I am trying to follow the Xilinx "Introduction to Programmable Logic". I try to implement in FPGA. But when I try to assign I/O pin in PACE's DOL. I found I can not assign Loc=P36. The drop-down list does not has the entry. I am using Webpack6.2i for Spartan 3.
Why?
Might be a power pin. Or a GCLK. Usually PACE is better spotting hardware issues than we are. What is your part number?
for Loc drop-down box, there sre T,L,R,TL,TR,BL,BR,RT,RB,LT,LB. What they mean?
T = top L = left R = right TL = top left TR = top right BL = bottom left ...
you get the idea.
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Rick "rickman" Collins
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