Date   : Tue, 14 Oct 1986 19:16:24 pdt
From   : swillett@amber.berkeley.edu
Subject: Re: Turbo Pascal I/O

Perhaps I have an idea what is wrong.  Turbo uses BIOS calls for I/O instead 
of BDOS calls, thereby bypassing the waiting SUBMIT input.  You can change this
by writing your own procedure using Turbo's BDos procedure and changing the
appropriate pointer (probably ConInPtr) to point to your procedure.  This may
be done, I THINK, by using something like ConInPtr := ptr(addr(yourproc)).
Read the Turbo 3.0 manual section on I/O drivers on page 272.  All of this
comes to me because I once saw an example somewhere but oculd not put my
finger on it
Try  playing around.