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AR# 6545

*Obsolete* 3.1i Hardware Debugger - PROG toggled

Description

Keywords: Hardware Debugger, Parallel, Cable, PROG, DLC5, losing configuration, program, download

Urgency: Standard

General Description:
When programming an FPGA in Hardware Debugger in 3.1i, 2.1i, or 1.5i through the parallel port, the program pin goes low after configuration, thus erasing the FPGA.

Solution

1

This problem can be fixed by setting the following environment variable:

SET XIL_HWD_PCAB_FIX=1

Environment variables can be set in the "autoexec.bat" file for Windows95/98. The exact line above can be added to the file using the "sysedit" program.

In WindowsNT, right-click on the "My Computer" desktop icon, go to Properties, and select the Environment tab. The variable is "XIL_HWD_PCAB_FIX", Value is "1".

Reboot the PC.

2

Disconnect the parallel cable after configuration. This has worked when the program pin errors several minutes after configuration is completed.
AR# 6545
Date Created 08/31/2007
Last Updated 09/22/2005
Status Archive
Type ??????