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CKCD version 1.1 September 14, 1989
CKCD
version 1.1
by
Scott Coleman
Xanadu Consulting
NAME:
ckcd
SYNOPSIS:
ckcd [1 | 2]
DESCRIPTION:
ckcd is a small utility for checking the status of the
carrier detect (CD) line of an IBM PC's serial port. ckcd
accepts an optional COM port number on the command line
(COM1: and COM2: are supported). If no port is specified,
COM1: is the default. ckcd prints a message to the screen
and then exits with a DOS ERRORLEVEL corresponding to the
state of the CD line. An ERRORLEVEL of 1 indicates the CD
line is high for the specified port; an ERRORLEVEL of 0
indicates the CD line is low.
A sample batch file illustrating the use of ckcd is
included.
MANIFEST:
CKCD.COM - The program itself
CKCD.C - Turbo C source code for ckcd
CKCD.DOC - This file (ckcd documentation)
CHECK.BAT - Sample batch file which uses ckcd
COPYRIGHT INFORMATION:
ckcd is made available under the sourceware concept. This
simply means that although the program is copyrighted, the
complete source code is distributed along with the
executable file. No fees are required for its use; all I ask
is that if you find ckcd useful, please send me email at one
of the addresses below with your comments, suggestions, or
just to say "hello".
Feel free to distribute ckcd to your friends, local
bulletin boards, users group library, even on line services
which charge their users exorbitant fees. A reasonable disk
duplication fee (<= $1.00) may be charged. If you improve,
fix, or otherwise modify ckcd, please send me a copy - I'd
like to see what you've done.
Copyright (C) 1989 Xanadu Consulting ALL RIGHTS RESERVED
CKCD version 1.1 September 14, 1989
WARRANTY INFORMATION:
Are you kidding? This software is distributed as-is with no
warranty, express or implied. It is hoped that this program
will be useful to some, but such usefulness is by no means
guaranteed. In no event shall I be liable to you for any
damages whatsoever, including, but not limited to, hardware
damage, software damage, lost profits, or any other
incidental or consequential damages arising from the use of
or inability to use this software.
HOW TO REACH ME:
I may be reached at one of the following addresses:
MaBell: 217/384-2127 (Xanadu BBS, 3/12/2400bps, 8N1)
FIDOnet: 1:233/69.0
Internet: coleman@f69.n233.z1.fidonet.org
Snail (U.S. Mail):
Scott Coleman
906 S. Goodwin
room 257A
Urbana IL 61801
Copyright (C) 1989 Xanadu Consulting ALL RIGHTS RESERVED