#include <cstring>
#include <string.h>
#include <stdint.h>
#include "../bus.h"

#define VIDEO_BASE_ADDR 0xFFFB8000

static uint16_t memory[320*200];

static int
read(uint32_t addr, void *data, size_t sz)
{
	addr = addr - VIDEO_BASE_ADDR;

	memcpy(data, ((uint8_t *)memory) + addr, sz);

	return (sz);
}

static int
write(uint32_t addr, const void *data, size_t sz)
{
	addr = addr - VIDEO_BASE_ADDR;

	memcpy(((uint8_t *)memory) + addr, data, sz);

	return (sz);
}

struct bus video_memory = {
	"video-memory",
	{VIDEO_BASE_ADDR, VIDEO_BASE_ADDR + (320 * 200 * sizeof(uint16_t))},
	&read,
	&write,
};