In my bgn file (report file of the last step: genrate programming file) I got the followig warning:
WARNING:PhysDesignRules:781 - PULLDOWN on an active net. PULLDOWN of comp s_o/s_o is set but the tri state is not configured.
I have the following constaints in my ucf file:
NET s_o LOC = G5; #GPLED0 NET "s_o" PULLDOWN; NET "s_o" TIG; NET "s_o" SLEW = SLOW; NET "s_o" DRIVE = 2;
Can anybody help?
Mehdi
Your problem is in the source code, not your constraints. It's complaining that you don't ever tristate the signal, either because your equations don't have a tristate term or because that term has been optimised away.
but where is the problem? is this can influence the right behaviour of my design? Mehdi
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