Answers Database

Foundation Simulator: Unknown outputs on XBLOX or VHDL design


Record #1903

Product Family:  Software

Product Line:  Aldec

Problem Title:
Foundation Simulator:  Unknown outputs on XBLOX or VHDL design


Problem Description:
Keywords: simulate unknown xblox vhdl
Urgency:  Standard

General Description:
During functional simulation the outputs of an XBLOX
component, or a VHDL macro containing inferred XBLOX
components, are unknown.


Solution 1:

This can happen if XBLOX is not being run prior to
simulation.  The Project Manager may not detect the need to
run an XBLOX update.  If this happens, the simulation netlist
will contain XBLOX components which are not simulatable.

To force an XBLOX update, delete the <design>.ALB and
<design>.ASX files, and run functional simulation again.



End of Record #1903