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AR# 3311

M1.4 Map - Optimization of OFDT symbol results in dangling tri-state control pin

Description

In a case where OFDT has both data and tri-state control
pins grounded, map optimizes the OFDT down to a buffer
driven by GND. The tri-state control pin is incorrectly
left configured with no driver. This results in the following
drc error:

WARNING:x4kdr:82 - Blockcheck: The pin "T" on comp (mapped
physical logic cell)"SRAM1_ADD<16>" is configured to be used
but has no signal attached to it.

Solution

This issue is fixed by the latest M1.4 Core Tools patch
which is available in the XILINX Download Area:

Solaris: http://www.xilinx.com/txpatches/pub/swhelp/M1.4_alliance/core_sol17_m14.tar.Z
SunOS http://www.xilinx.com/txpatches/pub/swhelp/M1.4_alliance/core_sun17_m14.tar.Z
HPUX: http://www.xilinx.com/txpatches/pub/swhelp/M1.4_alliance/core_hp17_m14.tar.Z
Win95/NT: http://www.xilinx.com/txpatches/pub/swhelp/M1.4_alliance/core_nt17.zip
AR# 3311
Date Created 01/16/1998
Last Updated 04/03/2000
Status Archive
Type General Article