Answers Database
2.1i NGDAnno: NGDAnno leaves BlockRAM's inputs unconnected if they are driven by more than one power/ground or constant signals.
Record #6665
Product Family: Software
Product Line: FPGA Implementation
Product Part: NGDAnno
Product Version: 2.1i
Problem Title:
2.1i NGDAnno: NGDAnno leaves BlockRAM's inputs unconnected if they are driven by more than
one power/ground or constant signals.
Problem Description:
Urgency: standard
Problem Description:
If a BlockRAM is driven by more than one power (or ground) signal, or
more than one signal that simplifies to a constant during mapping, then
NGDAnno run with the NGM file may leave one or more of those inputs that were
tied to that power/ground net or the constant net unconnected in the simulation model.
This will likely result in X's appearing at the BlockRAM outputs
Solution 1:
The workaround is not use ngm file when running NGDAnno.
End of Record #6665 - Last Modified: 01/14/00 10:27 |
