55 lines
1.6 KiB
C
55 lines
1.6 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) 2025 NewRisingSun
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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 "vrc2and4.h"
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static void sync () {
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VRC24_syncPRG(0x01F, 0x000);
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VRC24_syncCHR(0x1FF, 0x000);
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VRC24_syncMirror();
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}
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int UNLAX5705_getPRGBank(int bank) {
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int result =VRC24_getPRGBank(bank);
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return result <<2 &0x8 | result >>2 &0x2 | result &~0xA;
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}
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int UNLAX5705_getCHRBank(int bank) {
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int result =VRC24_getCHRBank(bank);
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return result <<1 &0x40 | result >>1 &0x20 | result &~0x60;
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}
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DECLFW(UNLAX5705_unscrambleAddress) {
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VRC24_writeReg(A &~0x1000 | A <<9 &0x1000, V);
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}
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void UNLAX5705_power (void) {
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VRC24_power();
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SetWriteHandler(0x8000, 0xFFFF, UNLAX5705_unscrambleAddress);
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}
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void UNLAX5705_Init (CartInfo *info) {
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VRC24_init(info, sync, 0x01, 0x02, 1, 1, 0);
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info->Power =UNLAX5705_power;
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VRC24_GetPRGBank =UNLAX5705_getPRGBank;
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VRC24_GetCHRBank =UNLAX5705_getCHRBank;
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}
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