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struct PCEngine : Cartridge {
auto name() -> string override { return "PC Engine"; }
auto extensions() -> vector<string> override { return {"pce"}; }
auto load(string location) -> bool override;
auto save(string location) -> bool override;
auto analyze(vector<u8>& rom) -> string;
};
auto PCEngine::load(string location) -> bool {
vector<u8> rom;
if(directory::exists(location)) {
append(rom, {location, "program.rom"});
} else if(file::exists(location)) {
rom = Cartridge::read(location);
}
if(!rom) return false;
this->location = location;
this->manifest = analyze(rom);
auto document = BML::unserialize(manifest);
if(!document) return false;
pak = new vfs::directory;
pak->setAttribute("title", document["game/title"].string());
pak->setAttribute("region", document["game/region"].string());
pak->setAttribute("board", document["game/board"].string());
pak->append("manifest.bml", manifest);
pak->append("program.rom", rom);
if(auto node = document["game/board/memory(type=RAM,content=Save)"]) {
Medium::load(node, ".ram");
}
if(auto node = document["game/board/memory(type=RAM,content=Dynamic)"]) {
Medium::load(node, ".dram");
}
if(auto node = document["game/board/memory(type=RAM,content=Work)"]) {
Medium::load(node, ".wram");
}
return true;
}
auto PCEngine::save(string location) -> bool {
auto document = BML::unserialize(manifest);
if(auto node = document["game/board/memory(type=RAM,content=Save)"]) {
Medium::save(node, ".ram");
}
return true;
}
auto PCEngine::analyze(vector<u8>& data) -> string {
if((data.size() & 0x1fff) == 512) {
//remove header if present
memory::move(&data[0], &data[512], data.size() - 512);
data.resize(data.size() - 512);
}
string digest = Hash::SHA256(data).digest();
string region = "NTSC-U";
string board = "Linear";
if(data.size() == 0x60000) board = "Split";
if(data.size() == 0x280000) board = "Banked";
//Populous
if(digest == "16a796634a2b3da417a775cb64ffa3322ad7baf901c288934d28df967f7977f6") board = "RAM", region = "NTSC-J";
if(digest == "bfc2e6dd19f2cb642d3a7bd149b9a5eb5a8007f0f1c626eb62ded2a1f609814e") board = "RAM", region = "NTSC-J";
//Ten no Koe Bank
if(digest == "16d43e32b34ed40b0a59f4122370f4d973af33a6122c9ccbfab6bb21cf36f1b3") board = "RAM";
//PC Engine System Card 1.00
if(digest == "afe9f27f91ac918348555b86298b4f984643eafa2773196f2c5441ea84f0c3bb") board = "System Card", region = "NTSC-J";
//PC Engine System Card 2.00
if(digest == "909f2153e624b76392684434ba5aa3e394cbba0318a0dda350140cb61ce9bc49") board = "System Card", region = "NTSC-J";
//PC Engine System Card 2.10
if(digest == "0deb13845c7e44ea78a25bbbe324afd60a0ec29ea5a4cf5780349f1598d24cd3") board = "System Card", region = "NTSC-J";
//PC Engine Super System Card 3.00
//PC Engine Arcade Card Duo
//PC Engine Arcade Card Pro
//note: because all three cards use the same ROM image, it is not possible to distinguish them here.
//since the Arcade Card Pro is the most capable card, and is fully backward compatible, that is chosen here.
if(digest == "e11527b3b96ce112a037138988ca72fd117a6b0779c2480d9e03eaebece3d9ce") board = "Arcade Card Pro", region = "NTSC-J";
//TurboGrafx System Card 2.00
if(digest == "edba5be43803b180e1d64ca678c3f8bdbf07180c9e2a65a5db69ad635951e6cc") board = "System Card", region = "NTSC-U";
//TurboGrafx Super System Card 3.00
if(digest == "cadac2725711b3c442bcf237b02f5a5210c96f17625c35fa58f009e0ed39e4db") board = "Super System Card", region = "NTSC-U";
string s;
s += "game\n";
s +={" sha256: ", digest, "\n"};
s +={" name: ", Medium::name(location), "\n"};
s +={" title: ", Medium::name(location), "\n"};
s +={" region: ", region, "\n"};
s +={" board: ", board, "\n"};
s += " memory\n";
s += " type: ROM\n";
s +={" size: 0x", hex(data.size()), "\n"};
s += " content: Program\n";
if(board == "RAM") {
s += " memory\n";
s += " type: RAM\n";
s += " size: 0x8000\n";
s += " content: Save\n";
}
if(board == "Super System Card" || board == "Arcade Card Pro") {
s += " memory\n";
s += " type: RAM\n";
s += " size: 0x30000\n";
s += " content: Work\n";
s += " volatile\n";
}
if(board == "Arcade Card Duo" || board == "Arcade Card Pro") {
s += " memory\n";
s += " type: RAM\n";
s += " size: 0x200000\n";
s += " content: Dynamic\n";
s += " volatile\n";
}
return s;
}
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