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AR# 4809

A1.5, A1.5i, Synopsys: New DesignWare libraries available on the FTP site to fix carry-in problem with add_sub component

Description

Keywords: Designware, XSI, Synopsys, Carry-chain, XDW, add_sub,
m15_dw_src.tar.gz, m15_9808_dw.tar.gz,
m15_9802_dw.tar.gz, m15_9708_dw.tar.gz

Urgency: Standard

General Description:

An error has been discovered in the A1.5 and 1.5i versions of the
Xilinx-Synopsys Interface Desigware libraries where a carry chain
does not get initialized properly for XC4000, XC5200 and Spartan
devices when a single ADD_SUB is inferred with an "a - b - 1"
construct.

Solution


Updated libraries have been uploaded to the FTP site in which fix
this problem.

The source file may be found at:

http://www.xilinx.com/txpatches/pub/swhelp/synopsys/m15_dw_src.tar.gz

Pre-compiled libraries can be found at:

1998.08:
http://www.xilinx.com/txpatches/pub/swhelp/synopsys/m15_9808_dw.tar.gz

1998.02:
http://www.xilinx.com/txpatches/pub/swhelp/synopsys/m15_9802_dw.tar.gz

1997.08:
http://www.xilinx.com/txpatches/pub/swhelp/synopsys/m15_9708_dw.tar.gz

Please read the README file in the downloaded file for installation
instructions.
AR# 4809
Date Created 10/13/1998
Last Updated 06/13/2002
Status Archive
Type General Article