Date   : Wed, 15 Feb 1984 12:44:40-PST (Wed)
From   : decvax!genrad!rick@Ucb-Vax.ARPA
Subject: cpm 2.2 bios

       Has anyone every successfully modified their bios to handle xon/xoff
protocol for the console in a non-interrupt polled system.  This would 
probably require some sort of buffer arrangement, but characters would only
be noticed if some program or the ccp was polling the status port.  I am also
interested in handling a terminal (vt100) where the special function keys
send out three characters one after the other.  This is particularly nasty
when using them for an editor as characters are often lost.  right now, i
have my cns$ot routine sending out 10 nulls when it detects a line feed
so that the terminal has time to scroll. ( i have another terminal which
also requires this because of the xon/xoff problem).  I have an S-100
system built with assorted boards (including Ithaca Audio z80 board and Jade
Double D Disk Controller.  Am I going to have to add an interrupt controller
to resolve the above mentioned problems?  I forgot to mention that this is
for cp/m version 2.2

       I would very much appreciate any information that anyone has.
                               Thank you,

                               Rick Frerichs
               uucp:           decvax!genrad!rick
               tel:            617-779-2811 x6435