AR# 3311: M1.4 Map - Optimization of OFDT symbol results in dangling tri-state control pin
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: