CPLD EPM570 outputs to VDD after programming

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Hello everybody,

I am running into a fairly strange phenomenon in which I try and

program a CPLD, and although I can see my debug pins in my top level

bdf file as being there, they are also shown in the .pin file, all pins are tied to VDD when I measure with an oscope after programming the device.

Thus my question - how can I verify the contents of my programming configuration (pof) file ? I have also delted it and regenerated, strange that

I can program the CPLD but not get outputs on my debug pins.

Thanks a bunch -

Eric

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Hi Eric,

look into the reports of your compile run. Did you get messages like pin xxxx stuck at VCC ?

Did you run simulation in order to make sure that your design behaves at intended ?

Kind regards

GPK