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 Resources for Newbie Verilog and VHDL People 
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Joined: Wed May 15, 2019 1:17 am
Posts: 21
I only learned VHDL and Verilog in the past few years. As a newbie, I'd highly recommend these resources if you are starting out:

Dan is also heavily into formal verification of designs, and I'd also highly recommend that as well.

Hope you find these useful.

Mon May 20, 2019 2:23 am
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Joined: Fri Mar 22, 2019 8:03 am
Posts: 263
Location: Girona-Catalonia
Hi Warren,

Yes, that's helpful. Thanks for sharing


Mon May 20, 2019 1:37 pm

Joined: Wed Jan 09, 2013 6:54 pm
Posts: 1370
Thanks Warren!

I've been seeking a clear and useful Verilog tutorial for some time. (I think part of the problem is that we want to use Verilog as a hardware description language, but it's designed as a hardware modelling language. I think we are best off, initially, if we just use well-tried patterns to express ourselves.)

Here are some links I've collected:

Sat May 25, 2019 4:44 pm

Joined: Tue Dec 11, 2012 8:03 am
Posts: 274
Location: California
I had a brief exposure to VHDL 20 years ago, but the project it was for got cancelled. I've never had any exposure to Verilog. How would you compare them, and under what circumstances, or for what applications, would you recommend one or the other?

_________________ lots of 6502 resources

Sun May 26, 2019 1:13 am
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Joined: Wed May 15, 2019 1:17 am
Posts: 21
I'm still too new to both languages to give you a good comparison between them. I like Verilog more as it's got a C-like syntax and I'm used to that. Also, there's a lot of open source support for Verilog with tools like Icarus, Verilator and yosys.

Sun May 26, 2019 2:42 am

Joined: Wed Jan 09, 2013 6:54 pm
Posts: 1370
Verilog is the Fortran to VHDL's Algol. Verilog is more scrappy and has obscure corners, but stick to a simple coding style and you're more productive. Verilog is a C to VHDL's Java. In VHDL there's more internal consistency checking - it's a typed language - and more verbosity. You can probably get the last bug out of a complex VHDL design more rapidly than a complex Verilog design. All my professional experience was with teams working in Verilog, mostly making CPUs and SoCs. For products in telephony and consumer electronics, you'll see Verilog used. For aerospace, maybe, you'll see VHDL.

For progress to the 99% correct, Verilog will win. For progress to 100%, VHDL will win. (This isn't true, but it might be useful!)

Sun May 26, 2019 6:59 am

Joined: Tue Dec 18, 2018 11:25 am
Posts: 19
Location: Hampshire, UK.
I’m still deliberating over whether to get a FPGA development kit, and wondered if this book is any good:-

This book is unique in its side-by-side presentation of Verilog and VHDL, enabling the reader to quickly compare and contrast the two languages.

Tue Jan 14, 2020 7:39 pm

Joined: Wed Jan 09, 2013 6:54 pm
Posts: 1370
Looks like there's lot of good stuff in there. I see it goes bottom up so you get to learn about transistors first. Well, before that you do some binary and some logic. If you look at the side-by-sides on pages 445 and following you'll see how VHDL is much more verbose than Verilog. (For some people and some purposes that might be an advantage.)

Tue Jan 14, 2020 7:52 pm
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Joined: Fri Mar 22, 2019 8:03 am
Posts: 263
Location: Girona-Catalonia
Hi B.Bibby,

I purchased this book some time ago (I didn't know it could be downloaded for free as a pdf file (?)) and based on my knowledge it is an excellent book. It covers digital logic and digital systems starting from the very basics until it eventually enters into hardware description languages and microprocessor design. It is very well written, easy to read, with an incremental approach to newly introduced concepts, and plenty of useful diagrams, examples and exercise proposals. Hardware Description Languages are covered to a rather comprehensive level, including the implementation code of a pipelined MIPS processor, but it is not a specific book about them. If you are already familiar with digital logic design, have all the required concepts consolidated, and you search for a book for teaching you Verilog or VHDL, I suppose there may be other books more focused on that particular subject. Said that, this book is still very good for what it covers which is exactly what its title implies.

Last edited by joanlluch on Tue Jan 14, 2020 10:11 pm, edited 1 time in total.

Tue Jan 14, 2020 8:47 pm

Joined: Mon Oct 07, 2019 2:41 am
Posts: 64
I have a DE1 board, so can use Altera's AHDL rather what I feel both are poorly defined
languages. There seem to be better hardware design languages, but they never made it out
the lab. I too am looking for notes on the verlog and vhdl, as I find them too verbose,
and confusing in the sense where is the prototype and where do you find what the logic is generating
as real gates.

Tue Jan 14, 2020 9:35 pm
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