Answers Database

PPR 5.2.1: Possible Cause of PPR error 9016 if using Floorplanner


Record #1937

Product Family:  Software

Product Line:  FPGA Core

Problem Title:
PPR 5.2.1: Possible Cause of PPR error 9016 if using Floorplanner


Problem Description:
ERROR MESSAGE:

*** PPR: ERROR:

The following symbols of the set h_set cannot all fit into a single CLB block fo
r this device. Correct the following problem(s) for the symbols listed below.

*** PPR: ERROR 9016:

The set cannot be placed. The previously mentioned block(s) of the set should be
 closely examined.


Solution 1:

A possible cause of this rather generic message could be the use of the floorpla
nner to place a particular part of a design.

Example:

Placing a CC16CE counter macro within a 2X4 CLB matrix - with the BUFT16 macro t
hat the counter is driving to the left of it on the floorplan.	Writing/Saving t
his placement to a constraints file to run ppr -> reports ppr error 9016.

PPR has trouble routing the design as placed within the floorplan in the above e
xample - moving the BUFT16 to the right of the CC16CE counter removes the error.


By way of example, placement of your design within the floorplanner may be one p
otential source of this error message.




End of Record #1937