/******************************************************************************

Project #4 skeleton

******************************************************************************/

#include <Sim.h>

void circuits( SD, Signal, Signal, Signal, Signal, Signal, Signal );

/******************************************************************************

Function "simnet" -- test bed for student circuits

******************************************************************************/

void simnet()

{

Signal Init, Clock, w, x, y, z;

// Insert your Pulsers here

Pulser ((SD("1a"), "c - Clock"), Clock, 'c', 10000);

Pulser ((SD("2a"), "i - Init"), Init, 'i', 10000);

circuits( SD("5b-8b"), Init, Clock, w, x, y, z );

// Insert your Probes here

Probe ((SD("2d"), "w"), w);

Probe ((SD("3d"), "x"), x);

Probe ((SD("4d"), "y"), y);

Probe ((SD("5d"), "z"), z);

}

/******************************************************************************

Function "circuits" -- implementation of student circuits

******************************************************************************/

void circuits( SD sd, Signal Init, Signal Clock,

Signal w, Signal x, Signal y, Signal z )

{

Module( (sd, "circuits"), (Init, Clock), (w, x, y, z) );

// Insert your declarations for any auxiliary Signals here

Signal W, X, Y, Z;

// Insert your DFFs here

Dff( SD("1b"), ( Init, W, Clock, Zero ), w );

Dff( SD("2b"), ( Zero, X, Clock, Init ), x );

Dff( SD("3b"), ( Init, Y, Clock, Zero ), y );

Dff( SD("4b"), ( Zero, Z, Clock, Init ), z );

// Insert your combinational logic here (Not, And, Or gates)

Signal notx, noty, notz;

Not ( SD(sd,"1d"), x, notx );

Not ( SD(sd,"2d"), y, noty );

Not ( SD(sd,"3d"), z, notz );

Signal and1, and2, and3, and4;

And ( SD(sd,"1e"), (notx, noty), and1 );

And ( SD(sd,"2e"), (x, notz), and2 );

And ( SD(sd,"3e"), (w, y), and3 );

And ( SD(sd,"4e"), (noty, notz), and4 );

Or ( SD(sd,"1f"), (and1, and1), W );

Or ( SD(sd,"2f"), (and2, and3), X );

Or ( SD(sd,"3f"), (z, z), Y );

Or ( SD(sd,"4f"), (and4, and4), Z );

}