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/* FCEUmm - NES/Famicom Emulator | ||
* | ||
* Copyright notice for this file: | ||
* Copyright (C) 2006 CaH4e3 | ||
* Copyright (C) 2023-2024 negativeExponent | ||
* | ||
* 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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/* NES 2.0 Mapper 265 - BMC-T-262 */ | ||
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#include "mapinc.h" | ||
#include "latch.h" | ||
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static void Sync(void) { | ||
uint8 bank = ((latch.addr >> 3) & 0x60) | ((latch.addr >> 2) & 0x18) | (latch.data & 0x07); | ||
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if (latch.addr & 0x80) { | ||
if (!bank) { | ||
/* NOTE: Unofficial support but Tetris II in 11-in-1 variant | ||
works as if its NROM-256 */ | ||
setprg32(0x8000, bank >> 1); | ||
} else { | ||
setprg16(0x8000, bank); | ||
setprg16(0xC000, bank); | ||
} | ||
} else { | ||
setprg16(0x8000, bank); | ||
setprg16(0xC000, bank | 0x07); | ||
} | ||
setchr8(0); | ||
setmirror(((latch.addr >> 1) & 0x01) ^ 0x01); | ||
} | ||
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static DECLFW(M265Write) { | ||
if (!(latch.addr & 0x2000)) { | ||
latch.addr = A; | ||
} | ||
latch.data = V; | ||
Sync(); | ||
} | ||
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static void M265Power(void) { | ||
LatchPower(); | ||
SetReadHandler(0x8000, 0xFFFF, CartBR); | ||
SetWriteHandler(0x8000, 0xFFFF, M265Write); | ||
} | ||
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void Mapper265_Init(CartInfo *info) { | ||
Latch_Init(info, Sync, NULL, 0, 0); | ||
info->Power = M265Power; | ||
info->Reset = LatchHardReset; | ||
} |
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