/*
* HalfNES by Andrew Hoffman
* Licensed under the GNU GPL Version 3. See LICENSE file
*/
package com.grapeshot.halfnes.mappers;
import com.grapeshot.halfnes.*;
/**
*
* @author Andrew
*/
public class Mapper78 extends Mapper {
@Override
public void loadrom() throws BadMapperException {
//needs to be in every mapper. Fill with initial cfg
super.loadrom();
for (int i = 1; i <= 32; ++i) {
prg_map[32 - i] = prgsize - (1024 * i);
}
for (int i = 1; i <= 8; ++i) {
chr_map[8 - i] = chrsize - (1024 * i);
}
}
@Override
public final void cartWrite(final int addr, final int data) {
//System.out.println(data);
if (addr < 0x8000 || addr > 0xffff) {
super.cartWrite(addr, data);
return;
}
int prgselect = data & 7;
int chrselect = (data >> 4) & 0xf;
if (crc == 0x42392440) //Cosmo Carrier
{
setmirroring(((data & (utils.BIT3)) != 0) ? MirrorType.SS_MIRROR1 : MirrorType.SS_MIRROR0);
} else {
setmirroring(((data & (utils.BIT3)) != 0) ? MirrorType.V_MIRROR : MirrorType.H_MIRROR);
}
//remap CHR bank
for (int i = 0; i < 8; ++i) {
chr_map[i] = (1024 * (i + 8 * chrselect)) & (chrsize - 1);
}
//remap PRG bank
for (int i = 0; i < 16; ++i) {
prg_map[i] = (1024 * (i + 16 * prgselect)) & (prgsize - 1);
}
}
}