/* FCE Ultra - NES/Famicom Emulator * * Copyright notice for this file: * Copyright (C) 2006 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 */ #include "mapinc.h" #include "mmc3.h" static int is_BMCFK23CA; static uint8 unromchr; static uint32 dipswitch = 0; static uint8 *CHRRAM = NULL; static uint32 CHRRAMSize; static void BMCFK23CCW(uint32 A, uint8 V) { if (EXPREGS[0] & 0x40) setchr8(EXPREGS[2] | unromchr); else if (EXPREGS[0] & 0x20) { setchr1r(0x10, A, V); } else { uint16 base=(EXPREGS[2] & 0x7F) << 3; if (EXPREGS[3] & 2) { int cbase = (MMC3_cmd & 0x80) << 5; setchr1(A, V | base); setchr1(0x0000 ^ cbase, DRegBuf[0] | base); setchr1(0x0400 ^ cbase, EXPREGS[6] | base); setchr1(0x0800 ^ cbase, DRegBuf[1] | base); setchr1(0x0c00 ^ cbase, EXPREGS[7] | base); } else setchr1(A, V | base); } } //some games are wired differently, and this will need to be changed. //all the WXN games require prg_bonus = 1, and cah4e3's multicarts require prg_bonus = 0 //we'll populate this from a game database static int prg_mask; static int prg_bonus = 1; //prg_bonus = 0 //4-in-1 (FK23C8021)[p1][!].nes //4-in-1 (FK23C8033)[p1][!].nes //4-in-1 (FK23C8043)[p1][!].nes //4-in-1 (FK23Cxxxx, S-0210A PCB)[p1][!].nes //prg_bonus = 1 //[m176]大富翁2-上海大亨.wxn.nes //[m176]宠物翡翠.fix.nes //[m176]格兰帝亚.wxn.nes //[m176]梦幻之星.wxn.nes //[m176]水浒神兽.fix.nes //[m176]西楚霸王.fix.nes //[m176]超级大富翁.wxn.nes //[m176]雄霸天下.wxn.nes //works as-is under virtuanes m176 //[m176]三侠五义.wxn.nes //[m176]口袋金.fix.nes //[m176]爆笑三国.fix.nes //needs other tweaks //[m176]三国忠烈传.wxn.nes //[m176]破釜沉舟.fix.nes static uint64 CartList[] = { 0x1606b8c2aff8d942LL, // 4-in-1 (BS-8088) [p1][!].nes 0x62b51b108a01d2beLL, // 4-in-1 (FK23C8021) [p1][!].nes 0xa37eb9163e001a46LL, // 4-in-1 (FK23C8026) [p1][!].nes 0x8bb48490d8d22711LL, // 4-in-1 (FK23C8033) [p1][!].nes 0xc75888d7b48cd378LL, // 4-in-1 (FK23C8043) [p1][!].nes 0xde5ce25860233f7eLL, // 4-in-1 (FK23C8045) [p1][!].nes 0x8b6c9fc7769a5500LL, // 4-in-1 (FK23C8052) [p1][!].nes 0x5b3aa4cdc484a088LL, // 4-in-1 (FK23C8056) [p1][!].nes 0x497344d14c308a1aLL, // 4-in-1 (FK23C8078) (Ch) [p1].nes 0x9342bf9bae1c798aLL, // 4-in-1 (FK23C8079) [p1][!].nes 0xf81a376fa54fdd69LL, // 4-in-1 (FK23Cxxxx, S-0210A PCB)[p1][!].nes 0x8fd9c235957a6df0LL, // 5-in-1 (K5003) [p1][!]-1125) (Ch).nes 0x0315924d00dd7807LL, // Mortal Kombat 30 Peoples (DH1043) (Ch).nes 0x4b99c39fdb66128aLL, // 4-in-1 (FK23C8078) (Ch) [p1][U][!].unf 0x22a0ba5743191778LL, // Rockman 4 MI (Hack) 0 /* Abandon all hope if the game has 0 in the lower 64-bits of its MD5 hash */ }; int DetectPRGbonus(CartInfo *tmp) { int x, i = 0; uint64 partialmd5 = 0; for (x = 0; x < 8; x++) partialmd5 |= (uint64)tmp->MD5[15 - x] << (x * 8); while (CartList[i] != 0) { if (CartList[i] == partialmd5) { return (0); } i++; } return (1); } static void BMCFK23CPW(uint32 A, uint8 V) { /* Modified (c)May 2017 - Backport older implementations from FCEUmm * to support big sized FK23CA carts which broke in latest commits. */ uint32 bank = (EXPREGS[1] & 0x1F); uint32 hiblock = ((EXPREGS[0] & 8) << 4) | ((EXPREGS[0] & 0x80) << 1) | (UNIFchrrama ? ((EXPREGS[2] & 0x40) << 3) : 0); uint32 block = (EXPREGS[1] & 0x60) | hiblock; uint32 extra = (EXPREGS[3] & 2); switch (EXPREGS[0] & 7) { case 4: setprg32(0x8000,(EXPREGS[1] | block) >> 1); break; case 3: setprg16(0x8000,(EXPREGS[1] | block)); setprg16(0xC000,(EXPREGS[1] | block)); break; default: if (EXPREGS[0] & 3) { uint32 blocksize = (6) - (EXPREGS[0] & 3); uint32 mask = (1 << blocksize) - 1; V &= mask; //V &= 63; //? is this a good idea? V |= EXPREGS[1] << 1; setprg8(A, (V | (hiblock << 1))); } else setprg8(A, ((V & prg_mask) | (block << 1))); if (extra) { setprg8(0xC000, EXPREGS[4]); setprg8(0xE000, EXPREGS[5]); } break; } setprg8r(0x10, 0x6000, A001B & 3); } static DECLFW(BMCFK23CHiWrite) { if (EXPREGS[0] & 0x40) { if (EXPREGS[0] & 0x30) unromchr = 0; else { unromchr = V & 3; FixMMC3CHR(MMC3_cmd); } } else { if ((A == 0x8001) && (EXPREGS[3] & 2 && MMC3_cmd & 8)) { EXPREGS[4 | (MMC3_cmd & 3)] = V; FixMMC3PRG(MMC3_cmd); FixMMC3CHR(MMC3_cmd); } else if (A < 0xC000) { if (UNIFchrrama) { // hacky... strange behaviour, must be bit scramble due to pcb layot restrictions // check if it not interfer with other dumps if ((A == 0x8000) && (V == 0x46)) V = 0x47; else if ((A==0x8000) && (V == 0x47)) V = 0x46; } MMC3_CMDWrite(A, V); FixMMC3PRG(MMC3_cmd); } else MMC3_IRQWrite(A, V); } } static DECLFW(BMCFK23CWrite) { if (A & (1 << (dipswitch + 4))) { int remap = 0; EXPREGS[A & 3] = V; //sometimes writing to reg0 causes remappings to occur. we think the 2 signifies this. //if not, 0x24 is a value that is known to work //however, the low 4 bits are known to control the mapping mode, so 0x20 is more likely to be the immediate remap flag remap |= ((EXPREGS[0] & 0xF0) == 0x20); //this is an actual mapping reg. i think reg0 controls what happens when reg1 is written. anyway, we have to immediately remap these remap |= (A & 3) == 1; //this too. remap |= (A & 3) == 2; if (remap) { FixMMC3PRG(MMC3_cmd); FixMMC3CHR(MMC3_cmd); } } if (is_BMCFK23CA) if(EXPREGS[3] & 2) EXPREGS[0] &= ~7; // hacky hacky! if someone wants extra banking, then for sure doesn't want mode 4 for it! (allow to run A version boards on normal mapper) } static void BMCFK23CReset(void) { //NOT NECESSARY ANYMORE //this little hack makes sure that we try all the dip switch settings eventually, if we reset enough // dipswitch++; // dipswitch&=7; //printf("BMCFK23C dipswitch set to %d\n",dipswitch); EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0; EXPREGS[4] = EXPREGS[5] = EXPREGS[6] = EXPREGS[7] = 0xFF; MMC3RegReset(); FixMMC3PRG(MMC3_cmd); FixMMC3CHR(MMC3_cmd); } static void BMCFK23CPower(void) { GenMMC3Power(); dipswitch = 0; EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0; EXPREGS[4] = EXPREGS[5] = EXPREGS[6] = EXPREGS[7] = 0xFF; SetWriteHandler(0x5000, 0x5fff, BMCFK23CWrite); SetWriteHandler(0x8000, 0xFFFF, BMCFK23CHiWrite); FixMMC3PRG(MMC3_cmd); FixMMC3CHR(MMC3_cmd); } static void BMCFK23CAPower(void) { GenMMC3Power(); dipswitch = 0; EXPREGS[0] = EXPREGS[1] = EXPREGS[2] = EXPREGS[3] = 0; EXPREGS[4] = EXPREGS[5] = EXPREGS[6] = EXPREGS[7] = 0xFF; SetWriteHandler(0x5000, 0x5fff, BMCFK23CWrite); SetWriteHandler(0x8000, 0xFFFF, BMCFK23CHiWrite); FixMMC3PRG(MMC3_cmd); FixMMC3CHR(MMC3_cmd); } static void BMCFK23CAClose(void) { if (CHRRAM) FCEU_gfree(CHRRAM); CHRRAM=NULL; } void BMCFK23C_Init(CartInfo *info) { is_BMCFK23CA = 0; GenMMC3_Init(info, 512, 256, 8, 0); cwrap = BMCFK23CCW; pwrap = BMCFK23CPW; info->Power = BMCFK23CPower; info->Reset = BMCFK23CReset; AddExState(EXPREGS, 8, 0, "EXPR"); AddExState(&unromchr, 1, 0, "UCHR"); AddExState(&dipswitch, 1, 0, "DPSW"); prg_bonus = DetectPRGbonus(info); prg_mask = (0x7F >> prg_bonus); } void BMCFK23CA_Init(CartInfo *info) { is_BMCFK23CA = 1; GenMMC3_Init(info, 512, 256, 8, 0); cwrap=BMCFK23CCW; pwrap=BMCFK23CPW; info->Power=BMCFK23CAPower; info->Reset=BMCFK23CReset; info->Close=BMCFK23CAClose; CHRRAMSize=8192; CHRRAM=(uint8*)FCEU_gmalloc(CHRRAMSize); SetupCartCHRMapping(0x10, CHRRAM, CHRRAMSize, 1); AddExState(CHRRAM, CHRRAMSize, 0, "CRAM"); AddExState(EXPREGS, 8, 0, "EXPR"); AddExState(&unromchr, 1, 0, "UCHR"); AddExState(&dipswitch, 1, 0, "DPSW"); prg_bonus = DetectPRGbonus(info); prg_mask = (0x7F >> prg_bonus); }