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mapper_nsf.cpp
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mapper_nsf.cpp
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#include "mapper_nsf.h"
#include<cstdio>
mapper_nsf::mapper_nsf(rom* r) : mapper(r) {
cart = r;
reset_map();
}
const unsigned int mapper_nsf::get_pbyte(const unsigned int addr) {
int segment = (addr / 0x1000) - 8;
int offset = addr % 0x1000;
return cart->prom[bank[segment]*0x1000 + offset];
}
const unsigned int mapper_nsf::get_pword(const unsigned int addr) {
int segment = (addr / 0x1000) - 8;
int offset = addr % 0x1000;
return cart->prom_w[bank[segment]*0x1000 + offset];
}
const unsigned int mapper_nsf::get_cbyte(const unsigned int addr) {
return 0;
}
void mapper_nsf::put_pbyte(const unsigned int cycle, const unsigned int val,const unsigned int addr) {
if(addr>=0x5ff8 && addr <= 0x5fff) {
bank[addr - 0x5ff8] = val;
}
//printf("%02x %02x %02x %02x %02x %02x %02x %02x\n", bank[0], bank[1], bank[2], bank[3], bank[4], bank[5], bank[6], bank[7]);
}
bool mapper_nsf::put_cbyte(const unsigned int val,const unsigned int addr) {
return false;
}
int mapper_nsf::changed_crom() {
return 0;
}
void mapper_nsf::ppu_change(unsigned int cycle, unsigned int addr, unsigned int val) {
}
rom::ppu_change_t mapper_nsf::cycle_forward(unsigned int cycle) {
rom::ppu_change_t a;
a.val = 0;
return a;
}
void mapper_nsf::reset_map() {
if(cart->uses_banks) {
for(int i=0;i<8;++i)
bank[i] = cart->get_header(0x70+i);
}
else {
for(int i=0;i<8;++i)
bank[i] = i;
}
}