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Add mapper 446 using mapper emulation cores that can be included in other multi-ASIC mappers.

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NewRisingSun
2025-09-01 01:13:46 +02:00
parent 3544ff567e
commit a2fdeee096
57 changed files with 3063 additions and 441 deletions
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81
src/boards/432.c
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@@ -21,56 +21,67 @@
*/
#include "mapinc.h"
#include "mmc3.h"
#include "asic_mmc3.h"
static uint8 submapper;
static uint8 reg[2];
static uint8 pad;
static void M432CW(uint32 A, uint8 V) {
int chrAND = (EXPREGS[1] & 0x04) ? 0x7F : 0xFF;
int chrOR = (EXPREGS[1] << 7) & 0x080 | (EXPREGS[1] << 5) & 0x100 | (EXPREGS[1] << 4) & 0x200;
setchr1(A, (V & chrAND) | (chrOR & ~chrAND));
static DECLFR(readPad) {
return pad;
}
static void M432PW(uint32 A, uint8 V) {
int prgAND = (EXPREGS[1] & 0x02) ? 0x0F : 0x1F;
int prgOR = ((EXPREGS[1] << 4) & 0x10) | (EXPREGS[1] << 1) & 0x60;
if ((A < 0xC000) || (~EXPREGS[1] & 0x40)) setprg8(A, (V & prgAND) | (prgOR & ~prgAND) & (EXPREGS[1] &(submapper ==2? 0x20: 0x80)?~2:~0));
if ((A < 0xC000) && (EXPREGS[1] & 0x40)) setprg8(A | 0x4000, (V & prgAND) | (prgOR & ~prgAND) | (EXPREGS[1] &(submapper ==2? 0x20: 0x80)? 2: 0));
static void sync() {
int prgAND =reg[1] &0x02? 0x0F: 0x1F;
int chrAND =reg[1] &0x20 && submapper == 3? 0x1FF: reg[1] &0x04? 0x7F: 0xFF;
int prgOR =reg[1] <<4 &0x10 | reg[1] <<1 &0x60;
int chrOR =reg[1] <<7 &0x80 | reg[1] <<5 &0x100 | reg[1] <<4 &0x200;
MMC3_syncPRG(prgAND, prgOR &~prgAND);
MMC3_syncCHR(chrAND, chrOR &~chrAND);
MMC3_syncMirror();
SetReadHandler(0x8000, 0xFFFF, submapper == 1 && reg[1] &0x20 || submapper != 1 && reg[0] &0x01? readPad: CartBR);
}
static DECLFR(M432Read) {
if (submapper ==1? !!(EXPREGS[1] &0x20): !!(EXPREGS[0] &0x01)) return EXPREGS[2];
return CartBR(A);
static int getPRGBank(uint8 bank) {
if (reg[1] &0x40) {
int mask = reg[1] &(submapper == 2? 0x20: 0x80)? 3: 1;
return MMC3_getPRGBank(bank & 1) &~mask | bank &mask;
} else
return MMC3_getPRGBank(bank);
}
static DECLFW(M432Write) {
EXPREGS[A & 1] = V;
FixMMC3PRG(MMC3_cmd);
FixMMC3CHR(MMC3_cmd);
static int getCHRBank(uint8 bank) {
if (reg[1] &0x20 && submapper == 3)
return MMC3_getCHRBank(bank &6 | bank >>1 &1) <<1 | bank &1;
else
return MMC3_getCHRBank(bank);
}
static void M432Reset(void) {
EXPREGS[0] = 0;
EXPREGS[1] = 0;
EXPREGS[2]++;
MMC3RegReset();
static DECLFW(writeReg) {
if (submapper == 3 && reg[1] &0x80)
;
else {
reg[A &1] = V;
sync();
}
}
static void M432Power(void) {
EXPREGS[0] = 0;
EXPREGS[1] = 0;
EXPREGS[2] = 0;
GenMMC3Power();
SetReadHandler(0x8000, 0xFFFF, M432Read);
SetWriteHandler(0x6000, 0x7FFF, M432Write);
static void reset() {
reg[0] = reg[1] = 0;
++pad;
sync();
}
static void power() {
reg[0] = reg[1] = 0;
pad = 0;
MMC3_power();
}
void Mapper432_Init(CartInfo *info) {
submapper =info->submapper;
GenMMC3_Init(info, 256, 256, 0, 0);
cwrap = M432CW;
pwrap = M432PW;
info->Power = M432Power;
info->Reset = M432Reset;
AddExState(EXPREGS, 3, 0, "EXPR");
MMC3_init(info, sync, MMC3_TYPE_AX5202P, getPRGBank, getCHRBank, NULL, writeReg);
info->Power = power;
info->Reset = reset;
AddExState(reg, 2, 0, "EXPR");
}