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https://git.checksum.fail/alec/bahamut.git
synced 2026-05-26 17:05:20 +00:00
Alec Murphy
42 lines
1.0 KiB
HolyC
42 lines
1.0 KiB
HolyC
U0 parseHeader(U8 *rom, ROMHeader *header)
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{
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I64 i;
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header->name = CAlloc(24);
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MemCpy(header->name, rom+0x7FC0, 20);
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i = StrLen(header->name)-1;
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while (header->name[i]==' ') { header->name[i]=NULL; i--; }
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header->type = rom[0x7fd5] & 0xf;
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header->speed = rom[0x7fd5] >> 4;
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header->chips = rom[0x7fd6];
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header->romSize = 0x400 << rom[0x7fd7];
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header->ramSize = 0x400 << rom[0x7fd8];
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header->hasSram = header->chips > 0;
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header->banks = header->romSize / 0x8000;
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header->sramSize = cond(header->hasSram, header->ramSize, 0);
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if (header->hasSram) sram = MAlloc(header->ramSize);
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}
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U0 LoROM(U8 *filename)
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{
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// LoROM loader
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MemSet(&header, NULL, sizeof(ROMHeader));
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I64 rom_length;
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rom = FileRead(filename, &rom_length);
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// skip copier header
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if (rom_length%1024)
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{
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rom += 512;
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rom_length -= 512;
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}
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parseHeader(rom, &header);
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if (header.romSize < rom_length)
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{
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"Incorrect romSize?\n";
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return;
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}
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} |