Dec 132017
Memory resident serial and parallel port controller.
File CPORT.ZIP from The Programmer’s Corner in
Category Utilities for DOS and Windows Machines
Memory resident serial and parallel port controller.
File Name File Size Zip Size Zip Type
CPORT.COM 9216 3525 deflated
CPORT.DOC 3250 1628 deflated

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Contents of the CPORT.DOC file

CPORT Copyright 1985,1986 by Keith P. Graham
Version 2.00, March 11, 1985.

Press ALT-LEFT SHIFT-P to control I/O Port assignment
Use /? for instructions

CPORT is a memory resident port controller designed for installations with
a need to switch between 2 or more printers. Complete control can be
obtained by entering CPORT with no parameters and then pressing and holding
the Alt and the left shift keys and tapping the P key. This will bring up
a menu where you may change the default configuration of the PC. Options
include redirection of printer data to com ports, swapping of LPT1 and
LPT2, and initialization of com ports. (Note: although you may change the
com port initialization parameters, the port will not be initialized until
you press "Z" or enter the CPORT command again.). An additional option is
a delay which stops the machine about a half second every time the printer
prints a carriage return, and a few seconds more for a page eject. This is
for slow printers which can time out on page ejects. It is probably not
needed for most installations.

You may also include parameters after the CPORT command so that CPORT can
be included in AUTOEXEC.BAT files, etc. You can enter each of the
parameters separated by commas. The parameters must be in order and there
must be a comma for each parameter. If you leave a parameter out, the
current setting will not be changed. The parameters are:


Only one character is needed for each parameter, but more can be used to
increase readability. You can enter:

CPORT LPT1,COM2,4800,7,E,1 or:

CPORT 1,2,4,7,e,1 either will give the same results

The example above redirects lpt1 to com2 and initializes. If LPT# is left
out, no redirection will take place, but the com port will be initialized
-- com2 to 4800 baud, 7 data bits, even parity with 1 stop bit.

By using the "/" switch character you can change other options. Switches

N = change parity on comport but don't make resident
D = set delay for slow printers
S = swap printer ports
? = this screen

CPORT is a public domain program in that I do not require payment for it.
If, however, CPORT is used in a profit making environment, I would insist
on a small contribution for my time and effort the amout of ten dollars is

Contributions, comments and suggestions can be addressed to:

Germonds Road
West Nyack, NY 10994

I can not respond to questions or comments unless a stamped self addressed
envelope is included with your letter, and the program cannot be customized
(at least not for ten dollars).

[CPORT uses about 5K of RAM. It has no un-install capability to remove it
from memory once resident, but that can be accomplished by using Kim
Kokkonen's wonderful MARK and RELEASE programs, available on most BBS's in
TSRCOMxx.ARC, where xx is the current version number. Documentation
created by doing an ascii dump of the file and editing the
on-line help (.com files without docs make me nervous). Robert Blacher,
Sysop, Computer Connections PCBoard, Washington, D.C., 2400/1200, (202)
547-2008 public; (202) 547-7621 limited access.]

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