#ifndef VIA_6522_H
#define VIA_6522_H

#include "device.h"
#include "bus.h"

#include <stdint.h>
#include <stdbool.h>

#ifdef WITH_GUI
#include <SDL.h>
#endif

// the VIA connects to sub-devices itself via the bus. It also
// has things like timers and internal registers
// the VIA is initialized with a base address, the addresses for
// the registers are relative to this base.
enum {
	PORTA = 0x01,
	DDRA  = 0x03
};

typedef struct via_6522_t
{
	device_t base;
	
	uint16_t addr;
	
	uint8_t ddra;

	bool debug;
	
	bus_t bus;
} via_6522_t;

void via_6522_init( via_6522_t *via, uint16_t addr, bool initialize );
void via_6522_register( via_6522_t *via, device_t *device );

uint8_t via_6522_read( void *obj, uint16_t addr );
void via_6522_write( void *obj, uint16_t addr, uint8_t data );
#ifdef WITH_GUI
void via_6522_draw( void *obj, SDL_Renderer *renderer );
#endif
void via_6522_deinit( void *obj );

#endif