// ----------------------------------------------------------------------------
//
// Rafael Lopez      07/20/00
// University of California Riverside
// Department of Computer Science -- Embedded Systems
//
// ----------------------------------------------------------------------------

#ifndef SIM2_H
#define SIM2_H

#include <iostream.h>

// ---------------------------------------------------------------------------
//
// Constants 
//
// ---------------------------------------------------------------------------

static const unsigned int byte = 8;
static const unsigned int mask = 128;
static const unsigned int adrs = 4;
static const unsigned int progsize = 1024;
static const unsigned int memsize = 256;
static const unsigned int regs = 16;
static const unsigned int cycles = 4;

enum { MOV0, MOV1, MOV2, MOV3, ADD, SUB, JZ };

// --------------------------------------------------------------------------
//
// Instruction Structure
//
// --------------------------------------------------------------------------
struct instruction
{
    int OPCODE;
    int Rn;
    int Rm;
};

instruction program[ progsize ];
int memory[ memsize ] = {0};

// --------------------------------------------------------------------------
//
// Functions
// 
// --------------------------------------------------------------------------

int decode( ifstream &, int , int );
void twos_complement( int );
int run_program( int );
void print_stats( int [], int );

#endif;