Combine the very similar mappers 126/422/534/BS400/BS4040 into one common source code file. Rewrite for accuracy and compatibility with all known game dumps. Replace FUTURE KIDS hack with correct CNROM masking.
This commit is contained in:
NewRisingSun
136
src/boards/126-422-534.c
Normal file
136
src/boards/126-422-534.c
Normal file
@@ -0,0 +1,136 @@
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/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2020 NewRisingSun
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*
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||||
* 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
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*/
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/* Mapper 422: "Normal" version of the mapper. Represents UNIF boards BS-400R and BS-4040R.
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Mapper 126: Power Joy version of the mapper, connecting CHR A18 and A19 in reverse order.
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Mapper 534: Waixing version of the mapper, inverting the reload value of the MMC3 scanline counter.
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*/
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#include "mapinc.h"
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#include "mmc3.h"
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static uint8 reverseCHR_A18_A19;
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static uint8 invertC000;
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static uint8 dipSwitch;
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static void wrapPRG(uint32 A, uint8 V) {
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int prgAND = EXPREGS[0] &0x40? 0x0F: 0x1F; // 128 KiB or 256 KiB inner PRG bank selection
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int prgOR =(EXPREGS[0] <<4 &0x70 | EXPREGS[0] <<3 &0x180) &~prgAND; // outer PRG bank
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switch(EXPREGS[3] &3) {
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case 0: // MMC3 PRG mode
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break;
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case 1:
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case 2: // NROM-128 mode: MMC3 register 6 applies throughout $8000-$FFFF, MMC3 A13 replaced with CPU A13.
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V =DRegBuf[6] &~1 | A >>13 &1;
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setprg8(A ^0x4000, V &prgAND | prgOR); // wrapPRG is only called with A containing the switchable banks, so we need to manually switch the normally fixed banks in this mode as well.
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break;
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case 3: // NROM-256 mode: MMC3 register 6 applies throughout $8000-$FFFF, MMC3 A13-14 replaced with CPU A13-14.
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V =DRegBuf[6] &~3 | A >>13 &3;
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setprg8(A ^0x4000, (V ^2) &prgAND | prgOR); // wrapPRG is only called with A containing the switchable banks, so we need to manually switch the normally fixed banks in this mode as well.
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break;
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}
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setprg8(A, V &prgAND | prgOR);
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}
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static void wrapCHR(uint32 A, uint8 V) {
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int chrAND = EXPREGS[0] &0x80? 0x7F: 0xFF; // 128 KiB or 256 KiB innter CHR bank selection
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int chrOR; // outer CHR bank
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if (reverseCHR_A18_A19) // Mapper 126 swaps CHR A18 and A19
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chrOR =(EXPREGS[0] <<4 &0x080 | EXPREGS[0] <<3 &0x100 | EXPREGS[0] <<5 &0x200) &~chrAND;
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else
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chrOR =EXPREGS[0] <<4 &0x380 &~chrAND;
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if (EXPREGS[3] &0x10) // CNROM mode: 8 KiB inner CHR bank comes from outer bank register #2
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setchr8(EXPREGS[2] &(chrAND >>3) | chrOR >>3);
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else // MMC3 CHR mode
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setchr1(A, (V & chrAND) | chrOR);
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}
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static DECLFW(writeWRAM) {
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if (~EXPREGS[3] &0x80) {
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// Lock bit clear: Update any outer bank register
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EXPREGS[A &3] =V;
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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} else
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if ((A &3) ==2) {
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// Lock bit set: Only update the bottom one or two bits of the CNROM bank
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int latchMask =EXPREGS[2] &0x10? 1: 3; // 16 or 32 KiB inner CHR bank selection
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EXPREGS[2] &=~latchMask;
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EXPREGS[2] |= V &latchMask;
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FixMMC3CHR(MMC3_cmd);
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}
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CartBW(A, V);
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}
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static DECLFR(readDIP) {
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uint8 result =CartBR(A);
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if (EXPREGS[1] &1) result =result &~3 | dipSwitch &3; // Replace bottom two bits with solder pad or DIP switch setting if so selected
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return result;
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}
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static DECLFW(writeIRQ) {
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MMC3_IRQWrite(A, V ^0xFF);
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}
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static void reset(void) {
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dipSwitch++; // Soft-resetting cycles through solder pad or DIP switch settings
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EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
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MMC3RegReset();
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}
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static void power(void) {
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dipSwitch =0;
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EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
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GenMMC3Power();
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SetWriteHandler(0x6000, 0x7FFF, writeWRAM);
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SetReadHandler(0x8000, 0xFFFF, readDIP);
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if (invertC000) SetWriteHandler(0xC000, 0xDFFF, writeIRQ); // Mapper 534 inverts the MMC3 scanline counter reload value
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}
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static void init(CartInfo *info) {
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GenMMC3_Init(info, 512, 256, 8, info->battery);
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cwrap = wrapCHR;
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pwrap = wrapPRG;
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info->Power = power;
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info->Reset = reset;
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AddExState(EXPREGS, 4, 0, "EXPR");
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AddExState(&dipSwitch, 1, 0, "DPSW");
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}
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void Mapper126_Init(CartInfo *info) {
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reverseCHR_A18_A19 = 1;
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invertC000 = 0;
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init(info);
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}
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void Mapper422_Init(CartInfo *info) {
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reverseCHR_A18_A19 = 0;
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invertC000 = 0;
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init(info);
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}
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void Mapper534_Init(CartInfo *info) {
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reverseCHR_A18_A19 = 0;
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invertC000 = 1;
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init(info);
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}
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105
src/boards/126.c
105
src/boards/126.c
@@ -1,105 +0,0 @@
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/* FCEUmm - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2019 Libretro Team
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*
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* This program is free software; you can redistribute it and/or modify
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||||
* 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
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*/
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/* Mapper 126, PowerJoy 84-in-1 Multicart (PJ-008*/
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/* reference from nestopia since not available in nesdev */
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#include "mapinc.h"
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#include "mmc3.h"
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static uint16 GetExChrExBank() {
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uint16 bank = (uint16)EXPREGS[0];
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return ((~bank << 0 & 0x080 & ((uint16)EXPREGS[2])) | (bank << 4 & 0x080 & bank) |
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(bank << 3 & 0x100) | (bank << 5 & 0x200));
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}
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static void UpdateChrBank(void) {
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uint16 bank = (uint16)EXPREGS[2] & 0x0F;
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bank |= GetExChrExBank() >> 3;
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setchr8(bank);
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}
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static void M126CW(uint32 A, uint8 V) {
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if (!(EXPREGS[3] & 0x10)) {
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uint16 bank = (uint16)V & (((uint16)EXPREGS[0] & 0x80) - 1);
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bank |= GetExChrExBank();
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setchr1(A, bank);
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}
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}
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static void M126PW(uint32 A, uint8 V) {
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uint16 bank = (uint16)V;
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uint16 preg = (uint16)EXPREGS[0];
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bank &= ((~preg >> 2) & 0x10) | 0x0F;
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bank |= ((preg & (0x06 | (preg & 0x40) >> 6)) << 4) | ((preg & 0x10) << 3);
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if (!(EXPREGS[3] & 0x03))
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setprg8(A, bank);
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else if ((A - 0x8000) == ((MMC3_cmd << 8) & 0x4000)) { /* TODO: Clean this */
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if ((EXPREGS[3] & 0x3) == 0x3)
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setprg32(0x8000, (bank >> 2));
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else {
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setprg16(0x8000, (bank >> 1));
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setprg16(0xc000, (bank >> 1));
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}
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}
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}
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static DECLFW(M126Write) {
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A &= 0x03;
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if(A == 0x01 || A == 0x02 || ((A == 0x00 || A == 0x03) && !(EXPREGS[3] & 0x80))) {
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if (EXPREGS[A] != V) {
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EXPREGS[A] = V;
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if (EXPREGS[3] & 0x10)
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UpdateChrBank();
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else
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FixMMC3CHR(MMC3_cmd);
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FixMMC3PRG(MMC3_cmd);
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}
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}
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}
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void M126StateRestore(int v) {
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FixMMC3CHR(MMC3_cmd);
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FixMMC3PRG(MMC3_cmd);
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if (EXPREGS[3] & 0x10)
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UpdateChrBank();
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}
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static void M126Reset(void) {
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EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
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MMC3RegReset();
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}
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static void M126Power(void) {
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EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
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GenMMC3Power();
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SetWriteHandler(0x6000, 0x7FFF, M126Write);
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}
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void Mapper126_Init(CartInfo *info) {
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GenMMC3_Init(info, 2048, 1023, 0, 0);
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cwrap = M126CW;
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pwrap = M126PW;
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info->Power = M126Power;
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info->Reset = M126Reset;
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GameStateRestore = M126StateRestore;
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AddExState(EXPREGS, 4, 0, "EXPR");
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}
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@@ -1,89 +0,0 @@
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/* FCEUmm - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2020 negativeExponent
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*
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* 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
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*/
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/* NES 2.0 Mapper 534 - 2-in-1 数独/五子棋 (Sudoku/Gomoku, NJ064) */
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#include "mapinc.h"
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#include "mmc3.h"
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static uint32 GetPRGBank(uint32 bank)
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{
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if (~bank & 1 && (MMC3_cmd & 0x40)) bank ^= 2;
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return (bank & 2) ? (0xFE | (bank & 1)) : DRegBuf[6 | (bank & 1)];
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}
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void SyncPRG_GNROM(int A14, int AND, int OR) {
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setprg8(0x8000, ((GetPRGBank(0) & ~A14) & AND) | OR);
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setprg8(0xA000, ((GetPRGBank(1) & ~A14) & AND) | OR);
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setprg8(0xC000, ((GetPRGBank(0) | A14) & AND) | OR);
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setprg8(0xE000, ((GetPRGBank(1) | A14) & AND) | OR);
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}
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static void M534PW(uint32 A, uint8 V) {
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if (EXPREGS[0] & 0x40)
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SyncPRG_GNROM(EXPREGS[3] & 0x02, 0x0F, ((EXPREGS[0] & 3) << 4));
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else
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setprg8(A, (V & 0x1F) | ((EXPREGS[0] & 0x2) << 4));
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}
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static void M534CW(uint32 A, uint8 V) {
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setchr1(A, (V & 0xFF) | ((EXPREGS[2] & 0x0F) << 3) | ((EXPREGS[0] & 0x18) << 4));
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}
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static DECLFW(M534IRQWrite) {
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MMC3_IRQWrite(0xC000 | (A & 1), V ^ 0xFF);
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}
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static DECLFW(M534WriteLo) {
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if ((A & 0x800) && (!(EXPREGS[3] & 0x80) || (A & 3) == 2)) {
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EXPREGS[A & 3] = V;
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FixMMC3CHR(MMC3_cmd);
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FixMMC3PRG(MMC3_cmd);
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}
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}
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static void M534Power(void) {
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EXPREGS[0] = 0x00;
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EXPREGS[1] = 0x00;
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EXPREGS[2] = 0x00;
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EXPREGS[3] = 0x00;
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GenMMC3Power();
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SetWriteHandler(0x6000, 0x6FFF, M534WriteLo);
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SetWriteHandler(0xC000, 0xDFFF, M534IRQWrite);
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}
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static void M534Reset(void) {
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EXPREGS[0] = 0x00;
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EXPREGS[1] = 0x00;
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EXPREGS[2] = 0x00;
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EXPREGS[3] = 0x00;
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EXPREGS[4] = (EXPREGS[4] + 1) & 7;
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FCEU_printf("dipswitch = %d\n", EXPREGS[4]);
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MMC3RegReset();
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}
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void Mapper534_Init(CartInfo *info) {
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GenMMC3_Init(info, 512, 512, 0, 0);
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pwrap = M534PW;
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cwrap = M534CW;
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info->Power = M534Power;
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info->Reset = M534Reset;
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AddExState(EXPREGS, 5, 0, "EXPR");
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}
|
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@@ -1,156 +0,0 @@
|
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/* FCE Ultra - NES/Famicom Emulator
|
||||
*
|
||||
* Copyright notice for this file:
|
||||
* Copyright (C) 2020
|
||||
*
|
||||
* 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
|
||||
*/
|
||||
|
||||
/* originally submitted by dragon2snow
|
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* Known carts:
|
||||
* UNIF BMC-BS-400R : 700000-in-1 (BS-400R)(Unl), PRG 1024K CHR 1024K CRC 0x5DBDFAA0
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* UNIF BMC-BS-4040R : Double Dragon 310000-in-1 (4040R) PRG 512 CHR 512 CRC 0x3A642F31
|
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*
|
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* FIXME: Future Kids notes
|
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* Either something is wrong or missing because chr banks for the game is $E8 - EB
|
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* but game uses $EC-EF here. These are chr banks for the next game and does not masked properly
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* by mapper code.
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* ~ c@2020
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*/
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|
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#include "mapinc.h"
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#include "mmc3.h"
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|
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static uint8 pointer;
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static uint8 offset;
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static int getPRGBankBS4XXXR(int bank)
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{
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if (((~bank) & 1) && (pointer & 0x40)) bank ^= 2;
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return ((bank & 2) ? 0xFE | (bank & 1) : DRegBuf[6 | (bank & 1)]);
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}
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static void BS4XXXRPW(uint32 A, uint8 V)
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{
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if ((EXPREGS[3] >> 4) & 1) {
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uint8 prgAND = ((EXPREGS[0] >> 1) & 1) ? 0x0F : 0x0F;
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uint8 prgOR = (EXPREGS[0] & 7) << 4;
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uint8 bank0 = getPRGBankBS4XXXR(0);
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uint8 bank1 = getPRGBankBS4XXXR(1);
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/* 16K Mode */
|
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if (!((EXPREGS[3] >>1 )& 0x1)) {
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setprg8(0x8000, (bank0 & prgAND) | prgOR);
|
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setprg8(0xA000, (bank1 & prgAND) | prgOR);
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setprg8(0xC000, (bank0 & prgAND) | prgOR);
|
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setprg8(0xE000, (bank1 & prgAND) | prgOR);
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}
|
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/* 32K Mode */
|
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else {
|
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setprg8(0x8000, (bank0 & prgAND) | prgOR);
|
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setprg8(0xA000, (bank1 & prgAND) | prgOR);
|
||||
setprg8(0xC000, ((bank0 | 2) & prgAND) | prgOR);
|
||||
setprg8(0xE000, ((bank1 | 2) & prgAND) | prgOR);
|
||||
}
|
||||
}
|
||||
/* Mmc3 Mode */
|
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else {
|
||||
uint8 prgAND = ((EXPREGS[0] >> offset) & 1) ? 0x0F : 0x1F; /* 4040R 6,400R 1 */
|
||||
uint8 prgOR = (EXPREGS[0] & 7) << 4;
|
||||
setprg8(A, (V & prgAND) | prgOR);
|
||||
}
|
||||
}
|
||||
|
||||
static void BS4XXXRCW(uint32 A, uint8 V) {
|
||||
if ((EXPREGS[3] >> 4) & 1) {
|
||||
uint8 chrAND = ((EXPREGS[0] >> 1) & 1) ? 0x0F : 0x0F;
|
||||
uint8 chrOR = ((EXPREGS[0] >> 3) & 7) << 4;
|
||||
/* FIXME: Ugly hack for Future Kids */
|
||||
if (EXPREGS[4]) {
|
||||
chrAND = 0x03;
|
||||
chrOR |= 8;
|
||||
}
|
||||
setchr8((EXPREGS[2] & chrAND) | chrOR);
|
||||
} else {
|
||||
uint8 chrAND = ((EXPREGS[0] >> 1) & 1) ? 0xFF : 0xFF;
|
||||
uint16 chrOR = ((EXPREGS[0] >> 3) & 7) << 7;
|
||||
setchr1(A, (V & chrAND) | chrOR);
|
||||
}
|
||||
}
|
||||
|
||||
static DECLFW(BS4XXXRHiWrite) {
|
||||
/* FCEU_printf("Wr8B: A:%04x V:%02x\n", A, V); */
|
||||
if (A == 0x8000)
|
||||
pointer = MMC3_cmd ^ V;
|
||||
MMC3_CMDWrite(A, V);
|
||||
}
|
||||
|
||||
static DECLFW(BS4XXXRLoWrite) {
|
||||
/* FCEU_printf("WrLo: A:%04x V:%02x\n", A, V); */
|
||||
if (A & 0x800) {
|
||||
/* Future Kids hack */
|
||||
if (!EXPREGS[4]) {
|
||||
if ((((A & 3) == 2) && (V == 0xE8)))
|
||||
EXPREGS[4] = 1;
|
||||
}
|
||||
if (!(EXPREGS[3] & 0x80)) {
|
||||
EXPREGS[A & 0x03] = V;
|
||||
FixMMC3PRG(MMC3_cmd);
|
||||
FixMMC3CHR(MMC3_cmd);
|
||||
}
|
||||
else if (EXPREGS[3] & 0x10) {
|
||||
EXPREGS[A & 0x03] = V;
|
||||
FixMMC3PRG(MMC3_cmd);
|
||||
FixMMC3CHR(MMC3_cmd);
|
||||
}
|
||||
}
|
||||
CartBW(A, V);
|
||||
}
|
||||
|
||||
static void BS4XXXRReset(void) {
|
||||
EXPREGS[4] = 0;
|
||||
EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
|
||||
MMC3RegReset();
|
||||
}
|
||||
|
||||
static void BS4XXXRPower(void) {
|
||||
EXPREGS[4] = 0;
|
||||
EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
|
||||
GenMMC3Power();
|
||||
SetWriteHandler(0x6000, 0x7FFF, BS4XXXRLoWrite);
|
||||
SetWriteHandler(0x8000, 0xBFFF, BS4XXXRHiWrite);
|
||||
}
|
||||
|
||||
void BS4XXXR_Init(CartInfo *info) {
|
||||
GenMMC3_Init(info, 512, 256, 8, 0);
|
||||
cwrap = BS4XXXRCW;
|
||||
pwrap = BS4XXXRPW;
|
||||
|
||||
info->Power = BS4XXXRPower;
|
||||
info->Reset = BS4XXXRReset;
|
||||
|
||||
AddExState(EXPREGS, 4, 0, "EXPR");
|
||||
AddExState(&pointer, 1, 0, "PNTR");
|
||||
AddExState(&offset, 1, 0, "OFFS");
|
||||
}
|
||||
|
||||
void BS400R_Init(CartInfo *info) {
|
||||
offset = 1;
|
||||
BS4XXXR_Init(info);
|
||||
}
|
||||
|
||||
void BS4040R_Init(CartInfo *info) {
|
||||
offset = 6;
|
||||
BS4XXXR_Init(info);
|
||||
}
|
||||
@@ -699,6 +699,7 @@ INES_BOARD_BEGIN()
|
||||
INES_BOARD( "Realtec 8210", 395, Mapper395_Init )
|
||||
INES_BOARD( "BMC Super 19-in-1 (VIP19)", 401, Mapper401_Init )
|
||||
INES_BOARD( "A88S-1", 411, Mapper411_Init )
|
||||
INES_BOARD( "BS-400R/BS-4040", 422, Mapper422_Init )
|
||||
INES_BOARD( "Brilliant Com Cocoma Pack", 516, Mapper516_Init )
|
||||
INES_BOARD( "Sachen 3014", 533, Mapper533_Init )
|
||||
INES_BOARD( "NJ064", 534, Mapper534_Init )
|
||||
|
||||
@@ -271,6 +271,7 @@ void Mapper390_Init(CartInfo *);
|
||||
void Mapper395_Init(CartInfo *);
|
||||
void Mapper401_Init(CartInfo *);
|
||||
void Mapper411_Init(CartInfo *);
|
||||
void Mapper422_Init(CartInfo *);
|
||||
void Mapper516_Init(CartInfo *);
|
||||
void Mapper533_Init(CartInfo *);
|
||||
void Mapper534_Init(CartInfo *);
|
||||
|
||||
@@ -616,8 +616,8 @@ static BMAPPING bmap[] = {
|
||||
{ "82112C", 540, Mapper540_Init, 0 },
|
||||
{ "N49C-300", 369, Mapper369_Init, 0 },
|
||||
|
||||
{ "BS-400R", NO_INES, BS400R_Init, 0 },
|
||||
{ "BS-4040R", NO_INES, BS4040R_Init, 0 },
|
||||
{ "BS-400R", 422, Mapper422_Init, 0 },
|
||||
{ "BS-4040R", 422, Mapper422_Init, 0 },
|
||||
|
||||
#ifdef COPYFAMI
|
||||
{ "COPYFAMI_MMC3", NO_INES, MapperCopyFamiMMC3_Init, 0 },
|
||||
|
||||
@@ -196,8 +196,7 @@ void AbG1l_Init(CartInfo *info);
|
||||
void KG256_Init(CartInfo *info);
|
||||
void WAIXINGFS005_Init(CartInfo *info);
|
||||
|
||||
void BS4040R_Init(CartInfo *info);
|
||||
void BS400R_Init(CartInfo *info);
|
||||
void Mapper422_Init(CartInfo *info);
|
||||
|
||||
#ifdef COPYFAMI
|
||||
void MapperCopyFamiMMC3_Init(CartInfo *info);
|
||||
|
||||
Reference in New Issue
Block a user