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1992-01-05
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PCREMOT2
Terry Lahman and Kevin Sims January 28, 1992 (Utilities)
Purpose: Allows the remote (home) PC to control the keyboard and
monitor the screen of the host (office) computer, via modems or a
null-modem cable. Only text-mode programs can be run on the host, but
two-way file-transfer capabilities are provided through a modified
version of ZCOPY.COM (Utilities, February 28, 1989). Includes a SETUP
program that stores all configuration parameters in PCREMOT2.COM.
Format: PCREMOT2 [/M] [/#] [/B#] [/D] [/S] [/N] [/U] [/?]
Remarks: Entered with default parameters, PCREMOT2 becomes an 8K
TSR on the host (controlled) computer, using COM 1, 1,200 bits per
second, no CGA desnowing, and a default password of "PC Magazine".
The /M parameter executes the program on the remote (home) machine,
and /# accepts values of 1 through 4 for the COM port assignment.
(If used, /3 or /4 must not share an interrupt with other devices.)
Baud rates are: /B1 (1,200); /B2 (2,400); /B4 (4,800); /B9 (9,600); or
/B19 (19,200 null modem only) bps. Used with a modem connection (the
remote unit prompts for and then dials the number), the host will
automatically reduce speed to match that of the remote machine.
The /D parameter should only be used if necessary to eliminate
snow on older CGA hosts, and the /S parameter displays an ASCII 2
character to indicate that PCREMOT2 is active. For null-modem cable
connections, the /N parameter must be specified on both machines, as
must a common /B# speed. The /U parameter uninstalls the TSR and the /?
provides a syntax help screen.
The SETUP program provides for permanent (updatable)
configuration of all parameters, change of password (up to 20
characters), entry of special modem-initialization strings (up to 30
characters), and change of the default Alt-key combinations. Alt-C
retransmits the host screen to overcome phone-line noise; Alt-S shells
the remote unit to DOS; Alt-X exits the program.
Alt-T initiates file transfers, which can only be done when the
host is displaying the DOS prompt and ZCOPY.COM is on its PATH. Full
prompts are provided for filename(s) (DOS wildcards are supported)
and for source and destination file paths. Files cannot be renamed
during transfer. Applications in graphics mode (including Windows) are
not supported. Previous PCREMOTE versions must be updated on both host
and remote machines.
A Sample Session with PCREMOT2
The following is a step-by-step guide to using PCREMOT2:
ON THE HOST COMPUTER:
Run SETUP, configure for host mode, and verify that the modem COM port
and baud rate are set correctly. Make sure you save the configuration
(SETUP option 14). The next time you run PCREMOT2 there will be no
need to reconfigure.
Verify that PCREMOT2 and ZCOPY are stored in a directory listed on the
host computer's PATH. (Type PATH to see the current PATH. If the directory
containing the two programs in not on your PATH, modify the PATH command
in your AUTOEXEC.BAT or move the programs to one of the directories on
the PATH.)
Execute PCREMOT2. The program will now be resident on the host.
If desired, the host monitor screen can be turned off to prevent
burn-in over long periods of inactivity.
ON THE REMOTE COMPUTER:
Run SETUP, configure for manned mode, and verify that the modem COM
port and baud rate are set correctly.
When prompted, enter the phone number of the office (host) computer.
After the modems connect, the host sends the "Enter password:" prompt
to the remote computer.
Enter the password. (The default is "PC Magazine".) Any data that now
appears on the host computer's screen will be displayed on the remote
screen, as well.
Now you should experiment with PCREMOT2. If you enter DIR, for example,
you'll find that scrolling appears a little strange at first.
Start a text application, such as a word processor or a utility
program.
With the application still active, press Alt-X and exit PCREMOT2. The
modems will hang up and the call will be terminated.
Execute PCREMOT2 and dial back into the host. The application will
still be on-screen, executing normally. (Thus, you can start a program
that has a long execution time, hang up the phone, and dial back later
to see whether the program has finished its task.)
Terminate the application or shell out from it so that you see the
host's DOS prompt on the remote screen. Press Alt-T and follow the
very explicit prompts to transfer a file or two between machines.
When you're finished, press Alt-X and exit PCREMOT2.