UCF file for virtex 5

[dhoomketu]

Hello,

I have synthesized my design and now i want to write ucf file but i don't know how to assign proper pin number to make UCF file.

Thanx in advance

 

[JohnDuq]

If you are using Xilinx ISE the UCF file is defined in the Processes window

- User Constraints
-- Assign Package Pins

This opens up Xilinx PACE where it lets you define the pinout. After you run this the first time minor pinout changes can be made directly in the .UCF file.