RyDOOR IBM BIOS Redirector
--------------------------

RyDOOR (C) Copyright 1988, Gregory J. Ryan

Licence
=======
This software is being distributed using the ShareWare concept. This means
that if you find this software useful and valuable you should send the
requested registration fee to the author. If you decide not to use the
software simple remove it from your disk.

You may distribute this software free of charge to other bulletin boards but
you may not make a profit doing so.

To register this product please send $25 to :

Greg Ryan
4427 N. Morris Blvd.
Shorewood, WI 53211

Support
=======
I support my programs and am happy to do so. You may reach me on my support
BBS HomeBase in Shorewood, WI at 414-962-1097 or on EXEC-PC at (414)-964-5160.

If you desire a special RyDOOR for a particular application please write or
call.

Disclaimer
==========
This software has been tested thoroughly but all the risk of use is upon
the user. In no way will Gregory J. Ryan be held liable for any loss of
profit or any other commerical damage.

Introduction
============

RyDOOR is a utility to allow remote use of your computer via modem.

If you've ever tried running programs remotely by 'dropping to dos' you are
probably aware of the DOS command CTTY. This is a function that all DOS
input/output to be redirected to the com port and therefore your modem. The
limitations are severe however. You may only run programs that do ALL i/o thru
DOS. This means that all video and keyboard calls have to be exectuted thru
Interrupt $21. Slow! Slow! Slow! And you'll find many programs that just don't
do it!

RyDOOR does this one better. It grabs the video ($10) and keyboard interrupt
($16) and redirects thru the com port. If the video involves a 'move cursor'
command RyDOOR automatically translates the command into the ANSI equivilent.
This means that you must be using a communcations program (remotely) that
employs an ANSI terminal driver....not too difficult these days...Procomm,
qmodem and just about any respectable comm program will handle it.

READ THIS!
RyDOOR also grabs the timer interrupt and periodically checks to make
sure that carrier detect is high. If not the system will re-boot. This
means that you don't need to load watchdog or a similar program to check
for unintentional carrier drops. Because of this feature you must not try
to run this program locally!

RyDOOR may not work properly with some concurrent operating systems. My
advice is to get it working in DOS first and then changing over to a
concurrent system when you have RyDOOR working satisfactorily.

This is the version that can run a program from within it!

usage:

RYDOOR5 [2] [B:xxx] [T:yyy] F:filename.ext [filename parameters]

where items contained in square brackets are optional and without
the brackets.

The 2 indicates comm port 2 (comm port 1 is default)

The B: option allows you to specify a key that will escape RYDOOR
and the program in which you are working.

The T: option allows you to specify a key which will reboot the system
when pressed.

Only valid ascii characters are accepted and control characters are OK.
The xxx and yyy are the integer equivilent of the key you wish.

NOTE: The F: parameter (along with its' program parameters) MUST be the
last parameter on the line!!

examples

RYDOOR5 B:3 T:20 F:\command.com

This will run command.com thru RYDOOR. All programs that you load from the
DOS prompt will use RyDOOR for redirection.

it will abort the program by pressing ^C
it will re-boot computer by pressing ^T or dropping carrier

RYDOOR5 B:3 T:20 F:ued.com /b

this will run the ued utility via bios calls...

it will abort the program by pressing ^C
it will re-boot computer by pressing ^T or dropping carrier