mapper_nrom.c


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static void mapper_nrom_init(struct nes_state *state) {
	// Nothing to initialize for NROM
}

static uint8_t mapper_nrom_read(struct nes_state *state, uint32_t addr) {
	uint32_t prg_size = state->ines.prg_size;

	uint32_t mask = (state->ines.prg_size == 16384) ? 0x3fff : 0x7fff;
	return state->rom[addr & mask];
}

static void mapper_nrom_write(struct nes_state *state, uint32_t addr, uint8_t value) {
	(void)state;
	(void)addr;
	(void)value;
}

static void mapper_nrom_tick(struct nes_state *state) {
	(void)state;
}