mirror of
https://github.com/dborth/fceugx.git
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237 lines
6.7 KiB
C++
237 lines
6.7 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) 2006 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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* YOKO mapper, almost the same as 83, TODO: figure out difference
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* Mapper 83 - 30-in-1 mapper, two modes for single game carts, one mode for
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* multigame Dragon Ball Z Party
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*
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* Mortal Kombat 2 YOKO
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* N-CXX(M), XX - PRG+CHR, 12 - 128+256, 22 - 256+256, 14 - 128+512
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*
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*/
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#include "mapinc.h"
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static uint8 mode, bank, reg[11], low[4], dip, IRQa;
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static int32 IRQCount;
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static uint8 *WRAM = NULL;
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static uint32 WRAMSIZE;
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static uint8 is2kbank, isnot2kbank;
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static SFORMAT StateRegs[] =
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{
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{ &mode, 1, "MODE" },
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{ &bank, 1, "BANK" },
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{ &IRQCount, 4, "IRQC" },
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{ &IRQa, 1, "IRQA" },
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{ reg, 11, "REGS" },
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{ low, 4, "LOWR" },
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{ &is2kbank, 1, "IS2K" },
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{ &isnot2kbank, 1, "NT2K" },
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{ 0 }
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};
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static void UNLYOKOSync(void) {
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setmirror((mode & 1) ^ 1);
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setchr2(0x0000, reg[3]);
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setchr2(0x0800, reg[4]);
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setchr2(0x1000, reg[5]);
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setchr2(0x1800, reg[6]);
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if (mode & 0x10) {
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uint32 base = (bank & 8) << 1;
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setprg8(0x8000, (reg[0] & 0x0f) | base);
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setprg8(0xA000, (reg[1] & 0x0f) | base);
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setprg8(0xC000, (reg[2] & 0x0f) | base);
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setprg8(0xE000, 0x0f | base);
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} else {
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if (mode & 8)
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setprg32(0x8000, bank >> 1);
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else{
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setprg16(0x8000, bank);
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setprg16(0xC000, ~0);
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}
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}
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}
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static void M83Sync(void) {
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switch (mode & 3) { // check if it is truth
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case 0: setmirror(MI_V); break;
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case 1: setmirror(MI_H); break;
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case 2: setmirror(MI_0); break;
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case 3: setmirror(MI_1); break;
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}
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if (is2kbank && !isnot2kbank) {
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setchr2(0x0000, reg[0]);
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setchr2(0x0800, reg[1]);
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setchr2(0x1000, reg[6]);
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setchr2(0x1800, reg[7]);
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} else {
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int x;
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for (x = 0; x < 8; x++)
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setchr1(x << 10, reg[x] | ((bank & 0x30) << 4));
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}
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setprg8r(0x10, 0x6000, 0);
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if (mode & 0x40) {
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setprg16(0x8000, (bank & 0x3F)); // DBZ Party [p1]
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setprg16(0xC000, (bank & 0x30) | 0xF);
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} else {
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setprg8(0x8000, reg[8]);
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setprg8(0xA000, reg[9]);
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setprg8(0xC000, reg[10]);
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setprg8(0xE000, ~0);
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}
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}
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static DECLFW(UNLYOKOWrite) {
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switch (A & 0x8C17) {
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case 0x8000: bank = V; UNLYOKOSync(); break;
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case 0x8400: mode = V; UNLYOKOSync(); break;
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case 0x8800: IRQCount &= 0xFF00; IRQCount |= V; X6502_IRQEnd(FCEU_IQEXT); break;
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case 0x8801: IRQa = mode & 0x80; IRQCount &= 0xFF; IRQCount |= V << 8; break;
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case 0x8c00: reg[0] = V; UNLYOKOSync(); break;
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case 0x8c01: reg[1] = V; UNLYOKOSync(); break;
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case 0x8c02: reg[2] = V; UNLYOKOSync(); break;
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case 0x8c10: reg[3] = V; UNLYOKOSync(); break;
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case 0x8c11: reg[4] = V; UNLYOKOSync(); break;
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case 0x8c16: reg[5] = V; UNLYOKOSync(); break;
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case 0x8c17: reg[6] = V; UNLYOKOSync(); break;
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}
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}
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static DECLFW(M83Write) {
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switch (A) {
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case 0x8000: is2kbank = 1;
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case 0xB000: // Dragon Ball Z Party [p1] BMC
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case 0xB0FF: // Dragon Ball Z Party [p1] BMC
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case 0xB1FF: bank = V; mode |= 0x40; M83Sync(); break; // Dragon Ball Z Party [p1] BMC
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case 0x8100: mode = V | (mode & 0x40); M83Sync(); break;
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case 0x8200: IRQCount &= 0xFF00; IRQCount |= V; X6502_IRQEnd(FCEU_IQEXT); break;
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case 0x8201: IRQa = mode & 0x80; IRQCount &= 0xFF; IRQCount |= V << 8; break;
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case 0x8300: reg[8] = V; mode &= 0xBF; M83Sync(); break;
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case 0x8301: reg[9] = V; mode &= 0xBF; M83Sync(); break;
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case 0x8302: reg[10] = V; mode &= 0xBF; M83Sync(); break;
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case 0x8310: reg[0] = V; M83Sync(); break;
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case 0x8311: reg[1] = V; M83Sync(); break;
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case 0x8312: reg[2] = V; isnot2kbank = 1; M83Sync(); break;
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case 0x8313: reg[3] = V; isnot2kbank = 1; M83Sync(); break;
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case 0x8314: reg[4] = V; isnot2kbank = 1; M83Sync(); break;
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case 0x8315: reg[5] = V; isnot2kbank = 1; M83Sync(); break;
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case 0x8316: reg[6] = V; M83Sync(); break;
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case 0x8317: reg[7] = V; M83Sync(); break;
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}
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}
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static DECLFR(UNLYOKOReadDip) {
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return (X.DB & 0xFC) | dip;
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}
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static DECLFR(UNLYOKOReadLow) {
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return low[A & 3];
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}
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static DECLFW(UNLYOKOWriteLow) {
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low[A & 3] = V;
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}
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static void UNLYOKOPower(void) {
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mode = bank = 0;
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dip = 3;
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UNLYOKOSync();
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SetReadHandler(0x5000, 0x53FF, UNLYOKOReadDip);
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SetReadHandler(0x5400, 0x5FFF, UNLYOKOReadLow);
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SetWriteHandler(0x5400, 0x5FFF, UNLYOKOWriteLow);
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SetReadHandler(0x8000, 0xFFFF, CartBR);
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SetWriteHandler(0x8000, 0xFFFF, UNLYOKOWrite);
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}
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static void M83Power(void) {
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is2kbank = 0;
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isnot2kbank = 0;
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mode = bank = 0;
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dip = 0;
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M83Sync();
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SetReadHandler(0x5000, 0x5000, UNLYOKOReadDip);
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SetReadHandler(0x5100, 0x5103, UNLYOKOReadLow);
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SetWriteHandler(0x5100, 0x5103, UNLYOKOWriteLow);
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SetReadHandler(0x6000, 0x7fff, CartBR);
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SetWriteHandler(0x6000, 0x7fff, CartBW); // Pirate Dragon Ball Z Party [p1] used if for saves instead of seraial EEPROM
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SetReadHandler(0x8000, 0xffff, CartBR);
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SetWriteHandler(0x8000, 0xffff, M83Write);
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}
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static void UNLYOKOReset(void) {
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dip = (dip + 1) & 3;
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mode = bank = 0;
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UNLYOKOSync();
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}
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static void M83Reset(void) {
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dip ^= 1;
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M83Sync();
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}
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static void M83Close(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 UNLYOKOIRQHook(int a) {
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if (IRQa) {
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IRQCount -= a;
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if (IRQCount < 0) {
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X6502_IRQBegin(FCEU_IQEXT);
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IRQa = 0;
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IRQCount = 0xFFFF;
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}
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}
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}
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static void UNLYOKOStateRestore(int version) {
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UNLYOKOSync();
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}
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static void M83StateRestore(int version) {
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M83Sync();
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}
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void UNLYOKO_Init(CartInfo *info) {
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info->Power = UNLYOKOPower;
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info->Reset = UNLYOKOReset;
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MapIRQHook = UNLYOKOIRQHook;
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GameStateRestore = UNLYOKOStateRestore;
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AddExState(&StateRegs, ~0, 0, 0);
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}
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void Mapper83_Init(CartInfo *info) {
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info->Power = M83Power;
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info->Reset = M83Reset;
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info->Close = M83Close;
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MapIRQHook = UNLYOKOIRQHook;
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GameStateRestore = M83StateRestore;
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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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