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Mapper 530: Update to use modular VRC2/VRC4 emulation.

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This commit is contained in:
NewRisingSun
2025-04-10 09:49:19 +02:00
committed by LibretroAdmin
parent b800c05db5
commit c57a56f43a
2 changed files with 55 additions and 116 deletions
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55
src/boards/530.c Normal file
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/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2025 NewRisingSun
*
* 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 "vrc2and4.h"
static void sync () {
VRC24_syncPRG(0x01F, 0x000);
VRC24_syncCHR(0x1FF, 0x000);
VRC24_syncMirror();
}
int UNLAX5705_getPRGBank(int bank) {
int result =VRC24_getPRGBank(bank);
return result <<2 &0x8 | result >>2 &0x2 | result &~0xA;
}
int UNLAX5705_getCHRBank(int bank) {
int result =VRC24_getCHRBank(bank);
return result <<1 &0x40 | result >>1 &0x20 | result &~0x60;
}
DECLFW(UNLAX5705_unscrambleAddress) {
VRC24_writeReg(A &~0x1000 | A <<9 &0x1000, V);
}
void UNLAX5705_power (void) {
VRC24_power();
SetWriteHandler(0x8000, 0xFFFF, UNLAX5705_unscrambleAddress);
}
void UNLAX5705_Init (CartInfo *info) {
VRC24_init(info, sync, 0x01, 0x02, 1, 1, 0);
info->Power =UNLAX5705_power;
VRC24_GetPRGBank =UNLAX5705_getPRGBank;
VRC24_GetCHRBank =UNLAX5705_getCHRBank;
}

116
src/boards/ax5705.c
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/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2007 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
*
* Super Bros. Pocker Mali (VRC4 mapper)
*/
#include "mapinc.h"
static uint8 IRQCount; /*, IRQPre; */
static uint8 IRQa;
static uint8 prg_reg[2];
static uint8 chr_reg[8];
static uint8 mirr;
static SFORMAT StateRegs[] =
{
{ &IRQCount, 1, "IRQC" },
{ &IRQa, 1, "IRQA" },
{ prg_reg, 2, "PRG" },
{ chr_reg, 8, "CHR" },
{ &mirr, 1, "MIRR" },
{ 0 }
};
#if 0
static void UNLAX5705IRQ(void) {
if(IRQa) {
IRQCount++;
if(IRQCount>=238) {
X6502_IRQBegin(FCEU_IQEXT);
/* IRQa=0; */
}
}
}
#endif
static void Sync(void) {
int i;
setprg8(0x8000, prg_reg[0]);
setprg8(0xA000, prg_reg[1]);
setprg8(0xC000, ~1);
setprg8(0xE000, ~0);
for (i = 0; i < 8; i++)
setchr1(i << 10, chr_reg[i]);
setmirror(mirr ^ 1);
}
static DECLFW(UNLAX5705Write) {
#if 0
if((A>=0xA008)&&(A<=0xE003)) {
int ind=(((A>>11)-6)|(A&1))&7;
int sar=((A&2)<<1);
chr_reg[ind]=(chr_reg[ind]&(0xF0>>sar))|((V&0x0F)<<sar);
SyncChr();
} else
#endif
switch (A & 0xF00F) {
case 0x8000: prg_reg[0] = ((V & 2) << 2) | ((V & 8) >> 2) | (V & 5); break; /* EPROM dump have mixed PRG and CHR banks, data lines to mapper seems to be mixed */
case 0x8008: mirr = V & 1; break;
case 0xA000: prg_reg[1] = ((V & 2) << 2) | ((V & 8) >> 2) | (V & 5); break;
case 0xA008: chr_reg[0] = (chr_reg[0] & 0xF0) | (V & 0x0F); break;
case 0xA009: chr_reg[0] = (chr_reg[0] & 0x0F) | ((((V & 4) >> 1) | ((V & 2) << 1) | (V & 0x09)) << 4); break;
case 0xA00A: chr_reg[1] = (chr_reg[1] & 0xF0) | (V & 0x0F); break;
case 0xA00B: chr_reg[1] = (chr_reg[1] & 0x0F) | ((((V & 4) >> 1) | ((V & 2) << 1) | (V & 0x09)) << 4); break;
case 0xC000: chr_reg[2] = (chr_reg[2] & 0xF0) | (V & 0x0F); break;
case 0xC001: chr_reg[2] = (chr_reg[2] & 0x0F) | ((((V & 4) >> 1) | ((V & 2) << 1) | (V & 0x09)) << 4); break;
case 0xC002: chr_reg[3] = (chr_reg[3] & 0xF0) | (V & 0x0F); break;
case 0xC003: chr_reg[3] = (chr_reg[3] & 0x0F) | ((((V & 4) >> 1) | ((V & 2) << 1) | (V & 0x09)) << 4); break;
case 0xC008: chr_reg[4] = (chr_reg[4] & 0xF0) | (V & 0x0F); break;
case 0xC009: chr_reg[4] = (chr_reg[4] & 0x0F) | ((((V & 4) >> 1) | ((V & 2) << 1) | (V & 0x09)) << 4); break;
case 0xC00A: chr_reg[5] = (chr_reg[5] & 0xF0) | (V & 0x0F); break;
case 0xC00B: chr_reg[5] = (chr_reg[5] & 0x0F) | ((((V & 4) >> 1) | ((V & 2) << 1) | (V & 0x09)) << 4); break;
case 0xE000: chr_reg[6] = (chr_reg[6] & 0xF0) | (V & 0x0F); break;
case 0xE001: chr_reg[6] = (chr_reg[6] & 0x0F) | ((((V & 4) >> 1) | ((V & 2) << 1) | (V & 0x09)) << 4); break;
case 0xE002: chr_reg[7] = (chr_reg[7] & 0xF0) | (V & 0x0F); break;
case 0xE003: chr_reg[7] = (chr_reg[7] & 0x0F) | ((((V & 4) >> 1) | ((V & 2) << 1) | (V & 0x09)) << 4); break;
#if 0
case 0x800A: X6502_IRQEnd(FCEU_IQEXT); IRQa=0; break;
case 0xE00B: X6502_IRQEnd(FCEU_IQEXT); IRQa=IRQCount=V; /*if(scanline<240) IRQCount-=8; else IRQCount+=4;*/ break;
#endif
}
Sync();
}
static void UNLAX5705Power(void) {
Sync();
SetReadHandler(0x8000, 0xFFFF, CartBR);
SetWriteHandler(0x8000, 0xFFFF, UNLAX5705Write);
}
static void StateRestore(int version) {
Sync();
}
void UNLAX5705_Init(CartInfo *info) {
info->Power = UNLAX5705Power;
/* GameHBIRQHook=UNLAX5705IRQ; */
GameStateRestore = StateRestore;
AddExState(&StateRegs, ~0, 0, 0);
}