Ruby-VPI

Ruby-VPI is a Ruby interface to IEEE 1364-2005 Verilog VPI
and a platform for unit testing, rapid prototyping, and
systems integration of Verilog modules through Ruby. It
lets you create complex Verilog test benches easily and
wholly in Ruby.

             http://ruby-vpi.rubyforge.org

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Version 20.0.0

Contents

  ??? Caution
  ??? Improvements
  ??? Repairs

This release shifts focus from single-module unit testing
to a system-level testing approach by adding support for
testing multiple designs in a single session, improves the
Ruby interface to VPI, fixes several bugs, and updates the
documentation.

1  Caution

  ??? The way tests are loaded has been changed to shift
    focus from single-module unit testing to system level
    testing. See this discussion thread and its
    significance explained in the user guide.

  ??? The excessive & verbose aliases for testing & setting
    logic values introduced in the previous 19.0.0 release
    have been removed in favor or short and relevant method
    names following this pattern: /vpi[01XZHL][?!]/.
    Furthermore, single-character aliases /[tfxzhl]/ (t & f
    for 1 & 0) have been added for simplicity.

  ??? The test runner will now chdir (change the working
    directory) into same directory as the runner file
    before running a test.

  ??? The RubyVPI::SIMULATORS hash has been changed into an
    array.

  ??? The VPI::Handle#[] method now gives access to VPI
    properties (instead of child handles) by name or
    integer constant. To fill the void, the VPI::Handle#/
    method has been added to give access to child handles
    by relative path, and the VPI::Handle.to_a method has
    been added to give access to child handles by VPI type
    (name or integer constant).

2  Improvements

  ??? Upgraded and revised the website and user manual to
    make use of the Gerbil project and the new project
    organization.

  ??? The ruby-vpi executable now accepts a -v option to show
    the project version information.

  ??? ???t??? and ???f??? are now synonyms of 1 & 0 in method names
    for setting and testing the logic values of handles.

  ??? API documentation for dynamically generated methods is
    now present.

  ??? Ruby???s standard output and error streams are now copied
    into the simulator???s log file. This will help keep a
    record of failures (stack trace) in the log file for
    debugging.

  ??? In ./lib/ruby-vpi/rake.rb, the sh() method now prints
    args in array form before execution to help users
    readily see the ARGV being passed to the target
    program.

3  Repairs

  ??? Fixed several Ruby warnings in the edge detection
    logic.

  ??? There was an infinite loop during recursive rake clean/
    clobber.

  ??? String to integer conversion was incorrect when ???x??? or
    ???z??? present in a handle???s logic value.
-- 
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