When using iMPACT to verify the ST Micro SPI device, M25P65 failure can occur at address 0. The following will be displayed.
'1': Reading device contents...
Failed at address, 0
'1': Verification Terminated
PROGRESS_END - End Operation.
Elapsed time = 3 sec.
The contents of the PROM have been programmed, and the device can successfully program the Virtex-5. The problem is in the way iMPACT is operating on the device.
This problem has been fixed in the latest 9.1i Service Pack available at:
The first service pack containing the fix is 9.1i Service Pack 2.