Answers Database

PRE-UNIFIED CARRY symbol: Not supported


Record #1476

Product Family:  Documentation

Product Line:  FPGA Core

Problem Title:
PRE-UNIFIED CARRY symbol:  Not supported


Problem Description:
The XC4000 "CARRY" primitive in the pre-Unified libraries was
never used in any library macros, nor was it supported by XACT.
Since it was a primitive, it was not documented in the XACT 4.x
Libraries Guide.

The CARRY symbol has since been removed from the XNF Spec and superseded by
CY4 and the various Carry Mode symbols


Solution 1:





End of Record #1476