GOF can read in VCD file and annotate the signals on the
schematic at the specified time. By pressing NEXT or PREVIOUS button, the time
moves to the next or previous simulation event which has value changes in the
signals listed on the schematic.
The annotation information has 0,1,x,z and the transitions between them.
The feature is very useful in 'x' tracing in gate level simulation.
Use Menu GofTrace->Options->'Annotate Schematic' to enable the feature
Click 'Goto time' button to just the time slot to the value specified in the
next entry.
Click "Goto Previous" to goto the previous simulation event at which one or
more signals on the schematic have value transitions.
Click "Goto Next" to goto the next simulation event.
To use this feature, VCD file should be loaded.
One example of command line to load VCD file to do schematic annotation is
