157 lines
4.0 KiB
C
157 lines
4.0 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) 2007 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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* FDS Conversion - Yume Koujou: Doki Doki Panic
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*
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* Logical bank layot 32 K BANK 0, 64K BANK 1, 32K ~0 hardwired, 8K is missing
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* need redump from MASKROM!
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* probably need refix mapper after hard dump
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*
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*/
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/* 2020-3-6 - update mirroring (negativeExponent)
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* PRG-ROM Bank Select #1/Mirroring Select ($8000-$8FFF, write)
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* A~FEDC BA98 7654 3210
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* -------------------
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* 1000 .... .... MBBB
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* |+++- Select 4 KiB PRG-ROM bank at CPU $7000-$7FFF
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* +---- Select nametable mirroring type
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* 0: Vertical
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* 1: Horizontal
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*/
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#include "mapinc.h"
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#include "../fds_apu.h"
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static uint8 reg0, reg1;
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static uint8 *WRAM = NULL;
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static uint32 WRAMSIZE;
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static SFORMAT StateRegs[] =
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{
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{ ®0, 1, "REG0" },
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{ ®1, 1, "REG1" },
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{ 0 }
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};
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static void Sync(void) {
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setchr8(0);
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setprg32(0x8000, ~0);
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setprg4(0xb800, reg0 & 0x07);
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setprg4(0xc800, 8 + reg1);
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setmirror(((reg0 >> 3) & 1) ^ 1);
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}
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/* 6000 - 6BFF - RAM
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* 6C00 - 6FFF - BANK 1K REG1
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* 7000 - 7FFF - BANK 4K REG0
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*/
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static DECLFW(UNLKS7030RamWrite0) {
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if ((A >= 0x6000) && A <= 0x6BFF) {
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WRAM[A - 0x6000] = V;
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} else if ((A >= 0x6C00) && A <= 0x6FFF) {
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CartBW(0xC800 + (A - 0x6C00), V);
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} else if ((A >= 0x7000) && A <= 0x7FFF) {
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CartBW(0xB800 + (A - 0x7000), V);
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}
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}
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static DECLFR(UNLKS7030RamRead0) {
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if ((A >= 0x6000) && A <= 0x6BFF) {
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return WRAM[A - 0x6000];
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} else if ((A >= 0x6C00) && A <= 0x6FFF) {
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return CartBR(0xC800 + (A - 0x6C00));
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} else if ((A >= 0x7000) && A <= 0x7FFF) {
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return CartBR(0xB800 + (A - 0x7000));
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}
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return 0;
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}
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/* B800 - BFFF - RAM
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* C000 - CBFF - BANK 3K
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* CC00 - D7FF - RAM
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*/
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static DECLFW(UNLKS7030RamWrite1) {
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if ((A >= 0xB800) && A <= 0xBFFF) {
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WRAM[0x0C00 + (A - 0xB800)] = V;
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} else if ((A >= 0xC000) && A <= 0xCBFF) {
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CartBW(0xCC00 + (A - 0xC000), V);
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} else if ((A >= 0xCC00) && A <= 0xD7FF) {
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WRAM[0x1400 + (A - 0xCC00)] = V;
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}
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}
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static DECLFR(UNLKS7030RamRead1) {
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if ((A >= 0xB800) && A <= 0xBFFF) {
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return WRAM[0x0C00 + (A - 0xB800)];
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} else if ((A >= 0xC000) && A <= 0xCBFF) {
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return CartBR(0xCC00 + (A - 0xC000));
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} else if ((A >= 0xCC00) && A <= 0xD7FF) {
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return WRAM[0x1400 + (A - 0xCC00)];
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}
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return 0;
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}
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static DECLFW(UNLKS7030Write0) {
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reg0 = A & 0xF;
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Sync();
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}
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static DECLFW(UNLKS7030Write1) {
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reg1 = A & 0xF;
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Sync();
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}
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static void UNLKS7030Power(void) {
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FDSSoundPower();
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reg0 = reg1 = ~0;
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Sync();
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SetReadHandler(0x6000, 0x7FFF, UNLKS7030RamRead0);
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SetWriteHandler(0x6000, 0x7FFF, UNLKS7030RamWrite0);
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SetReadHandler(0x8000, 0xFFFF, CartBR);
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SetWriteHandler(0x8000, 0x8FFF, UNLKS7030Write0);
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SetWriteHandler(0x9000, 0x9FFF, UNLKS7030Write1);
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SetReadHandler(0xB800, 0xD7FF, UNLKS7030RamRead1);
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SetWriteHandler(0xB800, 0xD7FF, UNLKS7030RamWrite1);
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}
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static void UNLKS7030Close(void) {
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if (WRAM)
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FCEU_gfree(WRAM);
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WRAM = NULL;
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}
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static void StateRestore(int version) {
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Sync();
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}
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void UNLKS7030_Init(CartInfo *info) {
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info->Power = UNLKS7030Power;
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info->Close = UNLKS7030Close;
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GameStateRestore = StateRestore;
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WRAMSIZE = 8192;
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WRAM = (uint8*)FCEU_gmalloc(WRAMSIZE);
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AddExState(WRAM, WRAMSIZE, 0, "WRAM");
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AddExState(&StateRegs, ~0, 0, 0);
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}
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