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AR# 16543

7.1i XST - XST is not recognizing the "-use_carry_chain" switch in my script file

Description

Keywords: VHDL, Verilog, directive, attribute

Urgency: Standard

General Description:
XST does not recognize the "-use_carry_chain" switch as described in the Constraints Guide.

Solution

This is an error in the Constraints Guide. You can only use the "use_carry_chain" directive in VHDL, Verilog, or XCF.
AR# 16543
Date Created 01/21/2003
Last Updated 10/20/2005
Status Archive
Type General Article