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AR# 12423

4.1i Virtex MAP - An incorrect MAP error occurs because of a GCLKIOB miscount.


Keywords: MapLib:94, GLKIOB, maximum, IBUFG, multiple

Urgency: Standard

General Description:
MAP miscounts the number of GCLKIOBs; the following incorrect error is issued:

ERROR:MapLib:94 - The design contains more than 4 GCLKIOBs. The maximum number of GCLKIOBs in this device is 4. Please correct the design.

This error occurs when IBUFGs have multiple loads (BUFG or CLKDLL), and they are incorrectly counted multiple times.


This problem is fixed in the latest 4.1i Service Pack, available at:
The first service pack containing the fix is 4.1i Service Pack 1.
AR# 12423
Date Created 08/28/2001
Last Updated 08/20/2003
Status Archive
Type General Article