Path: utzoo!utgpu!watserv1!watmath!att!cbnewsj!mec
From: mec@cbnewsj.ATT.COM (michael.e.connick)
Newsgroups: comp.sys.laptops
Subject: Re: Portfolio to Mac Connection
Keywords: Mac, Atari, Portfolio, Data Transfer
Message-ID: <4217@cbnewsj.ATT.COM>
Date: 16 Mar 90 14:46:14 GMT
References: <2910@uwm.edu>
Reply-To: mec@cbnewsj.ATT.COM (michael.e.connick,mt,)
Distribution: na
Organization: AT&T Bell Laboratories
Lines: 20

In article <2910@uwm.edu> astieber@csd4.csd.uwm.edu (Anthony J Stieber) writes:
> 4. type "copy com1: xterm.com"
> 	This will copy everything from the COM1: port to the specified
> 	file.  You may have to set up the COM port with the MODE command.
> 	This type of thing will work best with a short, well shielded
> 	cable at slow speeds (300..1200bps).  If the program gets
> 	corrupted on it's way to the Portfolio it probably won't work
> 	and could cause your machine to crash.  One way to check for
> 	corruption is to download several copies and and byte compare
> 	them.  If they're identical the chances are they are all good.

Unfortunately this won't work. There are binary values contained in the
XTERM program that are equivalent to an ASCII CTRL-Z. As soon as the
copy command hits one, it will terminate due to reading what it
considers to be an end-of-file character. So you'll never be able to get
the entire program loaded onto the Portfolio using this technique.

-----------------------------------------------------
Michael Connick    mec@mtfmi.ATT.COM    201-957-3057
AT&T Bell Labs     MT 3F-113	        (Dept. 79151)