/* Author      : Rick van der Zwet
 * S-number    : 0433373
 * Version     : $Id: control.h 363 2007-12-03 06:07:31Z rick $
 * Copyright   : FreeBSD Licence
 * Description : Memory unit header
 */

#ifndef CONTROL_H
#define CONTROL_H

#include "sim.h"
#include "alu.h"
#include "memory.h"
#include "imm.h"
#include "constant.h"
#include "datapath.h"


typedef enum { NEXT, UNCOND, MEMBUSY, DECODE1, DECODE2, DECODE3,
               ZEROVALUE, NEGVALUE, RTYPEIR } control_cond_t;


/* XXX: Not that effient, might be the use of bitfields */
typedef struct {
    address_t address;
    control_t control;
    control_cond_t cond;
    micro_address_t jump;
} microcode_t;

typedef struct {
    uint8_t ocode;
    uint8_t fcode;
    micro_address_t target;
} decode_t;


micro_address_t mpc;
void set_signals();
void find_new_mPC();
void control_init();

#endif