Project: diglab1

diglab1.v

module diglab1(
  // Clock Input (50 MHz)
  input  CLOCK_50,
  //  Push Buttons
  input  [3:0]  KEY,
  //  DPDT Switches 
  input  [17:0]  SW,
  //  7-SEG Displays
  output  [6:0]  HEX0, HEX1, HEX2, HEX3, HEX4, HEX5, HEX6, HEX7,
  //  LEDs
  output  [8:0]  LEDG,  //  LED Green[8:0]
  output  [17:0]  LEDR, //  LED Red[17:0]
  //  GPIO Connections
  inout  [35:0]  GPIO_0, GPIO_1
);

//  set all inout ports to tri-state
assign  GPIO_0    =  36'hzzzzzzzzz;
assign  GPIO_1    =  36'hzzzzzzzzz;


// Connect dip switches to red LEDs
assign LEDR[17:0] = SW[17:0];

// turn off green LEDs
assign LEDG[8:0] = 0;

wire [15:0] A;

// map to 7-segment displays

hex_7seg dsp0(A[3:0],HEX0);
hex_7seg dsp1(A[7:4],HEX1);
hex_7seg dsp2(A[11:8],HEX2);
hex_7seg dsp3(A[15:12],HEX3);


wire [6:0] blank = ~7'h00; 

// blank remaining digits
assign HEX4 = blank;
assign HEX5 = blank;
assign HEX6 = blank;
//assign HEX7 = blank;
assign HEX7 = ~SW[6:0];

// control (set) value of A, signal with KEY3

//always @(negedge KEY[3])
//    A <= SW[15:0];

assign A = SW[15:0];

endmodule

hex_7seg.v

module hex_7seg(hex_digit,seg);
input [3:0] hex_digit;
output [6:0] seg;
reg [6:0] seg;
// seg = {g,f,e,d,c,b,a};
// 0 is on and 1 is off

always @ (hex_digit)
case (hex_digit)
        4'h0: seg = ~7'h3F;
        4'h1: seg = ~7'h06;     // ---a----
        4'h2: seg = ~7'h5B;     // |      |
        4'h3: seg = ~7'h4F;     // f      b
        4'h4: seg = ~7'h66;     // |      |
        4'h5: seg = ~7'h6D;     // ---g----
        4'h6: seg = ~7'h7D;     // |      |
        4'h7: seg = ~7'h07;     // e      c
        4'h8: seg = ~7'h7F;     // |      |
        4'h9: seg = ~7'h67;     // ---d----
        4'ha: seg = ~7'h77;
        4'hb: seg = ~7'h7C;
        4'hc: seg = ~7'h39;
        4'hd: seg = ~7'h5E;
        4'he: seg = ~7'h79;
        4'hf: seg = ~7'h71;
endcase

endmodule

Quartus Compilation Summary

fit.summary

Fitter Status : Successful - Mon Sep 01 23:27:04 2008
Quartus II Version : 7.2 Build 175 11/20/2007 SP 1 SJ Web Edition
Revision Name : diglab1
Top-level Entity Name : diglab1
Family : Cyclone II
Device : EP2C35F672C6
Timing Models : Final
Total logic elements : 28 / 33,216 ( < 1 % )
    Total combinational functions : 28 / 33,216 ( < 1 % )
    Dedicated logic registers : 0 / 33,216 ( 0 % )
Total registers : 0
Total pins : 178 / 475 ( 37 % )
Total virtual pins : 0
Total memory bits : 0 / 483,840 ( 0 % )
Embedded Multiplier 9-bit elements : 0 / 70 ( 0 % )
Total PLLs : 0 / 4 ( 0 % )

tan.summary

--------------------------------------------------------------------------------------
Timing Analyzer Summary
--------------------------------------------------------------------------------------

Type           : Worst-case tpd
Slack          : N/A
Required Time  : None
Actual Time    : 10.805 ns
From           : SW[14]
To             : HEX3[6]
From Clock     : --
To Clock       : --
Failed Paths   : 0

Type           : Total number of failed paths
Slack          : 
Required Time  : 
Actual Time    : 
From           : 
To             : 
From Clock     : 
To Clock       : 
Failed Paths   : 0

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