mirror of https://github.com/bsnes-emu/bsnes.git
70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
struct MegaDriveCartridge {
|
|
MegaDriveCartridge(string location, uint8_t* data, uint size);
|
|
|
|
string manifest;
|
|
|
|
//private:
|
|
struct Information {
|
|
} information;
|
|
};
|
|
|
|
MegaDriveCartridge::MegaDriveCartridge(string location, uint8_t* data, uint size) {
|
|
if(size < 0x200) return;
|
|
|
|
string ramMode = "none";
|
|
|
|
uint32_t ramFrom = 0;
|
|
ramFrom |= data[0x01b4] << 24;
|
|
ramFrom |= data[0x01b5] << 16;
|
|
ramFrom |= data[0x01b6] << 8;
|
|
ramFrom |= data[0x01b7] << 0;
|
|
|
|
uint32_t ramTo = 0;
|
|
ramTo |= data[0x01b8] << 24;
|
|
ramTo |= data[0x01b9] << 16;
|
|
ramTo |= data[0x01ba] << 8;
|
|
ramTo |= data[0x01bb] << 0;
|
|
|
|
if(!(ramFrom & 1) && !(ramTo & 1)) ramMode = "lo";
|
|
if( (ramFrom & 1) && (ramTo & 1)) ramMode = "hi";
|
|
if(!(ramFrom & 1) && (ramTo & 1)) ramMode = "word";
|
|
|
|
uint32_t ramSize = ramTo - ramFrom + 1;
|
|
if(ramMode == "lo") ramSize = (ramTo >> 1) - (ramFrom >> 1) + 1;
|
|
if(ramMode == "hi") ramSize = (ramTo >> 1) - (ramFrom >> 1) + 1;
|
|
if(ramMode == "word") ramSize = ramTo - ramFrom + 1;
|
|
if(ramMode != "none") ramSize = bit::round(min(0x20000, ramSize));
|
|
|
|
string_vector regions;
|
|
string region = slice((const char*)&data[0x1f0], 0, 16).trimRight(" ");
|
|
if(!regions) {
|
|
if(region == "JAPAN" ) regions.append("ntsc-j");
|
|
if(region == "EUROPE") regions.append("pal");
|
|
}
|
|
if(!regions) {
|
|
if(region.find("J")) regions.append("ntsc-j");
|
|
if(region.find("U")) regions.append("ntsc-u");
|
|
if(region.find("E")) regions.append("pal");
|
|
if(region.find("W")) regions.append("ntsc-j", "ntsc-u", "pal");
|
|
}
|
|
if(!regions && region.size() == 1) {
|
|
uint8_t field = region.hex();
|
|
if(field & 0x01) regions.append("ntsc-j");
|
|
if(field & 0x04) regions.append("ntsc-u");
|
|
if(field & 0x08) regions.append("pal");
|
|
}
|
|
if(!regions) {
|
|
regions.append("ntsc-j");
|
|
}
|
|
|
|
manifest.append("board region=", regions.left(), "\n");
|
|
manifest.append(" rom name=program.rom size=0x", hex(size), "\n");
|
|
if(ramSize && ramMode != "none")
|
|
manifest.append(" ram name=save.ram size=0x", hex(ramSize), " offset=0x", hex(ramFrom), " mode=", ramMode, "\n");
|
|
manifest.append("\n");
|
|
manifest.append("information\n");
|
|
manifest.append(" title: ", Location::prefix(location), "\n");
|
|
manifest.append("\n");
|
|
manifest.append("note: heuristically generated by icarus\n");
|
|
}
|