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AR# 18565

6.1i SP2 iMPACT - "ERROR: Unsupported XSVF command" occurs when I generate an XSVF file using playxsvf v4.11


General Description:

When I directly generate an "XSVF" file for a UMC 18V00 with iMPACT 6.1i SP2, and use playxsvf v4.11, the following error occurs:

"XSVF Player v4.11, Xilinx, Inc.

XSVF file = xsvfumc.xsvf

ERROR: Encountered unsupported command #22 (Unknown)

ERROR: Unsupported XSVF command

ERROR at XSVF command #7594

Execution Time = 127.812 seconds"


You can work around this problem by following these steps:

1. Use latest iMPACT to generate a "SVF" file.

2. Translate the "SVF" file to "XSVF" using the "svf2xsvf502.exe" translator.

This problem has been fixed in the latest 6.2i Service Pack available at:

The first service pack containing the fix is 6.2i Service Pack 3.

AR# 18565
Date Created 09/03/2007
Last Updated 12/15/2012
Status Active
Type General Article