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BMC-FK23C backport for big multicarts

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retro-wertz
2017-05-09 18:26:12 +08:00
parent 8177370f4e
commit 80655f7ddf
1 changed files with 23 additions and 16 deletions
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39
src/boards/fk23c.c
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@@ -93,7 +93,8 @@ static uint64 CartList[] =
0x8fd9c235957a6df0LL, // 5-in-1 (K5003) [p1][!]-1125) (Ch).nes
0x0315924d00dd7807LL, // Mortal Kombat 30 Peoples (DH1043) (Ch).nes
0x4b99c39fdb66128aLL, // 4-in-1 (FK23C8078) (Ch) [p1][U][!].unf
0 /* Abandon all hope if the game has 0 in the lower 64-bits of its MD5 hash */
0x22a0ba5743191778LL, // Rockman 4 MI (Hack)
0 /* Abandon all hope if the game has 0 in the lower 64-bits of its MD5 hash */
};
int DetectPRGbonus(CartInfo *tmp) {
@@ -112,30 +113,37 @@ int DetectPRGbonus(CartInfo *tmp) {
}
static void BMCFK23CPW(uint32 A, uint8 V) {
/* Modified (c)May 2017 - Backport older implementations from FCEUmm
* to support big sized FK23CA carts which broke in latest commits.
*/
uint32 bank = (EXPREGS[1] & 0x1F);
uint32 hiblock = ((EXPREGS[0] & 8) << 4) | ((EXPREGS[0] & 0x80) << 1) | (UNIFchrrama ? ((EXPREGS[2] & 0x40) << 3) : 0);
uint32 hiblock = ((EXPREGS[0] & 8) << 4) | ((EXPREGS[0] & 0x80) << 1) | (UNIFchrrama ? ((EXPREGS[2] & 0x40) << 3) : 0);
uint32 block = (EXPREGS[1] & 0x60) | hiblock;
uint32 extra = (EXPREGS[3] & 2);
if ((EXPREGS[0] & 7) == 4)
setprg32(0x8000, EXPREGS[1] >> 1);
else if ((EXPREGS[0] & 7) == 3) {
setprg16(0x8000, EXPREGS[1]);
setprg16(0xC000, EXPREGS[1]);
} else {
switch (EXPREGS[0] & 7) {
case 4:
setprg32(0x8000,(EXPREGS[1] | block) >> 1);
break;
case 3:
setprg16(0x8000,(EXPREGS[1] | block));
setprg16(0xC000,(EXPREGS[1] | block));
break;
default:
if (EXPREGS[0] & 3) {
uint32 blocksize = (6) - (EXPREGS[0] & 3);
uint32 mask = (1 << blocksize) - 1;
V &= mask;
//V &= 63; //? is this a good idea?
V |= (EXPREGS[1] << 1);
setprg8(A, V);
V |= EXPREGS[1] << 1;
setprg8(A, (V | (hiblock << 1)));
} else
setprg8(A, (block << 1) | (V & prg_mask));
if (EXPREGS[3] & 2) {
setprg8(A, ((V & prg_mask) | (block << 1)));
if (extra) {
setprg8(0xC000, EXPREGS[4]);
setprg8(0xE000, EXPREGS[5]);
}
break;
}
setprg8r(0x10, 0x6000, A001B & 3);
}
@@ -191,10 +199,9 @@ static DECLFW(BMCFK23CWrite) {
}
}
if (is_BMCFK23CA) {
if (is_BMCFK23CA)
if(EXPREGS[3] & 2)
EXPREGS[0] &= ~7; // hacky hacky! if someone wants extra banking, then for sure doesn't want mode 4 for it! (allow to run A version boards on normal mapper)
}
}
static void BMCFK23CReset(void) {
@@ -253,7 +260,7 @@ void BMCFK23C_Init(CartInfo *info) {
AddExState(&dipswitch, 1, 0, "DPSW");
prg_bonus = DetectPRGbonus(info);
prg_mask = 0x7F >> (prg_bonus);
prg_mask = (0x7F >> prg_bonus);
}
void BMCFK23CA_Init(CartInfo *info) {
@@ -276,5 +283,5 @@ void BMCFK23CA_Init(CartInfo *info) {
AddExState(&dipswitch, 1, 0, "DPSW");
prg_bonus = DetectPRGbonus(info);
prg_mask = 0x7F >> (prg_bonus);
prg_mask = (0x7F >> prg_bonus);
}