mirror of
https://github.com/bsnes-emu/bsnes.git
synced 2025-02-23 22:52:34 +01:00
32a95a9761
byuu says: Nothing WS-related this time. First, I fixed expansion port device mapping. On first load, it was mapping the expansion port device too late, so it ended up not taking effect. I had to spin out the logic for that into Program::connectDevices(). This was proving to be quite annoying while testing eBoot (SNES-Hook simulation.) Second, I fixed the audio->set(Frequency, Latency) functions to take (uint) parameters from the configuration file, so the weird behavior around changing settings in the audio panel should hopefully be gone now. Third, I rewrote the interface->load,unload functions to call into the (Emulator)::System::load,unload functions. And I have those call out to Cartridge::load,unload. Before, this was inverted, and Cartridge::load() was invoking System::load(), which I felt was kind of backward. The Super Game Boy really didn't like this change, however. And it took me a few hours to power through it. Before, I had the Game Boy core dummying out all the interface->(load,save)Request calls, and having the SNES core make them for it. This is because the folder paths and IDs will be different between the two cores. I've redesigned things so that ICD2's Emulator::Interface overloads loadRequest and saveRequest, and translates the requests into new requests for the SuperFamicom core. This allows the Game Boy code to do its own loading for everything without a bunch of Super Game Boy special casing, and without any awkwardness around powering on with no cartridge inserted. This also lets the SNES side of things simply call into higher-level GameBoy::interface->load,save(id, stream) functions instead of stabbing at the raw underlying state inside of various Game Boy core emulation classes. So things are a lot better abstracted now.
835 lines
26 KiB
C++
835 lines
26 KiB
C++
struct SuperFamicomCartridge {
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SuperFamicomCartridge(const uint8* data, uint size, bool has_msu1 = false);
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string markup;
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//private:
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auto readHeader(const uint8* data, uint size) -> void;
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auto findHeader(const uint8* data, uint size) -> uint;
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auto scoreHeader(const uint8* data, uint size, uint addr) -> uint;
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enum HeaderField : uint {
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CartName = 0x00,
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Mapper = 0x15,
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RomType = 0x16,
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RomSize = 0x17,
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RamSize = 0x18,
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CartRegion = 0x19,
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Company = 0x1a,
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Version = 0x1b,
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Complement = 0x1c, //inverse checksum
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Checksum = 0x1e,
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ResetVector = 0x3c,
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};
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enum class Type : uint {
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SatellaviewBIOS,
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SufamiTurboBIOS,
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SuperGameBoy1BIOS,
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SuperGameBoy2BIOS,
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LoROM,
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HiROM,
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ExLoROM,
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ExHiROM,
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SuperFX,
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SA1,
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LoROMSatellaview,
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HiROMSatellaview,
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CampusChallenge92,
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Powerfest94,
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//invalid types
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Unknown,
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GameBoy,
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Satellaview,
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SufamiTurbo,
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};
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enum class Region : uint {
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NTSC,
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PAL,
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};
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enum class DSP1Type : uint {
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None,
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LoROM1MB,
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LoROM2MB,
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HiROM,
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};
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bool loaded = false; //is a base cartridge inserted?
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uint crc32 = 0; //crc32 of all cartridges (base+slot(s))
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uint rom_size = 0;
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uint ram_size = 0;
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bool firmware_required = false; //true if firmware is required for emulation
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bool firmware_appended = false; //true if firmware is present at end of data
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Type type = Type::Unknown;
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Region region = Region::NTSC;
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DSP1Type dsp1_type = DSP1Type::None;
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bool has_bsx_slot = false;
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bool has_superfx = false;
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bool has_sa1 = false;
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bool has_sharprtc = false;
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bool has_epsonrtc = false;
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bool has_sdd1 = false;
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bool has_spc7110 = false;
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bool has_cx4 = false;
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bool has_dsp1 = false;
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bool has_dsp2 = false;
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bool has_dsp3 = false;
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bool has_dsp4 = false;
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bool has_obc1 = false;
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bool has_st010 = false;
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bool has_st011 = false;
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bool has_st018 = false;
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};
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SuperFamicomCartridge::SuperFamicomCartridge(const uint8* data, uint size, bool has_msu1) {
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//skip copier header
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if((size & 0x7fff) == 512) data += 512, size -= 512;
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if(size < 0x8000) return;
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readHeader(data, size);
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if(type == Type::Unknown) return;
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if(type == Type::GameBoy) return;
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if(type == Type::Satellaview) return;
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if(type == Type::SufamiTurbo) return;
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const char* range = (rom_size > 0x200000) || (ram_size > 32 * 1024) ? "0000-7fff" : "0000-ffff";
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markup.append("board region=", region == Region::NTSC ? "ntsc" : "pal", "\n");
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//detect appended firmware
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if(has_dsp1) {
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firmware_required = true;
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if((size & 0x7fff) == 0x2000) {
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firmware_appended = true;
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rom_size -= 0x2000;
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}
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}
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if(has_dsp2) {
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firmware_required = true;
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if((size & 0x7fff) == 0x2000) {
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firmware_appended = true;
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rom_size -= 0x2000;
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}
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}
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if(has_dsp3) {
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firmware_required = true;
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if((size & 0x7fff) == 0x2000) {
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firmware_appended = true;
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rom_size -= 0x2000;
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}
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}
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if(has_dsp4) {
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firmware_required = true;
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if((size & 0x7fff) == 0x2000) {
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firmware_appended = true;
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rom_size -= 0x2000;
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}
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}
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if(has_st010) {
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firmware_required = true;
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if((size & 0xffff) == 0xd000) {
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firmware_appended = true;
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rom_size -= 0xd000;
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}
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}
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if(has_st011) {
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firmware_required = true;
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if((size & 0xffff) == 0xd000) {
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firmware_appended = true;
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rom_size -= 0xd000;
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}
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}
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if(has_st018) {
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firmware_required = true;
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if((size & 0x3ffff) == 0x28000) {
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firmware_appended = true;
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rom_size -= 0x28000;
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}
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}
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if(has_cx4) {
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firmware_required = true;
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if((rom_size & 0x7fff) == 0xc00) {
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firmware_appended = true;
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rom_size -= 0xc00;
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}
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}
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if(type == Type::SuperGameBoy1BIOS || type == Type::SuperGameBoy2BIOS) {
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firmware_required = true;
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if((rom_size & 0x7fff) == 0x100) {
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firmware_appended = true;
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rom_size -= 0x100;
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}
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}
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//end firmware detection
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if(type == Type::SatellaviewBIOS) {
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markup.append(
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" ram name=save.ram size=0x", hex(ram_size), "\n"
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" map address=10-1f:5000-5fff mask=0xf000\n"
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" mcc\n"
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" map address=00-0f:5000\n"
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" map=mcu address=00-3f,80-bf:8000-ffff mask=0x408000\n"
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" map=mcu address=40-7d,c0-ff:0000-ffff\n"
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" rom name=program.rom size=0x", hex(rom_size), "\n"
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" ram name=download.ram size=0x80000\n"
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" map address=00-3f,80-bf:6000-7fff mask=0xe000\n"
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" bsmemory\n"
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);
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}
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else if(type == Type::SufamiTurboBIOS) {
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markup.append(
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" rom name=program.rom size=0x", hex(rom_size), "\n"
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" map address=00-1f,80-9f:8000-ffff mask=0x8000\n"
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" sufamiturbo\n"
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" rom\n"
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" map address=20-3f,a0-bf:8000-ffff mask=0x8000\n"
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" ram\n"
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" map address=60-6f,e0-ef:0000-ffff\n"
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" sufamiturbo\n"
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" rom\n"
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" map address=40-5f,c0-df:0000-7fff mask=0x8000\n"
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" map address=40-5f,c0-df:8000-ffff mask=0x8000\n"
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" ram\n"
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" map address=70-7d,f0-ff:0000-ffff\n"
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);
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}
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else if(type == Type::SuperGameBoy1BIOS || type == Type::SuperGameBoy2BIOS) {
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markup.append(
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" rom name=program.rom size=0x", hex(rom_size), "\n"
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" map address=00-7d,80-ff:8000-ffff mask=0x8000\n"
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" map address=40-7d,c0-ff:0000-7fff mask=0x8000\n"
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" icd2 revision=1\n"
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" map address=00-3f,80-bf:6000-67ff,7000-7fff\n"
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" rom name=sgb.boot.rom size=0x100\n"
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);
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}
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else if(has_cx4) {
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markup.append(
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" hitachidsp model=HG51B169 frequency=20000000\n"
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" map address=00-3f,80-bf:6c00-6fff,7c00-7fff\n"
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" rom name=program.rom size=0x", hex(rom_size), "\n"
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" map address=00-3f,80-bf:8000-ffff mask=0x8000\n"
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" ram name=save.ram size=0\n"
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" map address=70-77:0000-7fff mask=0x8000\n"
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" drom name=cx4.data.rom size=0xc00\n"
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" dram name=cx4.data.ram size=0xc00 volatile\n"
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" map address=00-3f,80-bf:6000-6bff,7000-7bff mask=0xf000\n"
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);
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}
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else if(has_spc7110) {
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markup.append(
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" spc7110\n"
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" map address=00-3f,80-bf:4800-483f\n"
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" map address=50,58:0000-ffff\n"
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" map=mcu address=00-3f,80-bf:8000-ffff mask=0x800000\n"
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" map=mcu address=c0-ff:0000-ffff mask=0xc00000\n"
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" prom name=program.rom size=0x100000\n"
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" drom name=data.rom size=0x", hex(rom_size - 0x100000), "\n"
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" ram name=save.ram size=0x", hex(ram_size), "\n"
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" map address=00-3f,80-bf:6000-7fff mask=0xe000\n"
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);
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}
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else if(has_sdd1) {
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markup.append(
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" sdd1\n"
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" map address=00-3f,80-bf:4800-4807\n"
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" rom name=program.rom size=0x", hex(rom_size), "\n"
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" map address=00-3f,80-bf:8000-ffff mask=0x808000\n"
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" map address=c0-ff:0000-ffff\n"
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);
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if(ram_size > 0) markup.append(
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" ram name=save.ram size=0x", hex(ram_size), "\n"
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" map address=20-3f,a0-bf:6000-7fff mask=0xe000\n"
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" map address=70-7d:0000-7fff mask=0x8000\n"
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);
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}
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else if(type == Type::LoROM) {
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markup.append(
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" rom name=program.rom size=0x", hex(rom_size), "\n"
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" map address=00-7d,80-ff:8000-ffff mask=0x8000\n"
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" map address=40-6f,c0-ef:0000-7fff mask=0x8000\n"
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);
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if(ram_size > 0) markup.append(
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" ram name=save.ram size=0x", hex(ram_size), "\n"
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" map address=70-7d,f0-ff:", range, "\n"
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);
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}
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else if(type == Type::HiROM) {
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markup.append(
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" rom name=program.rom size=0x", hex(rom_size), "\n"
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" map address=00-3f,80-bf:8000-ffff\n"
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" map address=40-7f,c0-ff:0000-ffff\n"
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);
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if(ram_size > 0) markup.append(
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" ram name=save.ram size=0x", hex(ram_size), "\n"
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" map address=10-3f,90-bf:6000-7fff mask=0xe000\n"
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);
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}
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else if(type == Type::ExLoROM) {
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markup.append(
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" rom name=program.rom size=0x", hex(rom_size), "\n"
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" map address=00-3f,80-bf:8000-ffff mask=0x8000\n"
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" map address=40-7d:0000-ffff\n"
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);
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if(ram_size > 0) markup.append(
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" ram name=save.ram size=0x", hex(ram_size), "\n"
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" map address=20-3f,a0-bf:6000-7fff mask=0xe000\n"
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" map address=70-7d:0000-7fff mask=0x8000\n"
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);
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}
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else if(type == Type::ExHiROM) {
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markup.append(
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" rom name=program.rom size=0x", hex(rom_size), "\n"
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" map address=00-3f:8000-ffff base=0x400000\n"
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" map address=40-7d:0000-ffff base=0x400000\n"
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" map address=80-bf:8000-ffff mask=0xc00000\n"
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" map address=c0-ff:0000-ffff mask=0xc00000\n"
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);
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if(ram_size > 0) markup.append(
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" ram name=save.ram size=0x", hex(ram_size), "\n"
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" map address=20-3f,a0-bf:6000-7fff mask=0xe000\n"
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" map address=70-7d:", range, "\n"
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);
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}
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else if(type == Type::SuperFX) {
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markup.append(
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" superfx\n"
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" map address=00-3f,80-bf:3000-34ff\n"
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" rom name=program.rom size=0x", hex(rom_size), "\n"
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" map address=00-3f,80-bf:8000-ffff mask=0x8000\n"
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" map address=40-5f,c0-df:0000-ffff\n"
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);
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if(ram_size > 0) markup.append(
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" ram name=save.ram size=0x", hex(ram_size), "\n"
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" map address=00-3f,80-bf:6000-7fff size=0x2000\n"
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" map address=70-71,f0-f1:0000-ffff\n"
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);
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}
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else if(type == Type::SA1) {
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markup.append(
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" sa1\n"
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" map address=00-3f,80-bf:2200-23ff\n"
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" rom name=program.rom size=0x", hex(rom_size), "\n"
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" map address=00-3f,80-bf:8000-ffff mask=0x408000\n"
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" map address=c0-ff:0000-ffff\n"
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);
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if(ram_size > 0) markup.append(
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" bwram name=save.ram size=0x", hex(ram_size), "\n"
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" map address=00-3f,80-bf:6000-7fff size=0x2000\n"
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" map address=40-4f:0000-ffff\n"
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);
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markup.append(
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" iram id=internal size=0x800 volatile\n"
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" map address=00-3f,80-bf:3000-37ff size=0x800\n"
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);
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}
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else if(type == Type::LoROMSatellaview) {
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markup.append(
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" rom name=program.rom size=0x", hex(rom_size), "\n"
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" map address=00-1f:8000-ffff base=0x000000 mask=0x8000\n"
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" map address=20-3f:8000-ffff base=0x100000 mask=0x8000\n"
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" map address=80-9f:8000-ffff base=0x200000 mask=0x8000\n"
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" map address=a0-bf:8000-ffff base=0x100000 mask=0x8000\n"
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" ram name=save.ram size=0x", hex(ram_size), "\n"
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" map address=70-7d,f0-ff:0000-7fff mask=0x8000\n"
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" bsmemory\n"
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" map address=c0-ef:0000-ffff\n"
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);
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}
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else if(type == Type::HiROMSatellaview) {
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markup.append(
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" rom name=program.rom size=0x", hex(rom_size), "\n"
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" map address=00-1f,80-9f:8000-ffff\n"
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" map address=40-5f,c0-df:0000-ffff\n"
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" ram name=save.ram size=0x", hex(ram_size), "\n"
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" map address=20-3f,a0-bf:6000-7fff\n"
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" bsmemory\n"
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" map address=20-3f,a0-bf:8000-ffff\n"
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" map address=60-7f,e0-ff:0000-ffff\n"
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);
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}
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else if(type == Type::CampusChallenge92) {
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markup.append(
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" event=CC92 timer=360\n"
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" map address=c0,e0:0000\n"
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" map=mcu address=00-1f,80-9f:8000-ffff\n"
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" rom name=program.rom size=0x40000\n"
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" rom name=slot-1.rom size=0x80000\n"
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" rom name=slot-2.rom size=0x80000\n"
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" rom name=slot-3.rom size=0x80000\n"
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" ram name=save.ram size=0x2000 volatile\n"
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" map address=70-7d,f0-ff:0000-7fff mask=0x8000\n"
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" necdsp model=uPD7725 frequency=8000000\n"
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" map address=20-3f,a0-bf:8000-ffff mask=0x7fff\n"
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" prom name=dsp1.program.rom size=0x1800\n"
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" drom name=dsp1.data.rom size=0x800\n"
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" dram name=dsp1.data.ram size=0x200 volatile\n"
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);
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return;
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}
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else if(type == Type::Powerfest94) {
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markup.append(
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" event=PF94 timer=360\n"
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" map address=10,20:6000\n"
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" map=mcu address=00-3f,80-bf:8000-ffff\n"
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" map=mcu address=c0-ff:0000-ffff\n"
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" rom name=program.rom size=0x40000\n"
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" rom name=slot-1.rom size=0x80000\n"
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" rom name=slot-2.rom size=0x80000\n"
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" rom name=slot-3.rom size=0x100000\n"
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" ram name=save.ram size=0x2000 volatile\n"
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" map address=30-3f,b0-bf:6000-7fff mask=0xe000\n"
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" necdsp model=uPD7725 frequency=8000000\n"
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" map address=00-0f,80-8f:6000-7fff mask=0xfff\n"
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" prom name=dsp1.program.rom size=0x1800\n"
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" drom name=dsp1.data.rom size=0x800\n"
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" dram name=dsp1.data.ram size=0x200 volatile\n"
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);
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return;
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}
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|
|
if(has_sharprtc) {
|
|
markup.append(
|
|
" sharprtc\n"
|
|
" map address=00-3f,80-bf:2800-2801\n"
|
|
" ram name=rtc.ram size=0x10\n"
|
|
);
|
|
}
|
|
|
|
if(has_epsonrtc) {
|
|
markup.append(
|
|
" epsonrtc\n"
|
|
" map address=00-3f,80-bf:4840-4842\n"
|
|
" ram name=rtc.ram size=0x10\n"
|
|
);
|
|
}
|
|
|
|
if(has_obc1) {
|
|
markup.append(
|
|
" obc1\n"
|
|
" map address=00-3f,80-bf:6000-7fff mask=0xe000\n"
|
|
" ram name=save.ram size=0x2000\n"
|
|
);
|
|
}
|
|
|
|
if(has_dsp1) {
|
|
markup.append(
|
|
" necdsp model=uPD7725 frequency=8000000\n"
|
|
);
|
|
if(dsp1_type == DSP1Type::LoROM1MB) markup.append(
|
|
" map address=20-3f,a0-bf:8000-ffff mask=0x3fff\n"
|
|
);
|
|
if(dsp1_type == DSP1Type::LoROM2MB) markup.append(
|
|
" map address=60-6f,e0-ef:0000-7fff mask=0x3fff\n"
|
|
);
|
|
if(dsp1_type == DSP1Type::HiROM) markup.append(
|
|
" map address=00-1f,80-9f:6000-7fff mask=0xfff\n"
|
|
);
|
|
markup.append(
|
|
" prom name=dsp1b.program.rom size=0x1800\n"
|
|
" drom name=dsp1b.data.rom size=0x800\n"
|
|
" dram name=dsp1b.data.ram size=0x200 volatile\n"
|
|
);
|
|
}
|
|
|
|
if(has_dsp2) {
|
|
markup.append(
|
|
" necdsp model=uPD7725 frequency=8000000\n"
|
|
" map address=20-3f,a0-bf:8000-ffff mask=0x3fff\n"
|
|
" prom name=dsp2.program.rom size=0x1800\n"
|
|
" drom name=dsp2.data.rom size=0x800\n"
|
|
" dram name=dsp2.data.ram size=0x200 volatile\n"
|
|
);
|
|
}
|
|
|
|
if(has_dsp3) {
|
|
markup.append(
|
|
" necdsp model=uPD7725 frequency=8000000\n"
|
|
" map address=20-3f,a0-bf:8000-ffff mask=0x3fff\n"
|
|
" prom name=dsp3.program.rom size=0x1800\n"
|
|
" drom name=dsp3.data.rom size=0x800\n"
|
|
" dram name=dsp3.data.ram size=0x200 volatile\n"
|
|
);
|
|
}
|
|
|
|
if(has_dsp4) {
|
|
markup.append(
|
|
" necdsp model=uPD7725 frequency=8000000\n"
|
|
" map address=30-3f,b0-bf:8000-ffff mask=0x3fff\n"
|
|
" prom name=dsp4.program.rom size=0x1800\n"
|
|
" drom name=dsp4.data.rom size=0x800\n"
|
|
" dram name=dsp4.data.ram size=0x200 volatile\n"
|
|
);
|
|
}
|
|
|
|
if(has_st010) {
|
|
markup.append(
|
|
" necdsp model=uPD96050 frequency=11000000\n"
|
|
" map address=60-67,e0-e7:0000-3fff\n"
|
|
" prom name=st010.program.rom size=0xc000\n"
|
|
" drom name=st010.data.rom size=0x1000\n"
|
|
" dram name=save.ram size=0x1000\n"
|
|
" map address=68-6f,e8-ef:0000-7fff mask=0x8000\n"
|
|
);
|
|
}
|
|
|
|
if(has_st011) {
|
|
markup.append(
|
|
" necdsp model=uPD96050 frequency=15000000\n"
|
|
" map address=60-67,e0-e7:0000-3fff\n"
|
|
" prom name=st011.program.rom size=0xc000\n"
|
|
" drom name=st011.data.rom size=0x1000\n"
|
|
" dram name=save.ram size=0x1000\n"
|
|
" map address=68-6f,e8-ef:0000-7fff mask=0x8000\n"
|
|
);
|
|
}
|
|
|
|
if(has_st018) {
|
|
markup.append(
|
|
" armdsp frequency=21477272\n"
|
|
" map address=00-3f,80-bf:3800-38ff\n"
|
|
" prom name=st018.program.rom size=0x20000\n"
|
|
" drom name=st018.data.rom size=0x8000\n"
|
|
" dram name=save.ram size=0x4000\n"
|
|
);
|
|
}
|
|
|
|
if(has_msu1) {
|
|
markup.append(
|
|
" msu1\n"
|
|
" map address=00-3f,80-bf:2000-2007\n"
|
|
" rom name=msu1.rom\n"
|
|
);
|
|
}
|
|
}
|
|
|
|
auto SuperFamicomCartridge::readHeader(const uint8* data, uint size) -> void {
|
|
//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 = Type::GameBoy;
|
|
return;
|
|
}
|
|
}
|
|
|
|
const uint index = findHeader(data, size);
|
|
const uint8 mapperid = data[index + Mapper];
|
|
const uint8 rom_type = data[index + RomType];
|
|
const uint8 rom_size = data[index + RomSize];
|
|
const uint8 company = data[index + Company];
|
|
const uint8 regionid = data[index + CartRegion] & 0x7f;
|
|
|
|
const uint16 complement = data[index + Complement] | data[index + Complement + 1] << 8;
|
|
const uint16 checksum = data[index + Checksum] | data[index + Checksum + 1] << 8;
|
|
|
|
this->rom_size = size;
|
|
ram_size = 1024 << (data[index + RamSize] & 7);
|
|
if(ram_size == 1024) ram_size = 0; //no RAM present
|
|
if(rom_size == 0 && ram_size) ram_size = 0; //fix for Bazooka Blitzkrieg's malformed header (swapped ROM and RAM sizes)
|
|
|
|
//0, 1, 13 = NTSC; 2 - 12 = PAL
|
|
region = (regionid <= 1 || regionid >= 13) ? Region::NTSC : Region::PAL;
|
|
|
|
//detect BS-X flash carts
|
|
if(data[index + 0x13] == 0x00 || data[index + 0x13] == 0xff) {
|
|
if(data[index + 0x14] == 0x00) {
|
|
const uint8 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 = Type::Satellaview;
|
|
region = 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 = Type::SufamiTurboBIOS;
|
|
} else {
|
|
type = Type::SufamiTurbo;
|
|
}
|
|
region = 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 = Type::SuperGameBoy2BIOS;
|
|
return;
|
|
}
|
|
|
|
if(!memcmp(data + index, "Super GAMEBOY", 13)) {
|
|
type = Type::SuperGameBoy1BIOS;
|
|
return;
|
|
}
|
|
|
|
//detect competition carts
|
|
if(!memcmp(data + index, "\x00\x08\x22\x02\x1c\x00\x10\x00\x08\x65\x80\x84\x20\x00\x22\x25\x00\x83\x0c\x80\x10", 21)
|
|
&& complement == 0x0100 && checksum == 0x2d02 && (size == 0x1c0000 || size == 0x1c2000)) {
|
|
type = Type::CampusChallenge92; //dark title screen version
|
|
return;
|
|
}
|
|
|
|
if(!memcmp(data + index, "\xc9\x80\x80\x44\x15\x00\x62\x09\x29\xa0\x52\x70\x50\x12\x05\x35\x31\x63\xc0\x22\x01", 21)
|
|
&& complement == 0x2011 && checksum == 0xf8c0 && (size == 0x240000 || size == 0x242000)) {
|
|
type = Type::Powerfest94; //10,000 points version
|
|
return;
|
|
}
|
|
|
|
if(!memcmp(data + index, "PREHISTORIK MAN ", 21)
|
|
&& complement == 0xffff && checksum == 0x0000 && (size == 0x240000 || size == 0x242000)) {
|
|
type = Type::Powerfest94; //1,000,000 points version
|
|
return;
|
|
}
|
|
|
|
//detect presence of BS-X flash cartridge connector (reads extended header information)
|
|
if(data[index - 14] == 'Z') {
|
|
if(data[index - 11] == 'J') {
|
|
uint8 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 = Type::SatellaviewBIOS;
|
|
region = Region::NTSC; //BS-X only released in Japan
|
|
return; //RAM size handled internally by load_cart_bsx() -> BSXCart class
|
|
} else {
|
|
type = (index == 0x7fc0 ? Type::LoROMSatellaview : Type::HiROMSatellaview);
|
|
region = Region::NTSC; //BS-X slotted cartridges only released in Japan
|
|
}
|
|
} else {
|
|
//standard cart
|
|
if(index == 0x7fc0 && size >= 0x401000) {
|
|
type = Type::ExLoROM;
|
|
} else if(index == 0x7fc0 && mapperid == 0x32) {
|
|
type = Type::ExLoROM;
|
|
} else if(index == 0x7fc0) {
|
|
type = Type::LoROM;
|
|
} else if(index == 0xffc0) {
|
|
type = Type::HiROM;
|
|
} else if(index == 0x40ffc0) {
|
|
type = Type::ExHiROM;
|
|
} else {
|
|
type = Type::Unknown;
|
|
return;
|
|
}
|
|
}
|
|
|
|
if(mapperid == 0x20 && (rom_type == 0x13 || rom_type == 0x14 || rom_type == 0x15 || rom_type == 0x1a)) {
|
|
has_superfx = true;
|
|
type = Type::SuperFX;
|
|
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;
|
|
type = Type::SA1;
|
|
}
|
|
|
|
if(mapperid == 0x35 && rom_type == 0x55) {
|
|
has_sharprtc = 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_epsonrtc = (rom_type == 0xf9);
|
|
}
|
|
|
|
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_type = DSP1Type::LoROM1MB;
|
|
} else if((mapperid & 0x2f) == 0x20) {
|
|
dsp1_type = DSP1Type::LoROM2MB;
|
|
} else if((mapperid & 0x2f) == 0x21) {
|
|
dsp1_type = DSP1Type::HiROM;
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
auto SuperFamicomCartridge::findHeader(const uint8* data, uint size) -> uint {
|
|
uint score_lo = scoreHeader(data, size, 0x007fc0);
|
|
uint score_hi = scoreHeader(data, size, 0x00ffc0);
|
|
uint score_ex = scoreHeader(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;
|
|
}
|
|
}
|
|
|
|
auto SuperFamicomCartridge::scoreHeader(const uint8* data, uint size, uint addr) -> uint {
|
|
if(size < addr + 64) return 0; //image too small to contain header at this location?
|
|
int score = 0;
|
|
|
|
uint16 resetvector = data[addr + ResetVector] | (data[addr + ResetVector + 1] << 8);
|
|
uint16 checksum = data[addr + Checksum ] | (data[addr + Checksum + 1] << 8);
|
|
uint16 complement = data[addr + Complement ] | (data[addr + Complement + 1] << 8);
|
|
|
|
uint8 resetop = data[(addr & ~0x7fff) | (resetvector & 0x7fff)]; //first opcode executed upon reset
|
|
uint8 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;
|
|
}
|