VHDL Ref

VHDL Ref

Reference for VHDL and Verilog

5 ratings
7 reviews
$2.99

Details

  • Released
  • Updated
  • February 10, 2011
  • February 9, 2026

Features

VHDL Ref screenshot #1 for iPhone
VHDL Ref screenshot #2 for iPhone
VHDL Ref screenshot #3 for iPhone
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About

This app serves as a quick reference for VHDL and Verilog, two popular Hardware Description Languages. It offers a searchable dictionary of keywords, operators, and data types, along with examples and common functions for each language. Designed for engineers and students, it facilitates cross-language comparison and filtering by language elements.

βœ“Searchable dictionary of keywords, operators, and data types
βœ“Examples for every reference construct
βœ“Common functions for VHDL and Verilog
βœ“Pre-defined attributes for VHDL
βœ“Primitive gates and drive strengths for Verilog
βœ“Filter by language (VHDL, Verilog, or both)
βœ“Filter by language elements
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What's New in VHDL Ref

3.1

February 9, 2026

+ Add SystemVerilog + More accurate cross-language equivlants + Fix bug with displaying reserved words that appear in both languages.

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This app dropped -6 positions in Reference chart.

Last updated on June 17, 2026.

User reviews

There’s no there there.

Minimal info in each definition. Examples not elaborated. Practically useless app. Very little real work put into this. Barely worth 3 cents, certainly not worth $3.

Good reference

It's a good reference guide, but as one if the previous reviewers said, when you scroll all the way down, the last 2 options are behind the filter bar. It prevents me from choosing them. Please fix this. I would have given the app 5 stars

Value

Pretty useless.

Want More....

I find this to be a very useful app. Works well for a reference for VHDL (Verilog too, but I've used that less).
I would like to see detailed examples, especially some examples converting between VHDL and Verilog. Also, maybe some test benches.

Learning Verilog

This looked like the best of the three I looked at. Good little reference for the keywords and operators. There is a problem with the list though. When scrolling all the way to the bottom there are four table items that are hidden behind the lower bar with the filter button on it. I can scroll them up and see them but cannot select them since the table snaps back down. iPhone 4S. Seems like it was made for the iPhone 5 screen. Please fix to auto screen size.
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Developer apps

FAQ

What is VHDL Ref?

VHDL Ref is a reference manual for the Hardware Description Languages VHDL and Verilog. It provides a searchable dictionary of language elements, examples, and common functions for both languages.

Who is VHDL Ref designed for?

VHDL Ref is designed for experienced custom digital logic designers working with FPGAs or ASICs, as well as electrical engineering students learning these languages.

What languages does VHDL Ref cover?

VHDL Ref covers VHDL and Verilog, including SystemVerilog. It offers cross-language comparisons for every construct.

Does VHDL Ref have ads?

No, VHDL Ref does not contain advertisements. It is a paid application with no ads.

What is the price of VHDL Ref?

VHDL Ref is available for a one-time purchase of $2.99.

On what devices can I use VHDL Ref?

VHDL Ref is supported on iPhone and iPad devices.

How often is VHDL Ref updated?

The latest version of VHDL Ref is 3.1, last updated on February 9, 2026. The app was initially released on February 10, 2011.

What is the user rating for VHDL Ref?

VHDL Ref has a rating of 3.2 stars based on 5 ratings.