emu_nes/ppu.c

#include "ppu.h"

struct ppu ppu = {0};

void
ppu_tick(void)
{
	ppu.cycles++;
	if (ppu.cycles >= 341) {
		ppu.cycles -= 341;
		ppu.scanlines++;
	}
	if (ppu.scanlines >= 262)
		ppu.scanlines -= 262;
}

uint8_t
ppu_read(uint16_t addr)
{
}

void
ppu_write(uint16_t addr, uint8_t byte)
{
	static uint8_t prev;

	prev = byte;
}