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Add support for K-42001, make mapper 314 reset to menu.

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This commit is contained in:
NewRisingSun
2021-10-22 22:16:05 +02:00
parent 5a10da375e
commit aa8108a4e3
1 changed files with 16 additions and 5 deletions
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21
src/boards/bmc64in1nr.c
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@@ -31,7 +31,7 @@ static SFORMAT StateRegs[] =
};
static void Sync(void) {
if (regs[0] & 0x80) {
if (regs[0] & 0x80) { /* NROM mode */
if (regs[1] & 0x80)
setprg32(0x8000, regs[1] & 0x1F);
else {
@@ -39,9 +39,9 @@ static void Sync(void) {
setprg16(0x8000, bank);
setprg16(0xC000, bank);
}
} else {
int bank = ((regs[1] & 0x1f) << 1) | ((regs[1] >> 6) & 1);
setprg16(0xC000, bank);
} else { /* UNROM mode */
setprg16(0x8000, regs[1] <<1 | regs[3] &7);
setprg16(0xC000, regs[1] <<1 | 7);
}
if (regs[0] & 0x20)
setmirror(MI_H);
@@ -51,6 +51,8 @@ static void Sync(void) {
}
static DECLFW(BMC64in1nrWriteLo) {
A &=3;
if (A ==3) A =1; /* K-42001's "Aladdin III" */
regs[A & 3] = V;
Sync();
}
@@ -65,17 +67,26 @@ static void BMC64in1nrPower(void) {
regs[1] = 0x43;
regs[2] = regs[3] = 0;
Sync();
SetWriteHandler(0x5000, 0x5003, BMC64in1nrWriteLo);
SetWriteHandler(0x5000, 0x5FFF, BMC64in1nrWriteLo);
SetWriteHandler(0x8000, 0xFFFF, BMC64in1nrWriteHi);
SetReadHandler(0x8000, 0xFFFF, CartBR);
}
static void BMC64in1nrReset(void) {
/* Reset returns to menu */
regs[0] = 0x80;
regs[1] = 0x43;
regs[2] = regs[3] = 0;
Sync();
}
static void StateRestore(int version) {
Sync();
}
void BMC64in1nr_Init(CartInfo *info) {
info->Power = BMC64in1nrPower;
info->Reset = BMC64in1nrReset;
AddExState(&StateRegs, ~0, 0, 0);
GameStateRestore = StateRestore;
}