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Mapper 339: Add submapper 1

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NewRisingSun
2025-04-01 15:36:06 +02:00
committed by LibretroAdmin
parent bf72633444
commit 9dd3de6ea2
1 changed files with 4 additions and 1 deletions
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5
src/boards/bmck3006.c
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@@ -26,6 +26,8 @@
#include "mapinc.h"
#include "mmc3.h"
static uint8 submapper;
static void BMCK3006CW(uint32 A, uint8 V) {
setchr1(A, (V & 0x7F) | (EXPREGS[0] & 0x18) << 4);
}
@@ -34,7 +36,7 @@ static void BMCK3006PW(uint32 A, uint8 V) {
if (EXPREGS[0] & 0x20) { /* MMC3 mode */
setprg8(A, (V & 0x0F) | (EXPREGS[0] & 0x18) << 1);
} else {
if ((EXPREGS[0] & 0x07) == 0x06) { /* NROM-256 */
if ((EXPREGS[0] & 0x07) == 0x06 && submapper ==0 || EXPREGS[0] &4 && submapper ==1) { /* NROM-256 */
setprg32(0x8000, (EXPREGS[0] >> 1) & 0x0F);
} else { /* NROM-128 */
setprg16(0x8000, EXPREGS[0] & 0x1F);
@@ -61,6 +63,7 @@ static void BMCK3006Power(void) {
}
void BMCK3006_Init(CartInfo *info) {
submapper =info->submapper;
GenMMC3_Init(info, 512, 512, 8, 0);
pwrap = BMCK3006PW;
cwrap = BMCK3006CW;