Answers Database
2.1i: FPGA Editor: ERROR:FPGAEditor:285 - Cannot alter a global period constraint via a new attribute.
Record #6416
Product Family: Software
Product Line: Merged Core
Product Part: FPGA Editor
Problem Title:
2.1i: FPGA Editor: ERROR:FPGAEditor:285 - Cannot alter a global period constraint via a new
attribute.
Problem Description:
Urgency: Standard
General Description:
When adding a Physical Constraint to a net, under Attrib, and
put a max delay and then select Apply, after applying a global
period constraint to the design, the follwoing error occurs:
ERROR:FPGAEditor:285 - Cannot alter a global period
constraint via a new attribute.
Solution 1:
The error can be ignored, since the constraint does get
defined for the net. Normally, in the absense of the a
global constraint this would not cause any problem.
But since there is a global constraint, an error is issued.
A Workaround is to ignore the error or use the command
line in the GUI to apply the same constraint. An example
of the GUI command line:
setattr net FASTCLK period 12:high:6
The syntax is as follows:
setattr net net_name period <period_value>
[:<low|high>:<duration>][:<tsid>:<phase>:<factor>]
End of Record #6416 - Last Modified: 06/29/99 14:42 |
