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Mapper134: Update and add support for UNL-T4A54A unif board

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retro-wertz
2019-06-27 12:22:07 +08:00
parent 4e1bdaaed0
commit 83b2f99527
2 changed files with 12 additions and 4 deletions
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15
src/boards/mmc3.c
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@@ -905,13 +905,19 @@ void Mapper119_Init(CartInfo *info) {
}
/* ---------------------------- Mapper 134 ------------------------------ */
/* ---------------------------- UNL-T4A54A ------------------------------ */
/* UNL-T4A54A, functionally the same as mapper 134.
* Writes @ $6801. Menu @ prg $20000, chr $00000 */
static void M134PW(uint32 A, uint8 V) {
setprg8(A, (V & 0x1F) | ((EXPREGS[0] & 2) << 4));
uint8 mask = (EXPREGS[0] & 0x04) ? 0x0F : 0x1F;
setprg8r(PRGptr[1] ? (EXPREGS[0] & 3) : 0, A, (V & mask) | ((EXPREGS[0] & 3) << 4));
}
static void M134CW(uint32 A, uint8 V) {
setchr1(A, (V & 0xFF) | ((EXPREGS[0] & 0x20) << 3));
uint8 mask = (EXPREGS[0] & 0x04) ? 0x7F : 0xFF;
setchr1r(PRGptr[1] ? (EXPREGS[0] & 0x30) >> 4 : 0, A, (V & mask) | ((EXPREGS[0] & 0x30) << 3));
}
static DECLFW(M134Write) {
@@ -921,13 +927,14 @@ static DECLFW(M134Write) {
}
static void M134Power(void) {
EXPREGS[0] = 0;
EXPREGS[0] = 0x01;
GenMMC3Power();
SetWriteHandler(0x6001, 0x6001, M134Write);
SetWriteHandler(0x6801, 0x6801, M134Write);
}
static void M134Reset(void) {
EXPREGS[0] = 0;
EXPREGS[0] = 0x01;
MMC3RegReset();
}