Date   : Mon, 17 Jun 1991 14:29:40 EDT
From   : Mike Freeman <freeman@watsun.cc.columbia.edu>
Subject: Modified Telcon Zorba Questions

Around 1982-1984, a company known as AVOS, Inc. modified first the 
Osborne I and then the Telcon Zorba for screen-reading via speech 
synthesis for use by the blind. At one time, there was an AVOS Blind User's 
Group. I am certain it no longer exists since AVOS went under years ago. If 
any modified Zorba users (besides myself, of course) read this newsgroup, I've 
got questions for them:
(1) has anyone else encountered incorrect disk transfers with AVOS 
BACKUP program, written by Donald Krantz? I have encountered files with 
altered CRCs (from CRCK) in the middle of a transferred disk 
(specifically, M80.COM). My copies of BACKUP have a CRCK44 generated CRC 
of 886E. (I'm now using CFU from CPYFSTU.LBR plus SGEN/SYSGEN for the 
system).
(2) Does anyone have the source to AVOS' Zorba terminal program 
STERM.COM? I'd like to see how they did their comm I/O and I might be 
persuaded to upgrade it to handle XMODEM-CRC, XMODEM-1K and True Ymodem 
protocols.
BTW, I now have a modified BIOS that doesn't destroy the index registers 
X and Y.
Thanks in advance.
-- Mike Freeman K7UIJ --
P.S. CFU works fine.