Hello i am new on fpga and verilog.in this code i have taken input from keypad and want to make a calculator and display on lcd.help me in code please how to make alu of calculator and modification in this code regarding input and how to display on 8 bit lcd please help.

`timescale 1ns / 1ps
//////////////////////////////////////////////////////////////////////////////////
// Company: 
// Engineer: 
// 
// Create Date:    14:53:29 10/15/2011 
// Design Name: 
// Module Name:    kepad 
// Project Name: 
// Target Devices: 
// Tool versions: 
// Description: 
//
// Dependencies: 
//
// Revision: 
// Revision 0.01 - File Created
// Additional Comments: 
//
//////////////////////////////////////////////////////////////////////////////////
module kepad(
    input [3:0] in1,
    output reg [3:0] out1,
	 output reg [3:0] sevenseg,
    input clk
    );
	 reg [3:0] num1=0;
	 reg [3:0] num2=0;
	 reg [3:0] opr=0;
	 reg [1:0] count=0;
//in1 = in1;	
//out1=out1		
//  sevenseg=0;
always@(posedge clk)
begin
out1=1;
if(in1==8)
sevenseg=7;
if(in1==4)
sevenseg=4;
if(in1==2)
sevenseg=1;
if(in1==1)
 sevenseg=10;	//10=reset
out1=2;
if(in1==8)
sevenseg=8;
if(in1==4)
sevenseg=5;
if(in1==2)
sevenseg=2;
if(in1==1)
 sevenseg=0;
out1=4;
if(in1==8)
sevenseg=9;
if(in1==4)
sevenseg=6;
if(in1==2)
sevenseg=3; 	 		//missed '11'
if(in1==1)
 sevenseg=12;	//12='='
out1=8;
if(in1==8)
 sevenseg=13;	//13=/
if(in1==4)
 sevenseg=14; 	//14=*
if(in1==2)
  sevenseg=15;	//15=-
if(in1==1)
 sevenseg=16;	//16=+
end
always@(sevenseg)
begin
count=count+1;
end
always@ (sevenseg or count)
case(count)
2'd0: opr=12;
2'd1: num1=sevenseg;
2'd2: opr=sevenseg;
2'd3: num2=sevenseg;
default: opr=0;
endcase
//if(count==3)
//
endmodule

 

Hi ICOW,

can you please tell me about the kit or that programmer you are using for programming...

 

i am using spartan 3
x3cs400