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Altera_Forum
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17 years ago

error message: "can't verify device number 1"

Hi, I am the newest member here. I am getting an error message "can't verify device number 1". The device is EPM1270T144C5. It was programing OK for a while, then the error came up. M...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

I see two possible causes:

1. The device is actually defective (or number of programming cycles has been considerably excceded)

2. The programming circuit or device power supply are not confirming to specifications, so only some device accesses are succesful by chance.