Re: [myhdl-list] delta cycles

[Thomas H. <th...@ct...>]

>>> When this counter is simulated, count changes a delta cycle after
>>> the positive clock edge.  When traceSignals is used to write a VCD file,
>>> gtkwave shows that the count changes exactly at the same time as the
>>> clock edge.  This is confusing (at least in more complicated cases) in
>>> the timing diagram.
>>

> But then I decided to poke around GTKwave.  And it looks like you can
> use the "time warp" feature to do this.  I simply selected a signal
> (clk) and the used the "Edit->Time Warp->Warp Marked" and then typed in
> "-1 ns" and the clk signal was shifted to the left 1ns.
>
> To make this useful you need to change the "delay" in the clock to
> something of significant value (depending how much you want it skewed).
>    If you use delay(1) and time warp -1 ns you will shift by half a clock
> cycle.

Cool! Thanks for the hint.

Thomas