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BMC-K-3088: Fix outer bank size

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retro-wertz
2019-07-11 20:55:01 +08:00
parent 429f6c4545
commit 748f27571d
1 changed files with 9 additions and 22 deletions
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31
src/boards/411120-c.c
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@@ -35,31 +35,18 @@ static uint8 reset_flag = 0;
static uint8 chip, isK3088; static uint8 chip, isK3088;
static void BMC411120CCW(uint32 A, uint8 V) { static void BMC411120CCW(uint32 A, uint8 V) {
if (CHRptr[1]) { uint32 mask = isK3088 ? 0x07 : 0x03;
chip = EXPREGS[0] & 7; setchr1(A, V | ((EXPREGS[0] & mask) << 7));
if (chip > CHRchip_max) chip &= CHRchip_max;
setchr1r(chip, A, V);
} else
setchr1(A, V | ((EXPREGS[0] & 3) << 7));
} }
static void BMC411120CPW(uint32 A, uint8 V) { static void BMC411120CPW(uint32 A, uint8 V) {
if (PRGptr[1]) { uint32 mask = isK3088 ? 0x07 : 0x03;
chip = EXPREGS[0] & 7; if (EXPREGS[0] & (isK3088 ? 8 : (8 | reset_flag))) { /* 32K Mode */
if (chip > PRGchip_max) chip &= PRGchip_max; if (A == 0x8000)
if (EXPREGS[0] & (isK3088 ? 8 : (8 | reset_flag))) { /* 32K Mode */ /* bit 0-1 of register should be used as outer bank regardless of banking modes */
if (A == 0x8000) setprg32(A, ((EXPREGS[0] >> 4) & 3) | ((EXPREGS[0] & mask) << 2));
setprg32r(chip, A, ((EXPREGS[0] >> 4) & 3)); } else /* MMC3 Mode */
} else /* MMC3 Mode */ setprg8(A, (V & 0x0F) | ((EXPREGS[0] & mask) << 4));
setprg8r(chip, A, (V & 0x0F));
} else {
if (EXPREGS[0] & (isK3088 ? 8 : (8 | reset_flag))) { /* 32K Mode */
if (A == 0x8000)
/* bit 0-1 of register should be used as outer bank regardless of banking modes */
setprg32(A, ((EXPREGS[0] >> 4) & 3) | ((EXPREGS[0] & 3) << 2));
} else /* MMC3 Mode */
setprg8(A, (V & 0x0F) | ((EXPREGS[0] & 3) << 4));
}
} }
static DECLFW(BMC411120CLoWrite) { static DECLFW(BMC411120CLoWrite) {