General Description: After installing Service Pack 8 for 3.1i, JTAG Programmer returns the following error message when verifying an 18V00 PROM:
'(Device1)': Checking boundary-scan chain integrity...done. '(Device1)': Putting device in ISP mode ...done. '(Device1)': Verifying device.... Mismatch at Address: 0x0001 Mismatch at Address: 0x0003 Mismatch at Address: 0x0004 Mismatch at Address: 0x0005 Mismatch at Address: 0x0006 Mismatch at Address: 0x0007 Mismatch at Address: 0x0008 Mismatch at Address: 0x0009 Mismatch at Address: 0x000a Mismatch at Address: 0x000b Mismatch at Address: 0x000c ERROR:JTag - ..TOO MANY MISMATCHES...verification aborted. ERROR:JTag - !!! SPROM device configuration mismatches Mcs/Exo file !!! '(Device1)': Verification terminated due to errors.
NOTE: The patch that was previously available through this Answer Record has been superceded by the patch available in (Xilinx Answer 12836). Please download the patch available in Answer 12836 to resolve this problem.
A problem was introduced into 3.1is8 JTAG Programmer whereby correctly programmed 18V00 PROM devices may fail verification. A tactical patch is now available for this problem.
If the 18V00 Device continues to fail the verification procedure after the tactical patch is installed, then the error message is legitimate and may be due to a hardware problem.
This problem will not affect third-party device programmers or the WebPACK Device Programmer.