Release 2014.07 has been posted on the downloads pages. Its main target is interfacing with requirements tools. Added names to bins (via AddBins and AddCross). It is intended that the name match a requirement name. When using WriteBin or WriteCovHoles, if a bin name is set, it will print. For details, see Setting Bin Names in the Reporting Coverage section of the CoveragePkg Users Guide. Enhanced ... »
Over the summer I have been working on the next set of revisions for OSVVM. One of the new features allows a name to be specified for each bin. The name is specified in calls to AddBins and AddCross. If a name is present, calls to WriteBin will print it. One motivation for a bin name is to correlate a requirement with it being tested (PASSED) or not tested (FAILED). Hence the output of WriteBin is... »
Webinar Thursday June 26, 2014 OSVVM provides functional coverage and randomization utilities that layer on top of your transaction level modeling (tlm) based VHDL testbench. Using these you can create either basic Constrained Random tests or more advanced Intelligent Coverage based Random tests. This simplified approach allows you to utilize advanced randomization techniques when you need them an... »
OSVVM release 2014.01 is now available at OSVVM Downloads. Note that starting with this release, I have separated the examples from the release of the library. Message handling is now handled by separate package, MessagePkg. MessagePkg must be compiled before CoveragePkg. Suggested compile order: MessagePkg.vhd SortListPkg_int.vhd RandomBasePkg.vhd RandomPkg.vhd CoveragePkg.vhd What’s new in... »
In conjunction with FirstEDA, I taught the first two European sessions of our OSVVM and Transaction Level Modeling (TLM) focused Advanced VHDL Testbenches and Verification class. We had attendees from many of the major European System Companies who design and verify programmable devices (FPGAs). The skill level of the delegates was impressive and made teaching one of my favorite classes just that ... »
In a constrained random approach, different items can be selected more frequently by using randomization weights. Items with a higher randomization weight are selected more frequently. In Intelligent Coverage, the same effect can be achieved by using coverage goals. A coverage goal specifies how many times a value must land in a bin before the bin is considered covered. Each bin within the coverag... »
When writing functional coverage it is important to be able to capture all the details of a model. With item (aka point) coverage, both VHDL and SystemVerilog do a good job. However with cross coverage, if the model requires more than a simple Cartesian product, SystemVerilog falls short. OSVVM, on the other hand, offers a rich cross coverage capability. Post continues at SynthWorks OSVVM Blog »