Answers Database

PPR 5.0:Possible cause of 'Error 5805: Constraints to mapping symbol conflict'


Record #437

Problem Title:
PPR 5.0:Possible cause of 'Error 5805: Constraints to mapping symbol
conflict'



Problem Description:



Solution 1:




PROBLEM:  The following error can occur in cases where the F function
	  generator of a CLB is dis-allowed in a .cst file,  but the H
	  function generator is used and hand placed in the design.

*** PPR:  ERROR 5805:
	  Constraints assigned to   mapping symbol '$1I1442/$1I246
	  (type=HMAP, output signal=$1I1442/COD)(netlist LOC(s)=CLB_R8C3.H,
	  cstfile
	  LOC(s)=!CLB_R8C3.F+!CLB_R9C3.F+!CLB_R10C3.F+!CLB_R11C3.F+!CLB_R12C3
	  .F+!CLB_R13C3.F+!CLB_R14C3.F) are in conflict.



WORKAROUND:	There is no workaround other than removing the offending
		constraint.





End of Record #437