diff --git a/src/boards/252.c b/src/boards/252.c deleted file mode 100644 index fd6fca4..0000000 --- a/src/boards/252.c +++ /dev/null @@ -1,135 +0,0 @@ -/* FCE Ultra - NES/Famicom Emulator - * - * Copyright notice for this file: - * Copyright (C) 2009 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" - -static uint8 creg[8], preg[2]; -static int32 IRQa, IRQCount, IRQClock, IRQLatch; -static uint8 *WRAM = NULL; -static uint32 WRAMSIZE; -static uint8 *CHRRAM = NULL; -static uint32 CHRRAMSIZE; - -static SFORMAT StateRegs[] = -{ - { creg, 8, "CREG" }, - { preg, 2, "PREG" }, - { &IRQa, 4, "IRQA" }, - { &IRQCount, 4, "IRQC" }, - { &IRQLatch, 4, "IRQL" }, - { &IRQClock, 4, "IRQK" }, - { 0 } -}; - -static void Sync(void) { - uint8 i; - setprg8r(0x10, 0x6000, 0); - setprg8(0x8000, preg[0]); - setprg8(0xa000, preg[1]); - setprg8(0xc000, ~1); - setprg8(0xe000, ~0); - for (i = 0; i < 8; i++) - if ((creg[i] == 6) || (creg[i] == 7)) - setchr1r(0x10, i << 10, creg[i] & 1); - else - setchr1(i << 10, creg[i]); -} - -static DECLFW(M252Write) { - if ((A >= 0xB000) && (A <= 0xEFFF)) { - uint8 ind = ((((A & 8) | (A >> 8)) >> 3) + 2) & 7; - uint8 sar = A & 4; - creg[ind] = (creg[ind] & (0xF0 >> sar)) | ((V & 0x0F) << sar); - Sync(); - } else - switch (A & 0xF00C) { - case 0x8000: - case 0x8004: - case 0x8008: - case 0x800C: preg[0] = V; Sync(); break; - case 0xA000: - case 0xA004: - case 0xA008: - case 0xA00C: preg[1] = V; Sync(); break; - case 0xF000: X6502_IRQEnd(FCEU_IQEXT); IRQLatch &= 0xF0; IRQLatch |= V & 0xF; break; - case 0xF004: X6502_IRQEnd(FCEU_IQEXT); IRQLatch &= 0x0F; IRQLatch |= V << 4; break; - case 0xF008: X6502_IRQEnd(FCEU_IQEXT); IRQClock = 0; IRQCount = IRQLatch; IRQa = V & 2; break; - } -} - -static void M252Power(void) { - Sync(); - SetReadHandler(0x6000, 0x7FFF, CartBR); - SetWriteHandler(0x6000, 0x7FFF, CartBW); - SetReadHandler(0x8000, 0xFFFF, CartBR); - SetWriteHandler(0x8000, 0xFFFF, M252Write); - FCEU_CheatAddRAM(WRAMSIZE >> 10, 0x6000, WRAM); -} - -static void M252IRQ(int a) { - #define LCYCS 341 - if (IRQa) { - IRQClock += a * 3; - if (IRQClock >= LCYCS) { - while (IRQClock >= LCYCS) { - IRQClock -= LCYCS; - IRQCount++; - if (IRQCount & 0x100) { - X6502_IRQBegin(FCEU_IQEXT); - IRQCount = IRQLatch; - } - } - } - } -} - -static void M252Close(void) { - if (WRAM) - FCEU_gfree(WRAM); - if (CHRRAM) - FCEU_gfree(CHRRAM); - WRAM = CHRRAM = NULL; -} - -static void StateRestore(int version) { - Sync(); -} - -void Mapper252_Init(CartInfo *info) { - info->Power = M252Power; - info->Close = M252Close; - MapIRQHook = M252IRQ; - - CHRRAMSIZE = 2048; - CHRRAM = (uint8*)FCEU_gmalloc(CHRRAMSIZE); - SetupCartCHRMapping(0x10, CHRRAM, CHRRAMSIZE, 1); - AddExState(CHRRAM, CHRRAMSIZE, 0, "CRAM"); - - WRAMSIZE = 8192; - WRAM = (uint8*)FCEU_gmalloc(WRAMSIZE); - SetupCartPRGMapping(0x10, WRAM, WRAMSIZE, 1); - AddExState(WRAM, WRAMSIZE, 0, "WRAM"); - if (info->battery) { - info->SaveGame[0] = WRAM; - info->SaveGameLen[0] = WRAMSIZE; - } - GameStateRestore = StateRestore; - AddExState(&StateRegs, ~0, 0, 0); -} diff --git a/src/boards/252_253.c b/src/boards/252_253.c new file mode 100644 index 0000000..de2c24f --- /dev/null +++ b/src/boards/252_253.c @@ -0,0 +1,103 @@ +/* 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 uint8 *CHRRAM; +static uint32 CHRRAMSize; +static uint8 mask; +static uint8 compare; + +extern uint32 RefreshAddr; +writefunc writePPU; + +static SFORMAT stateRegs[] ={ + { &mask, 1, "CHRM" }, + { &compare, 1, "CHRC" }, + { 0 } +}; + +static void sync () { + int bank; + VRC24_syncWRAM(0); + VRC24_syncPRG(0x01F, 0x000); + for (bank =0; bank <8; bank++) setchr1r((VRC24_chr[bank] &mask) ==compare? 0x10: 0x00, bank <<10, VRC24_chr[bank]); + VRC24_syncMirror(); +} + +static DECLFW(Mapper252_253_interceptPPUWrite) { + if (~RefreshAddr &0x2000) { + int bank =VRC24_chr[RefreshAddr >>10 &7]; + switch(bank) { + case 0x88: mask =0xFC; compare =0x4C; VRC24_Sync(); break; + case 0xC2: mask =0xFE; compare =0x7C; VRC24_Sync(); break; + case 0xC8: mask =0xFE; compare =0x04; VRC24_Sync(); break; + } + } + writePPU(A, V); +} + +void Mapper252_power (void) { + mask =0xFE; + compare =0x06; + VRC24_power(); + writePPU =GetWriteHandler(0x2007); + SetWriteHandler(0x2007, 0x2007, Mapper252_253_interceptPPUWrite); +} + +void Mapper253_power (void) { + mask =0xFE; /* There are two board revisions, the earlier one with a non-switchable mask/compare FE/04 and a later switchable one that starts with FC/28 */ + compare =0x04; + VRC24_power(); + writePPU =GetWriteHandler(0x2007); + SetWriteHandler(0x2007, 0x2007, Mapper252_253_interceptPPUWrite); +} + +void Mapper252_253_close(void) { + if (CHRRAM) { + FCEU_gfree(CHRRAM); + CHRRAM =NULL; + } +} + +void Mapper252_Init (CartInfo *info) { + VRC24_init(info, sync, 0x4, 0x8, 1, 1, 0); + info->Power =Mapper252_power; + info->Close =Mapper252_253_close; + AddExState(stateRegs, ~0, 0, 0); + + CHRRAMSize =info->iNES2? (info->CHRRamSize +info->CHRRamSaveSize): 2048; + CHRRAM =(uint8*)FCEU_gmalloc(CHRRAMSize); + AddExState(CHRRAM, CHRRAMSize, 0, "CRAM"); + SetupCartCHRMapping(0x10, CHRRAM, CHRRAMSize, 1); +} + +void Mapper253_Init (CartInfo *info) { + VRC24_init(info, sync, 0x4, 0x8, 1, 1, 0); + info->Power =Mapper253_power; + info->Close =Mapper252_253_close; + AddExState(stateRegs, ~0, 0, 0); + + CHRRAMSize =info->iNES2? (info->CHRRamSize +info->CHRRamSaveSize): 2048; + CHRRAM =(uint8*)FCEU_gmalloc(CHRRAMSize); + AddExState(CHRRAM, CHRRAMSize, 0, "CRAM"); + SetupCartCHRMapping(0x10, CHRRAM, CHRRAMSize, 1); +} diff --git a/src/boards/253.c b/src/boards/253.c deleted file mode 100644 index 476a187..0000000 --- a/src/boards/253.c +++ /dev/null @@ -1,152 +0,0 @@ -/* FCE Ultra - NES/Famicom Emulator - * - * Copyright notice for this file: - * Copyright (C) 2009 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" - -static uint8 chrlo[8], chrhi[8], prg[2], mirr, vlock; -static int32 IRQa, IRQCount, IRQLatch, IRQClock; -static uint8 *WRAM = NULL; -static uint32 WRAMSIZE; -static uint8 *CHRRAM = NULL; -static uint32 CHRRAMSIZE; - -static SFORMAT StateRegs[] = -{ - { chrlo, 8, "CHRL" }, - { chrhi, 8, "CHRH" }, - { prg, 2, "PRGR" }, - { &mirr, 1, "MIRR" }, - { &vlock, 1, "VLCK" }, - { &IRQa, 4, "IRQA" }, - { &IRQCount, 4, "IRQC" }, - { &IRQLatch, 4, "IRQL" }, - { &IRQClock, 4, "IRQK" }, - { 0 } -}; - -static void Sync(void) { - uint8 i; - setprg8r(0x10, 0x6000, 0); - setprg8(0x8000, prg[0]); - setprg8(0xa000, prg[1]); - setprg8(0xc000, ~1); - setprg8(0xe000, ~0); - for (i = 0; i < 8; i++) { - uint32 chr = chrlo[i] | (chrhi[i] << 8); - if (((chrlo[i] == 4) || (chrlo[i] == 5)) && !vlock) - setchr1r(0x10, i << 10, chr & 1); - else - setchr1(i << 10, chr); - } - switch (mirr) { - case 0: setmirror(MI_V); break; - case 1: setmirror(MI_H); break; - case 2: setmirror(MI_0); break; - case 3: setmirror(MI_1); break; - } -} - -static DECLFW(M253Write) { - if ((A >= 0xB000) && (A <= 0xE00C)) { - uint8 ind = ((((A & 8) | (A >> 8)) >> 3) + 2) & 7; - uint8 sar = A & 4; - uint8 clo = (chrlo[ind] & (0xF0 >> sar)) | ((V & 0x0F) << sar); - chrlo[ind] = clo; - if (ind == 0) { - if (clo == 0xc8) - vlock = 0; - else if (clo == 0x88) - vlock = 1; - } - if (sar) - chrhi[ind] = V >> 4; - Sync(); - } else - switch (A) { - case 0x8010: prg[0] = V; Sync(); break; - case 0xA010: prg[1] = V; Sync(); break; - case 0x9400: mirr = V & 3; Sync(); break; - case 0xF000: X6502_IRQEnd(FCEU_IQEXT); IRQLatch &= 0xF0; IRQLatch |= V & 0xF; break; - case 0xF004: X6502_IRQEnd(FCEU_IQEXT); IRQLatch &= 0x0F; IRQLatch |= V << 4; break; - case 0xF008: X6502_IRQEnd(FCEU_IQEXT); IRQClock = 0; IRQCount = IRQLatch; IRQa = V & 2; break; - } -} - -static void M253Power(void) { - vlock = 0; - Sync(); - SetReadHandler(0x6000, 0x7FFF, CartBR); - SetWriteHandler(0x6000, 0x7FFF, CartBW); - SetReadHandler(0x8000, 0xFFFF, CartBR); - SetWriteHandler(0x8000, 0xFFFF, M253Write); - FCEU_CheatAddRAM(WRAMSIZE >> 10, 0x6000, WRAM); -} - -static void M253Close(void) { - if (WRAM) - FCEU_gfree(WRAM); - if (CHRRAM) - FCEU_gfree(CHRRAM); - WRAM = CHRRAM = NULL; -} - -static void M253IRQ(int a) { - #define LCYCS 341 - if (IRQa) { - IRQClock += a * 3; - if (IRQClock >= LCYCS) { - while (IRQClock >= LCYCS) { - IRQClock -= LCYCS; - IRQCount++; - if (IRQCount & 0x100) { - X6502_IRQBegin(FCEU_IQEXT); - IRQCount = IRQLatch; - } - } - } - } -} - -static void StateRestore(int version) { - Sync(); -} - -void Mapper253_Init(CartInfo *info) { - info->Power = M253Power; - info->Close = M253Close; - MapIRQHook = M253IRQ; - GameStateRestore = StateRestore; - - CHRRAMSIZE = 2048; - CHRRAM = (uint8*)FCEU_gmalloc(CHRRAMSIZE); - SetupCartCHRMapping(0x10, CHRRAM, CHRRAMSIZE, 1); - AddExState(CHRRAM, CHRRAMSIZE, 0, "CRAM"); - - WRAMSIZE = 8192; - WRAM = (uint8*)FCEU_gmalloc(WRAMSIZE); - SetupCartPRGMapping(0x10, WRAM, WRAMSIZE, 1); - AddExState(WRAM, WRAMSIZE, 0, "WRAM"); - if (info->battery) { - info->SaveGame[0] = WRAM; - info->SaveGameLen[0] = WRAMSIZE; - } - - AddExState(&StateRegs, ~0, 0, 0); -}