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Mapper 607: Correct for multiple UNROM games.

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NewRisingSun
2026-03-31 23:08:26 +02:00
parent bcd85e6cf3
commit ee613aec52
1 changed files with 2 additions and 2 deletions
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4
src/boards/607.c
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@@ -29,8 +29,8 @@ static DECLFR (readOB) {
static void sync () {
if (reg &0x10) { /* UNROM mode */
setprg16(0x8000, reg <<3 &0x08 | Latch_data &0x07);
setprg16(0xC000, reg <<3 &0x08 | 0x07);
setprg16(0x8000, reg <<3 &~0x07 | Latch_data &0x07);
setprg16(0xC000, reg <<3 &~0x07 | 0x07);
} else /* NROM-256 mode */
setprg32(0x8000, reg <<3 &0x04 | Latch_data >>1 &0x03);
SetReadHandler(0x8000, 0xFFFF, reg &0x0C? readOB: CartBR); /* 6000.2 and 6000.3 seem to select additional UNROM games. Without a cartridge that has them, the exact workings remain unknown for now. */