Article ID: 000085131 Content Type: Troubleshooting Last Reviewed: 09/11/2012
Why do I see a "Can't verify device number 1" error when I program the EPM1270 non-ES device in a multi-device JTAG chain with the Quartus II software version 4.2 SP1?
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Description EPM1270 non-ES device programming is only supported with Quartus II software version 5.0. The use of Quartus II 4.2 SP1 for EPM1270 non-ES device programming may result in an unrecoverable verify failure. Altera recommends only using Quartus II software version 5.0 and later to program EPM1270 non-ES devices.