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Mapper 351: Add NROM-64 mode

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NewRisingSun
2022-07-29 22:41:32 +02:00
parent 653e583695
commit d3a3cab2d9
1 changed files with 6 additions and 0 deletions
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6
src/boards/351.c
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@@ -68,6 +68,12 @@ static void sync () {
int chip =reg[2] &0x01 && CHRRAM? 0x10: 0x00;
if (reg[2] &0x10) { /* NROM mode */
if (reg[2] &0x08) { /* NROM-64 */
setprg8r(chip, 0x8000, prgOR);
setprg8r(chip, 0xA000, prgOR);
setprg8r(chip, 0xC000, prgOR);
setprg8r(chip, 0xE000, prgOR);
} else
if (reg[2] &0x04) { /* NROM-128 */
setprg16r(chip, 0x8000, prgOR >>1);
setprg16r(chip, 0xC000, prgOR >>1);