>Does anyone know where I can find and old MS KB article Q101289 SYS(2007) Algorithm for Checksum? I checked on the MSDN online library, but could not find it.
>
Hi Stephen,

I found it on VS 97 MSDN Library CD:
--------------------------------------------------------------------------

The information in this article applies to:

SYS(2007) Algorithm for Checksum
Article ID: Q101289
Creation Date: 11-JUL-1993
Revision Date: 27-JUN-1995
Microsoft FoxPro for Windows, versions 2.5, 2.5a, and 2.5b
Microsoft FoxPro for MS-DOS, versions 2.0, 2.5, 2.5a, and 2.5b
Microsoft FoxPro for Macintosh, version 2.5b

The SYS(2007) function returns the checksum value of the character expression . The correct syntax is SYS(2007,). A checksum can be used to test the validity of data or to compare two character expressions.

NOTE: Checksum is a "byte-oriented CRC-16" algorithm. The exact logic was last published in the February 1986 edition of "Dr. Dobbs Journal."