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Mapper 134 fix

This commit is contained in:
Alexey 'Cluster' Avdyukhin 2023-10-02 22:57:04 +04:00
parent 1ffa4d7f0c
commit e0138e5bfd
1 changed files with 3 additions and 6 deletions
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9
src/boards/mmc3.cpp
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@ -871,13 +871,10 @@ static void M134PW(uint32 A, uint8 V) {
}
static void M134CW(uint32 A, uint8 V) {
/*
// CNROM mode. Unclear. Untested. Not compatible with some games.
// CNROM mode. Unclear. Untested.
if (EXPREGS[0] & 0x08)
setchr8(EXPREGS[2]);
else
*/
if (EXPREGS[1] & 0x40)
else if (EXPREGS[1] & 0x40)
setchr1(A, ((EXPREGS[0] & 0x20) << 4) | (V & 0x7F) | ((EXPREGS[1] & 0x30) << 3)); // 128KB mask
else
setchr1(A, ((EXPREGS[0] & 0x20) << 4) | (V & 0xFF) | ((EXPREGS[1] & 0x20) << 3)); // 256KB mask
@ -899,7 +896,7 @@ static DECLFW(M134Write) {
static void M134Power(void) {
EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
GenMMC3Power();
SetWriteHandler(0x6001, 0x7FFF, M134Write);
SetWriteHandler(0x6000, 0x7FFF, M134Write);
}
static void M134Reset(void) {