Mapper 14: use the modularized ASIC cores. Mapper 116: Add multicart variant.

This commit is contained in:
NewRisingSun
2025-09-06 13:12:15 +02:00
parent b5fff6c80f
commit 399daf7a61
3 changed files with 133 additions and 126 deletions

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@@ -18,10 +18,6 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* NES 2.0 Mapper 556
* Used for the for the 餓狼傳說 激鬥篇 HiK 7-in-1 (JY-215) multicart.
*/
#include "mapinc.h"
#include "asic_mmc1.h"
#include "asic_mmc3.h"
@@ -29,19 +25,33 @@
static uint8 submapper;
static uint8 reg;
static uint8 init;
static uint8 init; /* Games switch between ASICs expecting registers to keep their value, so initialize each ASIC only on the first switch and use this bitfield */
static uint8 game;
static SFORMAT StateRegs[] = {
static SFORMAT stateRegs[] = {
{ &reg, 1, "MODE" },
{ &init, 1, "INIT" },
{ 0 },
};
static SFORMAT stateRegsMulti[] = {
{ &game, 1, "GAME" },
{ 0 },
};
static void sync (void) {
int prgAND = 0x3F;
int chrAND = 0xFF;
int prgOR = 0x00 &~prgAND;
int chrOR = reg <<6 &0x100 &~chrAND;
int prgAND, chrAND, prgOR, chrOR;
if (submapper == 3) { /* First game is 256K+256K, the others 128K+128K */
prgAND = game? 0x0F: 0x1F;
chrAND = game? 0x7F: 0xFF;
prgOR = game <<4 &~prgAND;
chrOR = game <<7 &~chrAND;
} else {
prgAND = 0x3F;
chrAND = 0xFF;
prgOR = 0x00 &~prgAND;
chrOR = reg <<6 &0x100 &~chrAND;
}
if (reg &0x02) {
prgAND >>= 1;
prgOR >>= 1;
@@ -67,9 +77,12 @@ int Huang2_getPRGBank (uint8 bank) {
}
static void applyMode (uint8 clear) {
PPU_hook = NULL;
MapIRQHook = NULL;
GameHBIRQHook = NULL;
if (reg &0x02) {
MMC1_activate(clear && init &1, sync, MMC1_TYPE_MMC1B, submapper == 2? Huang2_getPRGBank: NULL, NULL, NULL, NULL);
MMC1_writeReg(0x8000, 0x80);
if (submapper != 1) MMC1_writeReg(0x8000, 0x80);
init &= ~1;
} else
if (reg &0x01) {
@@ -77,7 +90,7 @@ static void applyMode (uint8 clear) {
init &= ~2;
} else {
VRC2_activate(clear && init &4, sync, 0x01, 0x02, NULL, NULL, NULL, NULL);
if (init &4) {
if (init &4) { /* The earlier version of Somari needs specific VRC2 CHR register initialization */
VRC24_writeReg(0xB000, 0xFF); VRC24_writeReg(0xB001, 0xFF); VRC24_writeReg(0xB002, 0xFF); VRC24_writeReg(0xB003, 0xFF);
VRC24_writeReg(0xC000, 0xFF); VRC24_writeReg(0xC001, 0xFF); VRC24_writeReg(0xC002, 0xFF); VRC24_writeReg(0xC003, 0xFF);
VRC24_writeReg(0xD000, 0xFF); VRC24_writeReg(0xD001, 0xFF); VRC24_writeReg(0xD002, 0xFF); VRC24_writeReg(0xD003, 0xFF);
@@ -99,14 +112,17 @@ static DECLFW(writeReg) {
}
static void reset (void) {
reg = 0;
reg = 1;
init = 7;
if (++game == 1) ++game; /* First game is twice as large */
if (game >= ROM_size /8) game = 0;
applyMode(1);
}
static void power (void) {
reg = 0;
reg = 1;
init = 7;
game = 0;
SetReadHandler(0x8000, 0xFFFF, CartBR);
SetWriteHandler(0x4020, 0x5FFF, writeReg);
applyMode(1);
@@ -124,5 +140,6 @@ void UNLSL12_Init (CartInfo *info) {
info->Reset = reset;
info->Power = power;
GameStateRestore = restore;
AddExState(StateRegs, ~0, 0, 0);
AddExState(stateRegs, ~0, 0, 0);
if (submapper == 3) AddExState(stateRegsMulti, ~0, 0, 0);
}

101
src/boards/14.c Normal file
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@@ -0,0 +1,101 @@
/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2023
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "mapinc.h"
#include "asic_mmc3.h"
#include "asic_vrc2and4.h"
static uint8 reg;
static uint8 init; /* Games switch between ASICs expecting registers to keep their value, so initialize each ASIC only on the first switch and use this bitfield */
static void applyMode (uint8);
static SFORMAT StateRegs[] = {
{ &reg, 1, "MODE" },
{ &init, 1, "INIT" },
{ 0 },
};
static void sync (void) {
if (reg &0x02) {
MMC3_syncPRG(0x3F, 0x00);
MMC3_syncCHR(0x1FF, 0x00);
MMC3_syncMirror();
} else {
VRC24_syncPRG(0x3F, 0x00);
VRC24_syncCHR(0x1FF, 0x00);
VRC24_syncMirror();
}
}
int getCHRBank_MMC3 (uint8 bank) {
return MMC3_getCHRBank(bank) | reg <<(~bank &4? 5: ~bank &2? 3: 1) &0x100;
}
int getCHRBank_VRC2 (uint8 bank) {
return VRC24_getCHRBank(bank) | reg <<(~bank &4? 5: ~bank &2? 3: 1) &0x100;
}
static DECLFW(writeReg) {
uint8 previousReg = reg;
reg = V;
if ((previousReg ^V) &2)
applyMode(1);
else
sync();
}
static void applyMode (uint8 clear) {
PPU_hook = NULL;
MapIRQHook = NULL;
GameHBIRQHook = NULL;
if (reg &0x02) {
MMC3_activate(clear && init &1, sync, MMC3_TYPE_AX5202P, NULL, getCHRBank_MMC3, NULL, NULL);
init &= ~1;
} else {
VRC2_activate(clear && init &2, sync, 0x01, 0x02, NULL, getCHRBank_VRC2, NULL, NULL);
init &= ~2;
}
SetWriteHandler(0xA131, 0xA131, writeReg);
}
static void reset (void) {
reg = 0;
init = 3;
applyMode(1);
}
static void power (void) {
reg = 0;
init = 3;
applyMode(1);
}
static void restore (int version) {
applyMode(0);
}
void UNLSL1632_Init (CartInfo *info) {
MMC3_addExState();
VRC24_addExState();
info->Reset = reset;
info->Power = power;
GameStateRestore = restore;
AddExState(StateRegs, ~0, 0, 0);
}

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@@ -1,111 +0,0 @@
/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2005 CaH4e3
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* SL1632 2-in-1 protected board, similar to SL12
* Samurai Spirits Rex (Full)
*
*/
#include "mapinc.h"
#include "mmc3.h"
static uint8 chrcmd[8], prg0, prg1, bbrk, mirr, swap;
static SFORMAT StateRegs[] =
{
{ chrcmd, 8, "CHRC" },
{ &prg0, 1, "PRG0" },
{ &prg1, 1, "PRG1" },
{ &bbrk, 1, "BRK" },
{ &mirr, 1, "MIRR" },
{ &swap, 1, "SWAP" },
{ 0 }
};
static void Sync(void) {
int i;
setprg8(0x8000, prg0);
setprg8(0xA000, prg1);
setprg8(0xC000, ~1);
setprg8(0xE000, ~0);
for (i = 0; i < 8; i++)
setchr1(i << 10, chrcmd[i]);
setmirror(mirr ^ 1);
}
static void UNLSL1632CW(uint32 A, uint8 V) {
int cbase = (MMC3_cmd & 0x80) << 5;
int page0 = (bbrk & 0x08) << 5;
int page1 = (bbrk & 0x20) << 3;
int page2 = (bbrk & 0x80) << 1;
setchr1(cbase ^ 0x0000, page0 | (DRegBuf[0] & (~1)));
setchr1(cbase ^ 0x0400, page0 | DRegBuf[0] | 1);
setchr1(cbase ^ 0x0800, page0 | (DRegBuf[1] & (~1)));
setchr1(cbase ^ 0x0C00, page0 | DRegBuf[1] | 1);
setchr1(cbase ^ 0x1000, page1 | DRegBuf[2]);
setchr1(cbase ^ 0x1400, page1 | DRegBuf[3]);
setchr1(cbase ^ 0x1800, page2 | DRegBuf[4]);
setchr1(cbase ^ 0x1c00, page2 | DRegBuf[5]);
}
static DECLFW(UNLSL1632CMDWrite) {
if (A == 0xA131) {
bbrk = V;
}
if (bbrk & 2) {
FixMMC3PRG(MMC3_cmd);
FixMMC3CHR(MMC3_cmd);
if (A < 0xC000)
MMC3_CMDWrite(A, V);
else
MMC3_IRQWrite(A, V);
} else {
if ((A >= 0xB000) && (A <= 0xE003)) {
int ind = ((((A & 2) | (A >> 10)) >> 1) + 2) & 7;
int sar = ((A & 1) << 2);
chrcmd[ind] = (chrcmd[ind] & (0xF0 >> sar)) | ((V & 0x0F) << sar);
} else
switch (A & 0xF003) {
case 0x8000: prg0 = V; break;
case 0xA000: prg1 = V; break;
case 0x9000: mirr = V & 1; break;
}
Sync();
}
}
static void StateRestore(int version) {
if (bbrk & 2) {
FixMMC3PRG(MMC3_cmd);
FixMMC3CHR(MMC3_cmd);
} else
Sync();
}
static void UNLSL1632Power(void) {
GenMMC3Power();
SetWriteHandler(0x4100, 0xFFFF, UNLSL1632CMDWrite);
}
void UNLSL1632_Init(CartInfo *info) {
GenMMC3_Init(info, 256, 512, 0, 0);
cwrap = UNLSL1632CW;
info->Power = UNLSL1632Power;
GameStateRestore = StateRestore;
AddExState(&StateRegs, ~0, 0, 0);
}