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Add mapper 49.1, resembling the UNIF MAPR BMC-STREETFIGTER-GAME4IN1.

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This commit is contained in:
NewRisingSun
2026-03-13 10:41:02 +01:00
parent d180d7c7ad
commit b60fc16d15
1 changed files with 8 additions and 11 deletions
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13
src/boards/mmc3.c
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@@ -650,8 +650,6 @@ void Mapper47_Init(CartInfo *info) {
* BMC-STREETFIGTER-GAME4IN1 - Sic. $6000 set to $41 rather than $00 on power-up. * BMC-STREETFIGTER-GAME4IN1 - Sic. $6000 set to $41 rather than $00 on power-up.
*/ */
static uint8 isUNIF = 0;
static void M49PW(uint32 A, uint8 V) { static void M49PW(uint32 A, uint8 V) {
if (EXPREGS[0] & 1) { if (EXPREGS[0] & 1) {
V &= 0xF; V &= 0xF;
@@ -669,20 +667,19 @@ static void M49CW(uint32 A, uint8 V) {
} }
static DECLFW(M49Write) { static DECLFW(M49Write) {
if (A001B & 0x80) { if (submapper == 1 && A &0x800) V = EXPREGS[0] &0xC1 | V &~0xC1;
EXPREGS[0] = V; EXPREGS[0] = V;
FixMMC3PRG(MMC3_cmd); FixMMC3PRG(MMC3_cmd);
FixMMC3CHR(MMC3_cmd); FixMMC3CHR(MMC3_cmd);
}
} }
static void M49Reset(void) { static void M49Reset(void) {
EXPREGS[0] = isUNIF ? 0x41 : 0; EXPREGS[0] = submapper == 1? 0x41 : 0;
MMC3RegReset(); MMC3RegReset();
} }
static void M49Power(void) { static void M49Power(void) {
EXPREGS[0] = isUNIF ? 0x41 : 0; EXPREGS[0] = submapper == 1? 0x41 : 0;
M49Reset(); M49Reset();
GenMMC3Power(); GenMMC3Power();
SetWriteHandler(0x6000, 0x7FFF, M49Write); SetWriteHandler(0x6000, 0x7FFF, M49Write);
@@ -690,7 +687,7 @@ static void M49Power(void) {
} }
void Mapper49_Init(CartInfo *info) { void Mapper49_Init(CartInfo *info) {
isUNIF = 0; submapper = info->submapper;
GenMMC3_Init(info, 512, 256, 0, 0); GenMMC3_Init(info, 512, 256, 0, 0);
cwrap = M49CW; cwrap = M49CW;
pwrap = M49PW; pwrap = M49PW;
@@ -700,7 +697,7 @@ void Mapper49_Init(CartInfo *info) {
} }
void BMCSFGAME4IN1_Init(CartInfo *info) { void BMCSFGAME4IN1_Init(CartInfo *info) {
isUNIF = 1; submapper = 1;
GenMMC3_Init(info, 512, 512, 0, 0); GenMMC3_Init(info, 512, 512, 0, 0);
cwrap = M49CW; cwrap = M49CW;
pwrap = M49PW; pwrap = M49PW;