# \[ANN\] Ruby-VPI 12.0.0 **URL:** \ **Category:** Ruby\ **Created:** [December 8, 2006, 12:24am UTC](https://www.ruby-forum.com/t/ann-ruby-vpi-12-0-0/78710 "2006-12-08T00:24:01Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![snk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/d9b06d/32.png) [@snk](https://www.ruby-forum.com/u/snk)\ **Post date:** [December 8, 2006, 12:24am UTC](https://www.ruby-forum.com/t/ann-ruby-vpi-12-0-0/78710/1 "2006-12-08T00:24:01Z")
Ruby-VPI is a Ruby interface to Verilog VPI. It lets you create complex Verilog test benches easily and wholly in Ruby. Website: [http://ruby-vpi.rubyforge.org](http://ruby-vpi.rubyforge.org) Install: gem install ruby-vpi Version 12.0.0 (2006-12-07) Summary This release adds support for the test/spec library, fixes some bugs, and improves the user manual and generated tests. Notice • Icarus Verilog 0.8 has been demoted to a mostly acceptable status. • Generated Verilog benches no longer supply the -w option to the $ruby\_init task. • The ruby-vpi/runner\_proxy library now invokes test runners □ just before exiting. Thus, you can invoke tasks in the main Rakefile before the test runners are invoked. □ located within any directory that is a descendant of the current working directory. • The SIMULATOR\_ARGS parameter of generated runners has been renamed to SIMULATOR\_ARGUMENTS for clarity. • The automated test generator □ no longer displays the backup status indicator. □ now supplies a third argument to the MERGER command. □ no longer replaces existing files with newly generated content during the update action. Instead, it now writes the newly generated output to a .new file and then invokes the MERGER command. Detail • The Vpi::Handle class has two new methods: x! and z!, which set the handle’s logic value to unknown and high impedance respectively. • The tests for the simple up-counter example were randomly failing because the specifications were not asserting the design’s reset signal long enough. So the design was getting into weird states and behaving in a non-deterministic way. This problem has been fixed. • The user manual has been revised and some minor issues have been fixed. Test generation • The automated test generator accepts new command-line options: □ —test-unit □ —test-spec □ —tspec • The automated test generator was crashing when parsing module parameters of an input file which did not have any module parameters. This has been fixed. • Generated Verilog benches now contain simpler clock generation code. • Generated runners now contain □ a :setup task which is invoked before the simulator runs. It can be used to make preprations, such as converting Verilog header files into Ruby, for the simulation. □ better explanations to accomodate new users. • Specifications generated in the generic format no longer contain a class that is instantiated in the generated Ruby bench.