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Altera_Forum
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18 years ago

Quartus Can't scan device

I have a custom PCB with the altera epm7064s chip. The chip was programmed and the circuit worked but after a little while one of the capacitors used for a 555 timer blew. Since then the timer out...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

Hi Joe,

maybe it is possible for you to measure the TDI input and the TDO out of your Max device, when the programmer tries to scan the chain. When you couldn't see the data

coming out of TDO you should check the power supply.

Regards

Gerd