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AR# 3311

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


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.


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