Hi all,
I am trying to simulate in Modelsim a xilinx video IP core (AXI to XVSI)
using a do file (AXI_VidOut.do) and when I force the input video data
using
force s_axis_video_tdata -deposit 16#0 20, 16#AABBCC 40, 16#AAAACC
60
I found in the wave editor that s_axis_video_tdata was stuck to value
16#AAAACC from 0 ns to the end of the simulation without changing
I attached the files to test if possible
Thanks
Karim
Karim, I can't open you're RAR file so I'll have to guess, but there are two immediate possibilities: 1) What is your `timescale? You haven't specified "ns" in your force command time specifications so it's possible the force is being applied after 60ps, which you might not notice in your waveform. 2) Is there something else applying values to s_axis_video_tdata? force -deposit only forces the value until something else drives a different value on to the net. Hope that helps, Tom
Thanks Tom it was as u said about the timescale actually before when I did simulations, I specified only the run duration and the clk in ns and it works but it seems that this time the default configurations had been modified and I got that strange behavior Karim