Answers Database

M1 NGDBUILD: invalid NCF/UCF file entry value "~" detected on line ##.


Record #3513

Product Family:  Software

Product Line:  FPGA Implementation

Problem Title:
M1 NGDBUILD: invalid NCF/UCF file entry value "~" detected on line ##.


Problem Description:
Keywords: invert, ~, invalid, character, constraint, ucf,
	  parse, error.

Urgency: Standard

General description:
If a signal name is using a character other than A to Z,
a to z, or 0 to 9; ngdbuild will give the above parsing error
if the signal is constraint in UCF.


Solution 1:

Put the signal name between two double quotes, e.g.:
NET "~netname" TNM = tnmname;

Ngdbuild will let the netname between double quotes pass
the error checking above.



End of Record #3513