ROM

public final class ROM {

    /**
     * Gets the ROM size of the cartridge.
     * @param opcode The size opcode.
     * @return The ROM size of the cartridge.
     */
    private int getSize(final byte opcode) {
        if (opcode < 8) {
            return (32 * 1024) << opcode;
        } else if (opcode == 52) {
            return 1179648;
        } else if (opcode == 53) {
            return 1310720;
        } else if (opcode == 54) {
            return 1572864;
        }
        System.err.println("Unknown ROM size");
        return -1;
    }


}