AR# 13347

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4.1i Virtex-II MAP - Use of the "-timing" option is corrupting the timing constraint unit

Description

Keywords: timespec, units, -timing, corrupt

Urgency: Standard

General Description:
It has been found that MAP will corrupt the value of any frequency-based timespec if it is defined in a unit other than picoseconds and the timing-driven map feature is being used.

Solution

1

This problem is fixed in the latest 4.1i Service Pack, available at:
http://support.xilinx.com/support/techsup/sw_updates.
The first service pack containing the fix is 4.1i Service Pack 3.

2

The work arounds are to either not use the timing driven map feature or to specify all frequency based timspecs in pico seconds.
AR# 13347
Date 08/20/2003
Status Archive
Type General Article
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