Hi KhaiY,
Thank you for your concern!
It seems that we meet agian, and you helped me with the topic "Ignored Buffers in Delay Line Design" before.
This is a continued version from that one and here I have attached the updated archieved project for your reference again.
After running "fitter" of the compile stage, a combinational circuit "delay_out" is found in resource editor at the location FF_X10_Y19_N17, whereas we expect to see a flip flop.
This is the most confusing part and I do not know why this happens. All location assignments are in the txt file of my previous attachment "Assignment_inconsistency".
Could you please help me with this?
Thank you!
Mingqiang