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AR# 13461

*Obsolete* 4.1i iMPACT Spartan-II - Verify operation fails

Description

Keywords: iMPACT, verify, Spartan-II

Urgency: Standard

General Description:
When I attempt a verify operation on a programmed Spartan-II device with 4.1i iMPACT, the following error messages occur:

"'1': Verifying device...
ERROR:Bitstream:98 - There are 257 differences.
ERROR:iMPACT:395 - The number of difference is 257
'1': Verification terminated.
done.
'1': Programming terminated due to Errors.
PROGRESS_END - End Operation.
Elapsed time = 21 sec."

Solution

(PLEASE NOTE: This is the same problem discussed in (Xilinx Answer 9820) for 3.1i JTAG Programmer.)

The verify operation is not supported by 4.1i iMPACT for all Spartan-II ES (engineering samples) devices and some Spartan-II production devices. The Spartan-II Production devices that do not support Verify are those with manufacturing codes beginning with "AFP" (UMC fab, .25u process).

For more infomation see the following PCN
http://www.xilinx.com/bvdocs/notifications/pcn2001-08.pdf

To confirm that your configuration has completed successfully, monitor the status of the DONE pin.
AR# 13461
Date Created 01/03/2002
Last Updated 09/26/2005
Status Archive
Type General Article