Product Update Press Release, March 28, 2011
TestBencher Simplifies Random Transaction Generation
SynaptiCAD has released a new version of TestBencher Pro,
a VHDL and Verilog system-level testbench generation software that dramatically
simplifies the process of creating and applying random bus transactions to RTL
and gate-level models. The new version also simplfies creation of testbenches
that reside in a different compiled library from the design being tested.
TestBencher includes an updated version of SynaptiCAD's graphical HDL debugger,
BugHunter Pro, with new debugging features and improved support of ModelSim
and Incisive simulators on Windows and Linux platforms.
For more information on TestBencher Pro see the TestBencher Pro Graphical Test Bench Generation page.
Randomizes Data and Transaction Sequencing
The new version of TestBencher eliminates
many of the manual coding steps that were previously
required to create a testbench that applies a set of
weighted-random transactions with contrained-random input
data to a model under test. A fully randomized testbench
with uniform transactor weightings can now be created
without manually writing a single line of HDL code,
although the tool supports a mixed-approach of manual and
automatically-generated testbench code.
TestBench Generation Methodology
The user graphically draws timing diagrams
that represent the protocols for the testbench's
transactions with time and state variables to indicate
transaction input data. A transactor is generated for each
timing diagram and these transactors can be triggered by
function calls made by the user in a testbench
"transaction sequencer" process. The user can then
selectively insert these calls into the sequencer process
using a dialog that lists all available transactor
function calls along with buttons to control how the
transaction is applied. Using this dialog, transactions
can be applied sequentially or concurrently, transaction
can be scheduled on a queue for later execution, and the
input data to the transactions can either be directly
specified (via hard-coded values or pulled from a data
structure) or randomly generated.
After the user has finished generating
his testbench, he can launch his HDL simulator from inside
TestBencher using the contained BugHunter debugger to
begin applying transactions to his design model. As each
transactor executes, it captures the response from the
design model and compares the response against an expected
response. TestBencher supports both protocol checking and
scoreboarding of transaction payloads using graphical
constructs in the timing diagram to verify timing and
payload data, with captured data values being stored in
user-selected data structures (arrays, associative arrays,
data files, etc).
Pricing and Availability
TestBencher Pro is availiable now on all
major Windows and UNIX systems. Contact SynaptiCAD for
pricing on node-locked and floating versions.
For any questions concerning this press
release, please contact Donna Mitchell at 540-953-3390 or
email at [email protected] High-resolution images can be
downloaded directly from SynaptiCAD's web site at