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 Readme for:  Utility » Shell » crc_tools.lzx

Crc_tools

Description: CRC tools
Download: crc_tools.lzx       (TIPS: Use the right click menu if your browser takes you back here all the time)
Size: 37kb
Version: 1.0
Date: 09 Jun 04
Author: Martin McKenzie (port)
Submitter: Martin McKenzie
Email: marty/cadtechnologies co uk
Homepage: http://www.cadtechnologies.co.uk
Category: utility/shell
License: Freeware
Distribute: yes
Min OS Version: 4.0
FileID: 39
 
Comments: 0
Snapshots: 0
Downloads: 257  (Current version)
257  (Accumulated)
Votes: 0 (0/0)  (30 days/7 days)

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 This archive contains OS4 PPC versions of the tools CRC2, CRCFast and
 CRCTab.
 Source code used for this build was obtained from Steffen Haeuser's
 WarpOS port "crcWOS" on Aminet.

 --
 Martin McKenzie
 email:  marty()cadtechnologies.co.uk
 web:    http://www.cadtechnologies.co.uk

***************************************************************************

 Cyclic Redundancy Check
---------------------------------------------------------

This archive includes the following three files:

 crc2.c          Computes crc by bit shifting
 crcfast.c       Computes crc by table lookup
 crctab.c        Computes tables used in crcfast.c
 crc.doc         This file

 The utilities crc2 and crcfast compute the cyclic redundancy checks
for both the crc-16 (used in arc files) and crc-ccitt (used in xmodem).
crcfast is faster than crc2.  These routines compute the crc's for a
given file as a means of checking data integrity.
 These routines compile without change under Turbo C.  All are
short and illustrate the basic principles of crc calculations.



CRC References:

 C Programmer's Guide to Serial Communications, J. Compbell,
 Howard W. Sams & Co.,(1987)

 The Great CRC Mystery, T. Ritter, Dr. Dobb's Journal,
 (February 1986)

 Byte-Wise CRC Calculations, A. Perez, Wismer, & Becker,
 IEEE Micro, (June 1983)

***************************************************************************






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