; //BS-X only released in Japan
return; //RAM size handled internally by load_cart_bsx() -> BSXCart class
} else {
type = TypeBsxSlotted;
mapper = (index == 0x7fc0 ? BSCLoROM : BSCHiROM);
region = NTSC; //BS-X slotted cartridges only released in Japan
}
} else {
//standard cart
type = TypeNormal;
if(index == 0x7fc0 && size >= 0x401000) {
mapper = ExLoROM;
} else if(index == 0x7fc0 && mapperid == 0x32) {
mapper = ExLoROM;
} else if(index == 0x7fc0) {
mapper = LoROM;
} else if(index == 0xffc0) {
mapper = HiROM;
} else { //index == 0x40ffc0
mapper = ExHiROM;
}
}
if(mapperid == 0x20 && (rom_type == 0x13 || rom_type == 0x14 || rom_type == 0x15 || rom_type == 0x1a)) {
has_superfx = true;
mapper = SuperFXROM;
ram_size = 1024 << (data[index - 3] & 7);
if(ram_size == 1024) ram_size = 0;
}
if(mapperid == 0x23 && (rom_type == 0x32 || rom_type == 0x34 || rom_type == 0x35)) {
has_sa1 = true;
mapper = SA1ROM;
}
if(mapperid == 0x35 && rom_type == 0x55) {
has_srtc = true;
}
if(mapperid == 0x32 && (rom_type == 0x43 || rom_type == 0x45)) {
has_sdd1 = true;
}
if(mapperid == 0x3a && (rom_type == 0xf5 || rom_type == 0xf9)) {
has_spc7110 = true;
has_spc7110rtc = (rom_type == 0xf9);
mapper = SPC7110ROM;
}
if(mapperid == 0x20 && rom_type == 0xf3) {
has_cx4 = true;
}
if((mapperid == 0x20 || mapperid == 0x21) && rom_type == 0x03) {
has_dsp1 = true;
}
if(mapperid == 0x30 && rom_type == 0x05 && company != 0xb2) {
has_dsp1 = true;
}
if(mapperid == 0x31 && (rom_type == 0x03 || rom_type == 0x05)) {
has_dsp1 = true;
}
if(has_dsp1 == true) {
if((mapperid & 0x2f) == 0x20 && size <= 0x100000) {
dsp1_mapper = DSP1LoROM1MB;
} else if((mapperid & 0x2f) == 0x20) {
dsp1_mapper = DSP1LoROM2MB;
} else if((mapperid & 0x2f) == 0x21) {
dsp1_mapper = DSP1HiROM;
}
}
if(mapperid == 0x20 && rom_type == 0x05) {
has_dsp2 = true;
}
if(mapperid == 0x30 && rom_type == 0x05 && company == 0xb2) {
has_dsp3 = true;
}
if(mapperid == 0x30 && rom_type == 0x03) {
has_dsp4 = true;
}
if(mapperid == 0x30 && rom_type == 0x25) {
has_obc1 = true;
}
if(mapperid == 0x30 && rom_type == 0xf6 && rom_size >= 10) {
has_st010 = true;
}
if(mapperid == 0x30 && rom_type == 0xf6 && rom_size < 10) {
has_st011 = true;
}
if(mapperid == 0x30 && rom_type == 0xf5) {
has_st018 = true;
}
}
unsigned snes_information::find_header(const uint8_t *data, unsigned size) {
unsigned score_lo = score_header(data, size, 0x007fc0);
unsigned score_hi = score_header(data, size, 0x00ffc0);
unsigned score_ex = score_header(data, size, 0x40ffc0);
if(score_ex) score_ex += 4; //favor ExHiROM on images > 32mbits
if(score_lo >= score_hi && score_lo >= score_ex) {
return 0x007fc0;
} else if(score_hi >= score_ex) {
return 0x00ffc0;
} else {
return 0x40ffc0;
}
}
unsigned snes_information::score_header(const uint8_t *data, unsigned size, unsigned addr) {
if(size < addr + 64) return 0; //image too small to contain header at this location?
int score = 0;
uint16_t resetvector = data[addr + ResetVector] | (data[addr + ResetVector + 1] << 8);
uint16_t checksum = data[addr + Checksum ] | (data[addr + Checksum + 1] << 8);
uint16_t complement = data[addr + Complement ] | (data[addr + Complement + 1] << 8);
uint8_t resetop = data[(addr & ~0x7fff) | (resetvector & 0x7fff)]; //first opcode executed upon reset
uint8_t mapper = data[addr + Mapper] & ~0x10; //mask off irrelevent FastROM-capable bit
//$00:[000-7fff] contains uninitialized RAM and MMIO.
//reset vector must point to ROM at $00:[8000-ffff] to be considered valid.
if(resetvector < 0x8000) return 0;
//some images duplicate the header in multiple locations, and others have completely
//invalid header information that cannot be relied upon.
//below code will analyze the first opcode executed at the specified reset vector to
//determine the probability that this is the correct header.
//most likely opcodes
if(resetop == 0x78 //sei
|| resetop == 0x18 //clc (clc; xce)
|| resetop == 0x38 //sec (sec; xce)
|| resetop == 0x9c //stz $nnnn (stz $4200)
|| resetop == 0x4c //jmp $nnnn
|| resetop == 0x5c //jml $nnnnnn
) score += 8;
//plausible opcodes
if(resetop == 0xc2 //rep #$nn
|| resetop == 0xe2 //sep #$nn
|| resetop == 0xad //lda $nnnn
|| resetop == 0xae //ldx $nnnn
|| resetop == 0xac //ldy $nnnn
|| resetop == 0xaf //lda $nnnnnn
|| resetop == 0xa9 //lda #$nn
|| resetop == 0xa2 //ldx #$nn
|| resetop == 0xa0 //ldy #$nn
|| resetop == 0x20 //jsr $nnnn
|| resetop == 0x22 //jsl $nnnnnn
) score += 4;
//implausible opcodes
if(resetop == 0x40 //rti
|| resetop == 0x60 //rts
|| resetop == 0x6b //rtl
|| resetop == 0xcd //cmp $nnnn
|| resetop == 0xec //cpx $nnnn
|| resetop == 0xcc //cpy $nnnn
) score -= 4;
//least likely opcodes
if(resetop == 0x00 //brk #$nn
|| resetop == 0x02 //cop #$nn
|| resetop == 0xdb //stp
|| resetop == 0x42 //wdm
|| resetop == 0xff //sbc $nnnnnn,x
) score -= 8;
//at times, both the header and reset vector's first opcode will match ...
//fallback and rely on info validity in these cases to determine more likely header.
//a valid checksum is the biggest indicator of a valid header.
if((checksum + complement) == 0xffff && (checksum != 0) && (complement != 0)) score += 4;
if(addr == 0x007fc0 && mapper == 0x20) score += 2; //0x20 is usually LoROM
if(addr == 0x00ffc0 && mapper == 0x21) score += 2; //0x21 is usually HiROM
if(addr == 0x007fc0 && mapper == 0x22) score += 2; //0x22 is usually ExLoROM
if(addr == 0x40ffc0 && mapper == 0x25) score += 2; //0x25 is usually ExHiROM
if(data[addr + Company] == 0x33) score += 2; //0x33 indicates extended header
if(data[addr + RomType] < 0x08) score++;
if(data[addr + RomSize] < 0x10) score++;
if(data[addr + RamSize] < 0x08) score++;
if(data[addr + CartRegion] < 14) score++;
if(score < 0) score = 0;
return score;
}
unsigned snes_information::gameboy_ram_size(const uint8_t *data, unsigned size) {
if(size < 512) return 0;
switch(data[0x0149]) {
case 0x00: return 0 * 1024;
case 0x01: return 8 * 1024;
case 0x02: return 8 * 1024;
case 0x03: return 32 * 1024;
case 0x04: return 128 * 1024;
case 0x05: return 128 * 1024;
default: return 128 * 1024;
}
}
bool snes_information::gameboy_has_rtc(const uint8_t *data, unsigned size) {
if(size < 512) return false;
if(data[0x0147] == 0x0f ||data[0x0147] == 0x10) return true;
return false;
}
}
#endif

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