User guide

21-98
OpenVera Native Testbench
and then receiving it back again, with the unsupported data items
unchanged.
Using Reference Verification Methodology with
OpenVera
VCS supports the use of Reference Verification Methodology (RVM)
for implementing testbenches as part of a scalable verification
architecture.
The syntax for using RVM with VCS is:
vcs -ntb_opts rvm [vcs_options]
For details on the use of RVM, see the Reference Verification
Methodology User Guide. Though the manual descriptions refer to
Vera, NTB uses a subset of the OpenVera language and all non-tool
specific descriptions apply to NTB.
Differences between use of NTB and Vera are:
• NTB does not require header files (.vrh) as described in the
Reference Verification Methodology User Guide chapter “Coding
and Compilation.”
• NTB parses all testbench files in a single compilation
• The VCS command line switch
-ntb_opts rvm must be used
with NTB.
Limitations
• The handshake configuration of notifier is not supported (since
there is no handshake for triggers/syncs in NTB).