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#include "mapper_001.c"
// #include "mapper_mmc1.c"
// #include "mapper_uxrom.c"
#include "mapper_066.c"
struct mapper_entry {
int id;
uint8_t (*prg_read)(struct nes_state *state, uint32_t addr);
void (*prg_write)(struct nes_state *state, uint32_t addr, uint8_t value);
uint8_t (*chr_read)(struct nes_state *state, uint32_t addr);
void (*chr_write)(struct nes_state *state, uint32_t addr, uint8_t value);
uint8_t (*ciram_read)(struct nes_state *state, uint32_t addr);
void (*ciram_write)(struct nes_state *state, uint32_t addr, uint8_t value);
void (*tick)(struct nes_state *state);
void (*init)(struct nes_state *state);
};
static struct mapper_entry mapper_table[] = {
{ 0, mapper_001_prg_read, mapper_001_prg_write, mapper_001_chr_read, mapper_001_chr_write, mapper_001_ciram_read, mapper_001_ciram_write, mapper_001_tick, mapper_001_init },
{ 66, mapper_066_prg_read, mapper_066_prg_write, mapper_066_chr_read, mapper_066_chr_write, mapper_066_ciram_read, mapper_066_ciram_write, mapper_066_tick, mapper_066_init },
// { 1, mapper_mmc1_read, ... }, etc
};
static void mapper_setup(struct nes_state *state) {
uint32_t mapper = state->ines.mapper;
for(uint32_t i = 0; i < sizeof(mapper_table)/sizeof(mapper_table[0]); i++) {
if(mapper_table[i].id == mapper) {
state->mapper.prg_read = mapper_table[i].prg_read;
state->mapper.prg_write = mapper_table[i].prg_write;
state->mapper.chr_read = mapper_table[i].chr_read;
state->mapper.chr_write = mapper_table[i].chr_write;
state->mapper.ciram_read = mapper_table[i].ciram_read;
state->mapper.ciram_write = mapper_table[i].ciram_write;
state->mapper.tick = mapper_table[i].tick;
state->mapper.init = mapper_table[i].init;
state->mapper.init(state);
return;
}
}
// NOTE(peter): Not sure how safe this is, but it sure is funny...
printf("Unsupported mapper %d, falling back to NROM\n", mapper);
state->mapper.prg_read = mapper_001_prg_read;
state->mapper.prg_write = mapper_001_prg_write;
state->mapper.chr_read = mapper_001_chr_read;
state->mapper.chr_write = mapper_001_chr_write;
state->mapper.ciram_read = mapper_001_ciram_read;
state->mapper.ciram_write = mapper_001_ciram_write;
state->mapper.tick = mapper_001_tick;
state->mapper.init = mapper_001_init;
state->mapper.init(state);
}
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