What's New

Minor update for new iOS.

App Description

A quick reference manual for the two most popular Hardware Description Languages (HDL): VHDL and Verilog. This app is written by engineers, for engineers. For every construct in VHDL, provides the equivalent in Verilog, and vice-versa. Experienced custom digital logic designer for FPGA or ASIC? Electrical engineering student just learning the ropes? This app is for you.

+ Searchable dictionary of every keyword, operator, and data type for both languages.

+ Handbook provides simple example for every single reference

+ Common functions in each language

+ All pre-defined attributes for VHDL

+ All primitive gates and drive strengths for Verilog

+ Filter by language (VHDL, Verilog, or both)

+ Filter by language elements (keywords, operators, attributes, data types, etc.)

iPhone Screenshots

(click to enlarge)

VHDL Ref screenshot 1 VHDL Ref screenshot 2 VHDL Ref screenshot 3 VHDL Ref screenshot 4 VHDL Ref screenshot 5

iPad Screenshots

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VHDL Ref screenshot 6 VHDL Ref screenshot 7 VHDL Ref screenshot 8 VHDL Ref screenshot 9 VHDL Ref screenshot 10

App Changes

  • October 26, 2012 New version 1.1
  • February 26, 2013 New version 1.2
  • September 16, 2013 New version 1.3
  • October 03, 2014 New version 1.4
  • January 02, 2015 Price increase: $1.99 -> $3.99
  • April 22, 2015 Price decrease: $3.99 -> $2.99
  • September 16, 2015 Price decrease: $2.99 -> $1.99
  • September 04, 2019 New version 1.5
  • September 04, 2019 Price increase: $1.99 -> $2.99
  • September 27, 2019 New version 1.6
  • July 14, 2020 New version 2.0
  • September 16, 2023 New version 2.1

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