ncvhdl problem

[Metin Yerlikaya]

Hi,

i have the following problem & appreciate any hints on this.

i used ncverilog all the time before. There, it was possible to use
system tasks($recordvar) within the testbench to write out *trn & *dsn
files which you one can use later with signalscan for debugging signal
waveforms.

Now i have to use vhdl and ncvhdl. Is it true that above method is not
possible for vhdl testbenchs.
How can i generate *trn *dsn. files with vhdl. Whats the most straight
and sophisticated way to do this. I don't want to use nclaunch nor
interactive ncsim tcl shell. I want to run the ncsim and later if
needed check the waveforms.

Another question:

would it work if i write a verilog testbench and instantiate vhdl top
level and use verilog system tasks to generate waveform files? What
are the command line then to compile&elab and invoke the
simulator(ncsim) ?


many thanks!!
Metin

 

[Ajeetha]

Hi,
Use TCL in batch mode, you don't need to do it interactively, try the
following tcl file:

-- tcl file

database -open waves -shm -default
probe -shm -all -depth all top
run
exit
----

Use it with ncsim -input dump.tcl <other options>

HTH,
Ajeetha
http://www.noveldv.com
Metin Yerlikaya wrote:

Hi,

i have the following problem & appreciate any hints on this.

i used ncverilog all the time before. There, it was possible to use
system tasks($recordvar) within the testbench to write out *trn &
*dsn
files which you one can use later with signalscan for debugging
signal
waveforms.

Now i have to use vhdl and ncvhdl. Is it true that above method is
not
possible for vhdl testbenchs.
How can i generate *trn *dsn. files with vhdl. Whats the most
straight
and sophisticated way to do this. I don't want to use nclaunch nor
interactive ncsim tcl shell. I want to run the ncsim and later if
needed check the waveforms.

Another question:

would it work if i write a verilog testbench and instantiate vhdl top
level and use verilog system tasks to generate waveform files? What
are the command line then to compile&elab and invoke the
simulator(ncsim) ?


many thanks!!
Metin