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AR# 13474

*Obsolete* 4.2i iMPACT PFF - The serial PROM loading direction is incorrect after the parallel PROM mode is used


Keywords: iMPACT, PROM File Formatter, PFF, parallel PROM

Urgency: Standard

General Description:
When the PROM File Formatter is used in iMPACT, the serial PROM loading direction will be incorrect if:

1. A parallel PROM file has been created in the same session;
2. The loading direction of the parallel PROM file has been set to "DOWN".


Please note that all Xilinx PROMs are serial PROMs -- you will only need a parallel PROM file for a third-party parallel PROM. Very few users will need to create both parallel and serial PROM files for the same project.

To work around this problem, exit and reopen iMPACT before creating a serial PROM file.

This problem is fixed in the latest 4.2i Service Pack, available at:
The first service pack containing the fix is 4.2i Service Pack 1.
AR# 13474
Date Created 01/04/2002
Last Updated 09/26/2005
Status Archive
Type General Article