New ContributorWhat is QUARTUS_CREATED_GND? Can I get rid of it?
As part of a school project I was implementing a very large combinational logic circuit on a CycloneV (5CGXFC7C7F23C8). And printing the logic blocks that were instantiated using the command `get_nodes -type lcell` and I noticed that one of the LABCELLs was always used by "~QUARTUS_CREATED_GND~I".
I can't find what this is in any of the documentation or on any other questions online.
So, it's sparked my curiosity.
What is the QUARTUS_CREATED_GND? What does it do?
If it serves no purpose, is there a setting that removes it? Seems like it is just using up a LAB for no apparent reason.
Thank you!
Hi,
QUARTUS_CREATED_GND is an auto-generated ground pin/signal/port created by Quartus. You cannot modify this pin.
The point of this pin is for the tool to create a logic 0. It has to use a LUT with a LUT-mask such that it always generates a logic 0 and then routes this to where it is needed rather than using additional LUTs to create local 0s.
Regards,
Nurina
PS: If you find any comment from the community or Intel Support to be helpful, feel free to give Kudos.
