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Altera_Forum's avatar
Altera_Forum
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11 years ago

Pin "x" is stuck at GND

This should be really simple. I'm new at this. Why do I get a compile message, "output stuck at ground"? I just want to generate a stretched pulse when I get a nWR low edge. module Extend...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

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Time delays (#) are not synthesisable. The last assignment is 0, hence stuck at ground. If you want a stretch pulse, you need to use a counter.

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Thanks! Will search/post separately asking for leads on good basic info, like what is sythesizable. Am interested in good starting points - I'm an EE with lots of embedded experience and just starting FPGA. Amazed at how little good practical instruction there is online.