mirror of
https://github.com/dborth/fceugx.git
synced 2024-11-01 15:05:05 +01:00
466 lines
11 KiB
C++
466 lines
11 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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* Copyright (C) 2011 FCEUX team
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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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* Bandai mappers
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*
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*/
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#include "mapinc.h"
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static uint8 reg[16], is153, x24c02;
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static uint8 IRQa;
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static int16 IRQCount, IRQLatch;
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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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{ reg, 16, "REGS" },
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{ &IRQa, 1, "IRQA" },
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{ &IRQCount, 2, "IRQC" },
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{ &IRQLatch, 2, "IRQL" }, // need for Famicom Jump II - Saikyou no 7 Nin (J) [!]
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{ 0 }
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};
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// x24C0x interface
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#define X24C0X_STANDBY 0
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#define X24C0X_ADDRESS 1
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#define X24C0X_WORD 2
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#define X24C0X_READ 3
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#define X24C0X_WRITE 4
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static uint8 x24c0x_data[256], x24c0x_state;
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static uint8 x24c0x_addr, x24c0x_word, x24c0x_latch, x24c0x_bitcount;
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static uint8 x24c0x_sda, x24c0x_scl, x24c0x_out, x24c0x_oe;
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static SFORMAT x24c0xStateRegs[] =
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{
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{ &x24c0x_addr, 1, "ADDR" },
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{ &x24c0x_word, 1, "WORD" },
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{ &x24c0x_latch, 1, "LATC" },
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{ &x24c0x_bitcount, 1, "BITC" },
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{ &x24c0x_sda, 1, "SDA" },
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{ &x24c0x_scl, 1, "SCL" },
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{ &x24c0x_out, 1, "OUT" },
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{ &x24c0x_oe, 1, "OE" },
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{ &x24c0x_state, 1, "STAT" },
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{ 0 }
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};
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static void x24c0x_init() {
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x24c0x_addr = x24c0x_word = x24c0x_latch = x24c0x_bitcount = x24c0x_sda = x24c0x_scl = x24c0x_oe = 0;
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x24c0x_state = X24C0X_STANDBY;
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}
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static void x24c0x_write(uint8 data) {
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uint8 sda = (data >> 6) & 1;
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uint8 scl = (data >> 5) & 1;
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x24c0x_oe = (data >> 7);
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if(x24c0x_scl && scl) {
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if(x24c0x_sda && !sda) { // START
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x24c0x_state = X24C0X_ADDRESS;
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x24c0x_bitcount = 0;
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x24c0x_addr = 0;
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} else if(!x24c0x_sda && sda) { //STOP
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x24c0x_state = X24C0X_STANDBY;
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}
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} else if(!x24c0x_scl && scl) { // RISING EDGE
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switch(x24c0x_state) {
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case X24C0X_ADDRESS:
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if(x24c0x_bitcount < 7) {
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x24c0x_addr <<= 1;
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x24c0x_addr |= sda;
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} else {
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if(!x24c02) // X24C01 mode
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x24c0x_word = x24c0x_addr;
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if(sda) { // READ COMMAND
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x24c0x_state = X24C0X_READ;
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} else { // WRITE COMMAND
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if(x24c02) // X24C02 mode
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x24c0x_state = X24C0X_WORD;
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else
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x24c0x_state = X24C0X_WRITE;
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}
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}
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x24c0x_bitcount++;
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break;
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case X24C0X_WORD:
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if(x24c0x_bitcount == 8) { // ACK
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x24c0x_word = 0;
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x24c0x_out = 0;
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} else { // WORD ADDRESS INPUT
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x24c0x_word <<= 1;
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x24c0x_word |= sda;
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if(x24c0x_bitcount == 16) { // END OF ADDRESS INPUT
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x24c0x_bitcount = 7;
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x24c0x_state = X24C0X_WRITE;
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}
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}
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x24c0x_bitcount++;
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break;
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case X24C0X_READ:
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if (x24c0x_bitcount == 8) { // ACK
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x24c0x_out = 0;
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x24c0x_latch = x24c0x_data[x24c0x_word];
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x24c0x_bitcount = 0;
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} else { // REAL OUTPUT
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x24c0x_out = x24c0x_latch >> 7;
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x24c0x_latch <<= 1;
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x24c0x_bitcount++;
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if(x24c0x_bitcount == 8) {
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x24c0x_word++;
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x24c0x_word &= 0xff;
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}
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}
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break;
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case X24C0X_WRITE:
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if (x24c0x_bitcount == 8) { // ACK
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x24c0x_out = 0;
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x24c0x_latch = 0;
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x24c0x_bitcount = 0;
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} else { // REAL INPUT
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x24c0x_latch <<= 1;
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x24c0x_latch |= sda;
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x24c0x_bitcount++;
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if(x24c0x_bitcount == 8) {
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x24c0x_data[x24c0x_word] = x24c0x_latch;
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x24c0x_word++;
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x24c0x_word &= 0xff;
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}
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}
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break;
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}
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}
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x24c0x_sda = sda;
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x24c0x_scl = scl;
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}
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static uint8 x24c0x_read() {
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return x24c0x_out << 4;
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}
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//
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static void Sync(void) {
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if (is153) {
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int base = (reg[0] & 1) << 4;
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setchr8(0);
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setprg16(0x8000, (reg[8] & 0x0F) | base);
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setprg16(0xC000, 0x0F | base);
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} else {
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int i;
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for (i = 0; i < 8; i++) setchr1(i << 10, reg[i]);
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setprg16(0x8000, reg[8]);
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setprg16(0xC000, ~0);
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}
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switch (reg[9] & 3) {
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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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}
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static DECLFW(BandaiWrite) {
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A &= 0x0F;
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if (A < 0x0A) {
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reg[A & 0x0F] = V;
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Sync();
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} else
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switch (A) {
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case 0x0A: X6502_IRQEnd(FCEU_IQEXT); IRQa = V & 1; IRQCount = IRQLatch; break;
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case 0x0B: IRQLatch &= 0xFF00; IRQLatch |= V; break;
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case 0x0C: IRQLatch &= 0xFF; IRQLatch |= V << 8; break;
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case 0x0D: x24c0x_write(V); break;
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}
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}
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static DECLFR(BandaiRead) {
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return (X.DB & 0xEF) | x24c0x_read();
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}
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static void BandaiIRQHook(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 = -1;
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}
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}
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}
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static void BandaiPower(void) {
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IRQa = 0;
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x24c0x_init();
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Sync();
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SetReadHandler(0x6000, 0x7FFF, BandaiRead);
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SetReadHandler(0x8000, 0xFFFF, CartBR);
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SetWriteHandler(0x6000, 0xFFFF, BandaiWrite);
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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 Mapper16_Init(CartInfo *info) {
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x24c02 = 1;
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is153 = 0;
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info->Power = BandaiPower;
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MapIRQHook = BandaiIRQHook;
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info->battery = 1;
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info->SaveGame[0] = x24c0x_data;
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info->SaveGameLen[0] = 256;
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AddExState(x24c0x_data, 256, 0, "DATA");
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GameStateRestore = StateRestore;
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AddExState(&x24c0xStateRegs, ~0, 0, 0);
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AddExState(&StateRegs, ~0, 0, 0);
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}
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void Mapper159_Init(CartInfo *info) {
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x24c02 = 0;
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is153 = 0;
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info->Power = BandaiPower;
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MapIRQHook = BandaiIRQHook;
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info->battery = 1;
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info->SaveGame[0] = x24c0x_data;
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info->SaveGameLen[0] = 128;
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AddExState(x24c0x_data, 128, 0, "DATA");
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GameStateRestore = StateRestore;
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AddExState(&x24c0xStateRegs, ~0, 0, 0);
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AddExState(&StateRegs, ~0, 0, 0);
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}
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// Famicom jump 2:
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// 0-7: Lower bit of data selects which 256KB PRG block is in use.
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// This seems to be a hack on the developers' part, so I'll make emulation
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// of it a hack(I think the current PRG block would depend on whatever the
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// lowest bit of the CHR bank switching register that corresponds to the
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// last CHR address read).
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static void M153Power(void) {
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Sync();
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setprg8r(0x10, 0x6000, 0);
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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, BandaiWrite);
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FCEU_CheatAddRAM(WRAMSIZE >> 10, 0x6000, WRAM);
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}
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static void M153Close(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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void Mapper153_Init(CartInfo *info) {
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is153 = 1;
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info->Power = M153Power;
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info->Close = M153Close;
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MapIRQHook = BandaiIRQHook;
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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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if (info->battery) {
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info->SaveGame[0] = WRAM;
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info->SaveGameLen[0] = WRAMSIZE;
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}
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GameStateRestore = StateRestore;
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AddExState(&StateRegs, ~0, 0, 0);
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}
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// Datach Barcode Battler
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static uint8 BarcodeData[256];
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static int BarcodeReadPos;
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static int BarcodeCycleCount;
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static uint32 BarcodeOut;
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int FCEUI_DatachSet(const uint8 *rcode) {
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int prefix_parity_type[10][6] = {
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{ 0, 0, 0, 0, 0, 0 }, { 0, 0, 1, 0, 1, 1 }, { 0, 0, 1, 1, 0, 1 }, { 0, 0, 1, 1, 1, 0 },
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{ 0, 1, 0, 0, 1, 1 }, { 0, 1, 1, 0, 0, 1 }, { 0, 1, 1, 1, 0, 0 }, { 0, 1, 0, 1, 0, 1 },
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{ 0, 1, 0, 1, 1, 0 }, { 0, 1, 1, 0, 1, 0 }
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};
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int data_left_odd[10][7] = {
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{ 0, 0, 0, 1, 1, 0, 1 }, { 0, 0, 1, 1, 0, 0, 1 }, { 0, 0, 1, 0, 0, 1, 1 }, { 0, 1, 1, 1, 1, 0, 1 },
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{ 0, 1, 0, 0, 0, 1, 1 }, { 0, 1, 1, 0, 0, 0, 1 }, { 0, 1, 0, 1, 1, 1, 1 }, { 0, 1, 1, 1, 0, 1, 1 },
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{ 0, 1, 1, 0, 1, 1, 1 }, { 0, 0, 0, 1, 0, 1, 1 }
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};
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int data_left_even[10][7] = {
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{ 0, 1, 0, 0, 1, 1, 1 }, { 0, 1, 1, 0, 0, 1, 1 }, { 0, 0, 1, 1, 0, 1, 1 }, { 0, 1, 0, 0, 0, 0, 1 },
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{ 0, 0, 1, 1, 1, 0, 1 }, { 0, 1, 1, 1, 0, 0, 1 }, { 0, 0, 0, 0, 1, 0, 1 }, { 0, 0, 1, 0, 0, 0, 1 },
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{ 0, 0, 0, 1, 0, 0, 1 }, { 0, 0, 1, 0, 1, 1, 1 }
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};
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int data_right[10][7] = {
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{ 1, 1, 1, 0, 0, 1, 0 }, { 1, 1, 0, 0, 1, 1, 0 }, { 1, 1, 0, 1, 1, 0, 0 }, { 1, 0, 0, 0, 0, 1, 0 },
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{ 1, 0, 1, 1, 1, 0, 0 }, { 1, 0, 0, 1, 1, 1, 0 }, { 1, 0, 1, 0, 0, 0, 0 }, { 1, 0, 0, 0, 1, 0, 0 },
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{ 1, 0, 0, 1, 0, 0, 0 }, { 1, 1, 1, 0, 1, 0, 0 }
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};
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uint8 code[13 + 1];
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uint32 tmp_p = 0;
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int i, j;
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int len;
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for (i = len = 0; i < 13; i++) {
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if (!rcode[i]) break;
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if ((code[i] = rcode[i] - '0') > 9)
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return(0);
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len++;
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}
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if (len != 13 && len != 12 && len != 8 && len != 7) return(0);
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#define BS(x) BarcodeData[tmp_p] = x; tmp_p++
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for (j = 0; j < 32; j++) {
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BS(0x00);
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}
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/* Left guard bars */
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BS(1); BS(0); BS(1);
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if (len == 13 || len == 12) {
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uint32 csum;
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for (i = 0; i < 6; i++)
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if (prefix_parity_type[code[0]][i]) {
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for (j = 0; j < 7; j++) {
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BS(data_left_even[code[i + 1]][j]);
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}
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} else
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for (j = 0; j < 7; j++) {
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BS(data_left_odd[code[i + 1]][j]);
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}
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/* Center guard bars */
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BS(0); BS(1); BS(0); BS(1); BS(0);
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for (i = 7; i < 12; i++)
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for (j = 0; j < 7; j++) {
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BS(data_right[code[i]][j]);
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}
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csum = 0;
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for (i = 0; i < 12; i++) csum += code[i] * ((i & 1) ? 3 : 1);
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csum = (10 - (csum % 10)) % 10;
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for (j = 0; j < 7; j++) {
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BS(data_right[csum][j]);
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}
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} else if (len == 8 || len == 7) {
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uint32 csum = 0;
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for (i = 0; i < 7; i++) csum += (i & 1) ? code[i] : (code[i] * 3);
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csum = (10 - (csum % 10)) % 10;
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for (i = 0; i < 4; i++)
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for (j = 0; j < 7; j++) {
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BS(data_left_odd[code[i]][j]);
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}
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/* Center guard bars */
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BS(0); BS(1); BS(0); BS(1); BS(0);
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for (i = 4; i < 7; i++)
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for (j = 0; j < 7; j++) {
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BS(data_right[code[i]][j]);
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}
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for (j = 0; j < 7; j++) {
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BS(data_right[csum][j]);
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}
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}
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/* Right guard bars */
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BS(1); BS(0); BS(1);
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for (j = 0; j < 32; j++) {
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BS(0x00);
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}
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BS(0xFF);
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#undef BS
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BarcodeReadPos = 0;
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BarcodeOut = 0x8;
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BarcodeCycleCount = 0;
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return(1);
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}
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static void BarcodeIRQHook(int a) {
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BandaiIRQHook(a);
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BarcodeCycleCount += a;
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if (BarcodeCycleCount >= 1000) {
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BarcodeCycleCount -= 1000;
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if (BarcodeData[BarcodeReadPos] == 0xFF) {
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BarcodeOut = 0;
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} else {
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BarcodeOut = (BarcodeData[BarcodeReadPos] ^ 1) << 3;
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BarcodeReadPos++;
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}
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}
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}
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static DECLFR(BarcodeRead) {
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return BarcodeOut;
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}
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static void M157Power(void) {
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IRQa = 0;
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BarcodeData[0] = 0xFF;
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BarcodeReadPos = 0;
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BarcodeOut = 0;
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BarcodeCycleCount = 0;
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Sync();
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SetWriteHandler(0x6000, 0xFFFF, BandaiWrite);
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SetReadHandler(0x6000, 0x7FFF, BarcodeRead);
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SetReadHandler(0x8000, 0xFFFF, CartBR);
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}
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void Mapper157_Init(CartInfo *info) {
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is153 = 1;
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info->Power = M157Power;
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MapIRQHook = BarcodeIRQHook;
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GameInfo->cspecial = SIS_DATACH;
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GameStateRestore = StateRestore;
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AddExState(&StateRegs, ~0, 0, 0);
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}
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