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Mapper 45 fixes

This commit is contained in:
Alexey 'Cluster' Avdyukhin 2023-10-26 23:19:38 +04:00
parent 33aca22af2
commit 764e1ebd76
1 changed files with 9 additions and 17 deletions
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26
src/boards/mmc3.cpp
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@ -498,27 +498,19 @@ void Mapper44_Init(CartInfo *info) {
// ---------------------------- Mapper 45 -------------------------------
static void M45CW(uint32 A, uint8 V) {
if (!UNIFchrrama) {
uint32 NV = V;
if (EXPREGS[2] & 8)
NV &= (1 << ((EXPREGS[2] & 7) + 1)) - 1;
else
if (EXPREGS[2])
NV &= 0; // hack ;( don't know exactly how it should be
NV |= EXPREGS[0] | ((EXPREGS[2] & 0xF0) << 4);
setchr1(A, NV);
} else
// setchr8(0); // i don't know what cart need this, but a new one need other lol
setchr1(A, V);
uint32 NV = V;
const int mask = ((EXPREGS[2] & 0x0F) > 7)
? ((1 << (EXPREGS[2] & 0x0F) << 3) - 1)
: 0;
NV |= (EXPREGS[0] & mask) | ((EXPREGS[2] & 0xF0) << 4);
setchr1(A, NV);
}
static void M45PW(uint32 A, uint8 V) {
uint32 MV = V & ((EXPREGS[3] & 0x3F) ^ 0x3F);
MV |= EXPREGS[1];
if(UNIFchrrama)
MV |= ((EXPREGS[2] & 0x40) << 2);
uint32 MV = V;
const int mask = (EXPREGS[3] & 0x3F) ^ 0x3F;
MV |= (EXPREGS[1] & 0x3F & mask) | (EXPREGS[1] & 0xC0);
setprg8(A, MV);
// FCEU_printf("1:%02x 2:%02x 3:%02x A=%04x V=%03x\n",EXPREGS[1],EXPREGS[2],EXPREGS[3],A,MV);
}
static DECLFW(M45Write) {