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.
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Ruby-VPI 21.0.0
This release adds support for Ruby 1.9.0 and, in an awesome
twist of fate, breaks compatibility[1] with Cadence NC-Sim
while restoring compatibility with Mentor Modelsim.
1 Caution
Cadence NC-Sim is not compatible with this release.
2 Improvements
• Added support for Ruby 1.9.0 by replacing the
pthreads-based relay implementation with a simpler that
uses rb_create_thread() for stack decoupling and Ruby’s
thread-safe Queue class for synchronization. See this[2]
blog entry for details about the implementation.
One side benefit of this change is that it restored
support for Mentor Modelsim. On the other hand, it also
broke support[1] for Cadence NC-Sim, as mentioned above.
• The POSIX threads library (pthreads) is no longer
required by Ruby-VPI.
3 Repairs
The pipelined ALU example (one of my homework assignments
which motivated the creation of Ruby-VPI) has been removed
because it was buggy. Farewell, old friend!
[1] http://ruby-vpi.rubyforge.org/#problem.ncsim
[2]
http://snk.rubyforge.org/web/2008-03-31-ruby-1-9-support-c-extension-breakthrough.html
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