mirror of
https://github.com/dborth/fceugx.git
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124 lines
3.1 KiB
C++
124 lines
3.1 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) 2009 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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* Wario Land II (Kirby hack)
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*/
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#include "mapinc.h"
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static uint8 reg[8], chr[8];
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static uint8 *WRAM = NULL;
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static uint32 WRAMSIZE;
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static uint16 IRQCount, IRQa;
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static SFORMAT StateRegs[] =
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{
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{ reg, 8, "REGS" },
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{ chr, 8, "CHRS" },
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{ &IRQCount, 2, "IRQc" },
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{ &IRQa, 2, "IRQa" },
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{ 0 }
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};
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static void Sync(void) {
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int i;
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setprg8r(0x10, 0x6000, 0);
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setprg8(0x8000, reg[0]);
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setprg8(0xA000, reg[1]);
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setprg8(0xC000, reg[2]);
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setprg8(0xE000, ~0);
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for (i = 0; i < 8; i++)
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setchr1(i << 10, chr[i]);
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setmirror(reg[3] ^ 1);
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}
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static DECLFW(UNLSC127Write) {
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switch (A) {
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case 0x8000: reg[0] = V; break;
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case 0x8001: reg[1] = V; break;
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case 0x8002: reg[2] = V; break;
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case 0x9000: chr[0] = V; break;
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case 0x9001: chr[1] = V; break;
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case 0x9002: chr[2] = V; break;
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case 0x9003: chr[3] = V; break;
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case 0x9004: chr[4] = V; break;
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case 0x9005: chr[5] = V; break;
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case 0x9006: chr[6] = V; break;
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case 0x9007: chr[7] = V; break;
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case 0xC002: IRQa = 0; X6502_IRQEnd(FCEU_IQEXT); break;
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case 0xC005: IRQCount = V; break;
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case 0xC003: IRQa = 1; break;
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case 0xD001: reg[3] = V; break;
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}
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Sync();
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}
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static DECLFR(UNLSC127ProtRead) {
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return 0x20;
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}
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static void UNLSC127Power(void) {
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IRQCount = IRQa = 0;
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Sync();
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SetReadHandler(0x5800, 0x5800, UNLSC127ProtRead);
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SetReadHandler(0x6000, 0x7fff, CartBR);
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SetWriteHandler(0x6000, 0x7fff, CartBW);
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SetReadHandler(0x8000, 0xFFFF, CartBR);
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SetWriteHandler(0x8000, 0xFFFF, UNLSC127Write);
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FCEU_CheatAddRAM(WRAMSIZE >> 10, 0x6000, WRAM);
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}
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static void UNLSC127IRQ(void) {
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if (IRQa) {
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if(IRQCount > 0)
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IRQCount--;
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if (!IRQCount) {
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X6502_IRQBegin(FCEU_IQEXT);
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IRQa = 0;
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}
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}
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}
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static void UNLSC127Reset(void) {
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IRQCount = IRQa = 0;
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}
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static void UNLSC127Close(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 UNLSC127_Init(CartInfo *info) {
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info->Reset = UNLSC127Reset;
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info->Power = UNLSC127Power;
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info->Close = UNLSC127Close;
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GameHBIRQHook = UNLSC127IRQ;
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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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SetupCartPRGMapping(0x10, WRAM, WRAMSIZE, 1);
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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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