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superfx: fall back to using regular RAM size if extended header is empty (fixes #346)

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Devin Acker 2022-11-19 15:37:11 -05:00
parent 1ba3486fdb
commit d2d3802307
1 changed files with 6 additions and 2 deletions
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8
common/nall/snes/cartridge.hpp
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@ -701,8 +701,12 @@ void SNESCartridge::read_header(const uint8_t *data, unsigned size) {
if(mapperid == 0x20 && (rom_type == 0x13 || rom_type == 0x14 || rom_type == 0x15 || rom_type == 0x1a)) {
mapper = SuperFXROM;
if(company == 0x33) {
ram_size = 1024 << min(8, data[index - 3] & 15);
if(ram_size == 1024) ram_size = 0;
if(data[index - 3] != 0)
{
// determine RAM size from the expanded header, if present
ram_size = 1024 << min(8, data[index - 3] & 15);
if(ram_size == 1024) ram_size = 0;
}
} else {
// Star Fox has no extended header but still needs RAM
ram_size = 0x8000;