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I am a rookie. I am working on my fourth MAX II design. I am using Quartus II Version 9 SP2.
The problem I am having is that several pins on EPM1270 do not work. For example. I have four test pins I use for debugging. If I connect the clock to all four of these pins (set up as outputs), the oscillator signal only comes out of one of the four test pins. (There are probably other pins that are not working, but I haven't found them yet.)
This seems like a Quartus problem to me. I would appreciate any advice. Especially, is there a file that I can delete that will ensure a complete re-build?
Thank you for any constructive suggestions.
John
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Hi John,
there a lot of possibilties why your design isn't working.
1. Your board or your MAX devcie is broken
Is it a new board or did you have run a design on it in the past ?
Can you assign your output to other pins ?
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2. Your design
Did you check that the clock is really connected to the outputs ?
Use the Quartus Tech View for checking.
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3. Quartus
Did you check your pin assignment ? Are the output assigned ??
One way to force Quartus to re-build the database is to delete the db folder.
Kind regards
GPK
Honored Contributor
