300 lines
8.4 KiB
C
300 lines
8.4 KiB
C
/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2006 CaH4e3
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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
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "mapinc.h"
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#include "mmc3.h"
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static int is_BMCFK23CA;
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static uint8 unromchr;
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static uint32 dipswitch = 0;
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static uint8 *CHRRAM = NULL;
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static uint32 CHRRAMSize;
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static void BMCFK23CCW(uint32 A, uint8 V) {
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if (EXPREGS[0] & 0x40)
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setchr8(EXPREGS[2] | unromchr);
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else if (EXPREGS[0] & 0x20) {
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setchr1r(0x10, A, V);
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} else {
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uint16 base=(EXPREGS[2] & 0x7F) << 3;
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if (EXPREGS[3] & 2) {
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int cbase = (MMC3_cmd & 0x80) << 5;
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setchr1(A, V | base);
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setchr1(0x0000 ^ cbase, DRegBuf[0] | base);
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setchr1(0x0400 ^ cbase, EXPREGS[6] | base);
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setchr1(0x0800 ^ cbase, DRegBuf[1] | base);
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setchr1(0x0c00 ^ cbase, EXPREGS[7] | base);
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} else
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setchr1(A, V | base);
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}
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}
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/* some games are wired differently, and this will need to be changed.
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* all the WXN games require prg_bonus = 1, and cah4e3's multicarts require prg_bonus = 0
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* we'll populate this from a game database
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*/
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static int prg_mask;
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static int prg_bonus = 1;
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/*
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* prg_bonus = 0
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* 4-in-1 (FK23C8021)[p1][!].nes
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* 4-in-1 (FK23C8033)[p1][!].nes
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* 4-in-1 (FK23C8043)[p1][!].nes
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* 4-in-1 (FK23Cxxxx, S-0210A PCB)[p1][!].nes
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* prg_bonus = 1
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* [m176]大富翁2-上海大亨.wxn.nes
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* [m176]宠物翡翠.fix.nes
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* [m176]格兰帝亚.wxn.nes
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* [m176]梦幻之星.wxn.nes
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* [m176]水浒神兽.fix.nes
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* [m176]西楚霸王.fix.nes
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* [m176]超级大富翁.wxn.nes
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* [m176]雄霸天下.wxn.nes
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* works as-is under virtuanes m176
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* [m176]三侠五义.wxn.nes
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* [m176]口袋金.fix.nes
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* [m176]爆笑三国.fix.nes
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* needs other tweaks
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* [m176]三国忠烈传.wxn.nes
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* [m176]破釜沉舟.fix.nes
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*/
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static uint64 CartList[] =
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{
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0x1606b8c2aff8d942LL, /* 4-in-1 (BS-8088) [p1][!].nes */
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0x62b51b108a01d2beLL, /* 4-in-1 (FK23C8021) [p1][!].nes */
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0xa37eb9163e001a46LL, /* 4-in-1 (FK23C8026) [p1][!].nes */
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0x8bb48490d8d22711LL, /* 4-in-1 (FK23C8033) [p1][!].nes */
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0xc75888d7b48cd378LL, /* 4-in-1 (FK23C8043) [p1][!].nes */
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0xde5ce25860233f7eLL, /* 4-in-1 (FK23C8045) [p1][!].nes */
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0x8b6c9fc7769a5500LL, /* 4-in-1 (FK23C8052) [p1][!].nes */
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0x5b3aa4cdc484a088LL, /* 4-in-1 (FK23C8056) [p1][!].nes */
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0x497344d14c308a1aLL, /* 4-in-1 (FK23C8078) (Ch) [p1].nes */
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0x9342bf9bae1c798aLL, /* 4-in-1 (FK23C8079) [p1][!].nes */
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0xf81a376fa54fdd69LL, /* 4-in-1 (FK23Cxxxx, S-0210A PCB)[p1][!].nes */
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0x8fd9c235957a6df0LL, /* 5-in-1 (K5003) [p1][!]-1125) (Ch).nes */
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0x0315924d00dd7807LL, /* Mortal Kombat 30 Peoples (DH1043) (Ch).nes */
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0x4b99c39fdb66128aLL, /* 4-in-1 (FK23C8078) (Ch) [p1][U][!].unf */
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0x22a0ba5743191778LL, /* Rockman 4 MI (Hack) */
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0
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};
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static int DetectPRGbonus(CartInfo *tmp) {
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int x, i = 0;
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uint64 partialmd5 = 0;
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for (x = 0; x < 8; x++)
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partialmd5 |= (uint64)tmp->MD5[15 - x] << (x * 8);
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while (CartList[i] != 0) {
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if (CartList[i] == partialmd5) {
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return (0);
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}
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i++;
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}
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return (1);
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}
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static void BMCFK23CPW(uint32 A, uint8 V) {
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/* Modified (c)May 2017 - Backport older implementations from FCEUmm
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* to support big sized FK23CA carts which broke in latest commits.
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*/
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/* uint32 bank = (EXPREGS[1] & 0x1F); */
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uint32 hiblock = ((EXPREGS[0] & 8) << 4) | ((EXPREGS[0] & 0x80) << 1) | (UNIFchrrama ? ((EXPREGS[2] & 0x40) << 3) : 0);
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uint32 block = (EXPREGS[1] & 0x60) | hiblock;
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uint32 extra = (EXPREGS[3] & 2);
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switch (EXPREGS[0] & 7) {
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case 4:
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setprg32(0x8000,(EXPREGS[1] | block) >> 1);
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break;
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case 3:
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setprg16(0x8000,(EXPREGS[1] | block));
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setprg16(0xC000,(EXPREGS[1] | block));
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break;
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default:
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if (EXPREGS[0] & 3) {
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uint32 blocksize = (6) - (EXPREGS[0] & 3);
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uint32 mask = (1 << blocksize) - 1;
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V &= mask;
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/* V &= 63; */ /* ??? is this a good idea? */
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V |= EXPREGS[1] << 1;
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setprg8(A, (V | (hiblock << 1)));
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} else
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setprg8(A, ((V & prg_mask) | (block << 1)));
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if (extra) {
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setprg8(0xC000, EXPREGS[4]);
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setprg8(0xE000, EXPREGS[5]);
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}
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break;
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}
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setprg8r(0x10, 0x6000, A001B & 3);
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}
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static DECLFW(BMCFK23CHiWrite) {
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if (EXPREGS[0] & 0x40) {
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if (EXPREGS[0] & 0x30)
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unromchr = 0;
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else {
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unromchr = V & 3;
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FixMMC3CHR(MMC3_cmd);
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}
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} else {
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if ((A == 0x8001) && (EXPREGS[3] & 2 && MMC3_cmd & 8)) {
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EXPREGS[4 | (MMC3_cmd & 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 < 0xC000) {
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if (UNIFchrrama) { /* hacky... strange behaviour, must be bit scramble due to pcb layot restrictions
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* check if it not interfer with other dumps
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*/
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if ((A == 0x8000) && (V == 0x46))
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V = 0x47;
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else if ((A==0x8000) && (V == 0x47))
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V = 0x46;
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}
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MMC3_CMDWrite(A, V);
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FixMMC3PRG(MMC3_cmd);
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} else
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MMC3_IRQWrite(A, V);
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}
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}
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static DECLFW(BMCFK23CWrite) {
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if (A & (1 << (dipswitch + 4))) {
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int remap = 0;
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EXPREGS[A & 3] = V;
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/* sometimes writing to reg0 causes remappings to occur. we think the 2 signifies this.
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* if not, 0x24 is a value that is known to work
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* however, the low 4 bits are known to control the mapping mode,
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* so 0x20 is more likely to be the immediate remap flag
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*/
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remap |= ((EXPREGS[0] & 0xF0) == 0x20);
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/* this is an actual mapping reg. i think reg0 controls what happens
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* when reg1 is written. anyway, we have to immediately remap these
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*/
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remap |= (A & 3) == 1;
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/* this too. */
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remap |= (A & 3) == 2;
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if (remap) {
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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}
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}
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if (is_BMCFK23CA)
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if(EXPREGS[3] & 2)
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EXPREGS[0] &= ~7; /* hacky hacky! if someone wants extra banking,
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* then for sure doesn't want mode 4 for it!
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* (allow to run A version boards on normal mapper)
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*/
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}
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static void BMCFK23CReset(void) {
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/* !NOT NECESSARY ANYMORE!
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*
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* this little hack makes sure that we try all the dip switch settings eventually, if we reset enough
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* dipswitch++;
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* dipswitch&=7;
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* printf("BMCFK23C dipswitch set to %d\n",dipswitch);
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*/
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EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
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EXPREGS[4] = EXPREGS[5] = EXPREGS[6] = EXPREGS[7] = 0xFF;
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MMC3RegReset();
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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}
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static void BMCFK23CPower(void) {
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GenMMC3Power();
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dipswitch = 0;
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EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
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EXPREGS[4] = EXPREGS[5] = EXPREGS[6] = EXPREGS[7] = 0xFF;
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SetWriteHandler(0x5000, 0x5fff, BMCFK23CWrite);
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SetWriteHandler(0x8000, 0xFFFF, BMCFK23CHiWrite);
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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}
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static void BMCFK23CAPower(void) {
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GenMMC3Power();
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dipswitch = 0;
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EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0;
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EXPREGS[4] = EXPREGS[5] = EXPREGS[6] = EXPREGS[7] = 0xFF;
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SetWriteHandler(0x5000, 0x5fff, BMCFK23CWrite);
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SetWriteHandler(0x8000, 0xFFFF, BMCFK23CHiWrite);
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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}
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static void BMCFK23CAClose(void) {
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if (CHRRAM)
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FCEU_gfree(CHRRAM);
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CHRRAM=NULL;
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}
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void BMCFK23C_Init(CartInfo *info) {
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is_BMCFK23CA = 0;
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GenMMC3_Init(info, 512, 256, 8, 0);
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cwrap = BMCFK23CCW;
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pwrap = BMCFK23CPW;
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info->Power = BMCFK23CPower;
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info->Reset = BMCFK23CReset;
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AddExState(EXPREGS, 8, 0, "EXPR");
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AddExState(&unromchr, 1, 0, "UCHR");
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AddExState(&dipswitch, 1, 0, "DPSW");
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prg_bonus = DetectPRGbonus(info);
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prg_mask = (0x7F >> prg_bonus);
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}
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void BMCFK23CA_Init(CartInfo *info) {
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is_BMCFK23CA = 1;
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GenMMC3_Init(info, 512, 256, 8, 0);
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cwrap=BMCFK23CCW;
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pwrap=BMCFK23CPW;
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info->Power=BMCFK23CAPower;
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info->Reset=BMCFK23CReset;
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info->Close=BMCFK23CAClose;
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CHRRAMSize=8192;
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CHRRAM=(uint8*)FCEU_gmalloc(CHRRAMSize);
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SetupCartCHRMapping(0x10, CHRRAM, CHRRAMSize, 1);
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AddExState(CHRRAM, CHRRAMSize, 0, "CRAM");
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AddExState(EXPREGS, 8, 0, "EXPR");
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AddExState(&unromchr, 1, 0, "UCHR");
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AddExState(&dipswitch, 1, 0, "DPSW");
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prg_bonus = DetectPRGbonus(info);
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prg_mask = (0x7F >> prg_bonus);
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}
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