UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

cancel
Showing results for 
Search instead for 
Did you mean: 
Contributor
Contributor
3,378 Views
Registered: ‎03-06-2009

NGBuild Error

All,

 

Any clues as to what this error means? 

 

ERROR:NgdBuild:770 - OBUF 'CP1_OBUF' and OBUF 'CP2_OBUF' on net 'CP1_OBUF' are
   lined up in series. Buffers of the same direction cannot be placed in series.

 

-David 

 

0 Kudos
1 Reply
Xilinx Employee
Xilinx Employee
2,187 Views
Registered: ‎09-06-2012

Re: NGBuild Error

Hello,

 

These errors are issued because the submodule EDIF/NGC netlist contains IBUFs/OBUFs. XST also adds IBUFs and OBUFs to the top level, so that they are lined up or the pads are driving/being driven by non-buffer components.

 

To get rid of these errors, please go through the AR 34771. http://www.xilinx.com/support/answers/34771.htm.

 

Let me know if this helps.

--Venkat
0 Kudos