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Hi
Thanks for the reply which we will try.
When you say failure - do you mean physical failure or functional failure? The LEDs are driven by a simple latch circuit which does not operate at any great speed, nor does the FPGA do anything really 'clever'. There is a push button that clears the latch, so even if it was set by a timing issue the button should clear it. This button is one of the working features as it connects through the FPGA to a diagnostic LED which works OK.
Cheers
James
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I meant functional failure of its switch logic due to timing failure. If indeed it is a latch (unclocked) then that is not recommended and is better changed clocked logic s that it can be checked correctly by timing tool.
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