Search found 6 matches

by pra
May 6th, 2013, 1:45 pm
Forum: General
Topic: PWM Tutorial Question
Replies: 11
Views: 11060

Re: PWM Tutorial Question

A simulation will never reflect the actual electrical signals of the real world. What it allows you to do is verify that all the logic and timing factors involved in your design perform as desired, something that is impossible to do with the FPGA unless you have a license for ChipScope. The fact tha...
by pra
May 4th, 2013, 3:58 pm
Forum: General
Topic: PWM Tutorial Question
Replies: 11
Views: 11060

Re: PWM Tutorial Question

The following is a simulation with iSIm of Ethan's modification of the PWM verilog HDL. As I rekeyed it all, here is the code I ran: module pwm_ethan ( input clk, input rst, input [7 : 0] compare, output pwm ); reg pwmreg; reg [7 : 0] ctr; assign pwm = pwmreg; always @(posedge clk) begin if (rst) be...
by pra
May 4th, 2013, 8:02 am
Forum: General
Topic: PWM Tutorial Question
Replies: 11
Views: 11060

Re: PWM Tutorial Question

These are probably a very good pieces of HDL to run with the webpack simulator and observe the differences is signal timings under each. It should illustrate what MacAttak says!
by pra
March 27th, 2013, 3:38 pm
Forum: General
Topic: OpenCores Newletter
Replies: 0
Views: 2980

OpenCores Newletter

Here is a link to this month's OpenCores Newsletter

http://opencores.org/newsletter,2013,03
by pra
March 26th, 2013, 9:33 am
Forum: General
Topic: Verilog for Dummies
Replies: 5
Views: 7269

Re: Verilog for Dummies

A couple of things I really like about the book: 1. It has some useful designs that can become the basis for your own FPGA IP Core before you get into the more complicated stuff 2. It teaches you how to create and run simulations - essential for debugging all but the most trivial digital designs Pete
by pra
March 25th, 2013, 11:36 am
Forum: General
Topic: Verilog for Dummies
Replies: 5
Views: 7269

Re: Verilog for Dummies

I recommend "Verilog by Example", author Blaine C. Readler ISBN:978-0-9834973-0-1. Its available from Amazon and I found it about the most useful Verilog book I've read.