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AR# 17467

6.1i MAP Virtex-II - MAP DRC should not allow RAM (or SRL16E) to be packed in same slice with FDRE

Description

Keywords: enable, conflict, FDRE

Urgency: Standard

General Description:
My design fails, and the source of the problem is an incorrect slice configuration where an SR input is configured to drive the WE of RAM and the Reset of the FDRE. This dual functionality is not actually supported in the hardware. MAP DRC should not allow this pack to occur. A similar conflict exists with SRL16Es.

Solution

This problem will be fixed in the 6.2i software release. In this release, MAP DRC will catch and prevent this pack from occurring.
AR# 17467
Date Created 06/18/2003
Last Updated 03/02/2006
Status Archive
Type General Article