ID:176261 Can't pack node <name> and I/O cell <name> -- two distinct delay chain logic options on the combinational output port on I/O cell

CAUSE: You assigned two Input Delay from Pin to Internal Cells delay chain logic options to the combinational output port on specified I/O cell and assigned the Fast Input Register logic option to either the I/O cell or one of the logic cells fed by the I/O cell. An I/O cell that uses both delay chain settings cannot be packed with a register.

ACTION: If you don't want the Fitter to pack the nodes, no action is required. Otherwise, remove either the Fast Input Register logic option or the delay chain logic options from the I/O cell.