nesemu/rom/rom.c

//
// Created by william on 12/2/23.
//

#include <stdio.h>

#include "../include/rom.h"
#include "ines.c"
#include "../include/system.h"

Rom rom;

Rom *rom_get() {
    return &rom;
}

bool rom_load(char *path) {
    FILE *file = fopen(path, "r");
    if (!file) {
        log_error("Failed to open ROM");
        return false;
    }

    char header_buffer[ROM_HEADER_SIZE] = {0};
    size_t read_size = fread(header_buffer, sizeof(char), ROM_HEADER_SIZE, file);
    if (read_size < ROM_HEADER_SIZE) {
        log_error("Failed to read ROM");
        return false;
    }

    if (!rom_is_ines(header_buffer)) {
        log_error("Only iNes ROMs are supported");
        return false;
    }

    log_info("Reading iNes 1.0 ROM at %s", path);
    rom_ines_read(&rom, file);

    if (fclose(file) != 0) {
        log_error("Failed to close ROM file");
        return false;
    }

    return true;
}

void rom_unload() {
    free(rom.prg_rom);
    free(rom.chr_rom);
}