package com.grapeshot.halfnes.mappers;
import com.grapeshot.halfnes.*;
public class Sunsoft02Mapper extends Mapper {
boolean m93;
public Sunsoft02Mapper(int mappernum) {
super();
m93 = (mappernum == 93);
}
@Override
public void loadrom() throws BadMapperException {
//needs to be in every mapper. Fill with initial cfg
super.loadrom();
//swappable bank
for (int i = 0; i < 16; ++i) {
prg_map[i] = (1024 * i) & (prgsize - 1);
}
//fixed bank
for (int i = 1; i <= 16; ++i) {
prg_map[32 - i] = prgsize - (1024 * i);
}
for (int i = 0; i < 8; ++i) {
chr_map[i] = (1024 * i) & (chrsize - 1);
}
}
@Override
public final void cartWrite(final int addr, final int data) {
int prgselect;
if (addr < 0x8000 || addr > 0xffff) {
super.cartWrite(addr, data);
return;
}
if (m93) {
prgselect = (data >> 4) & 15;
} else {
prgselect = (data >> 4) & 7;
setmirroring(((data & (utils.BIT3)) != 0) ? MirrorType.SS_MIRROR1 : MirrorType.SS_MIRROR0);
int chrselect = ((data & 7) | (data >> 7) * 8);
//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);
}
}
}