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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
15 years ago

Hello, I encountered the same problem to you, the device I used is EPM240T100C3, I found that if the pin DEV_CLR wasnot set ZERO, the Quartus II would encount the error message "can't verify device number 1" when it worked about 56%. When I set the pin DEV_CLR to th Ground, the program was download successfully.

Hope this useful to you!