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From: Cothrell@DOCKMASTER.ARPA
Newsgroups: comp.sys.atari.8bit
Subject: 1200xl and the cpu and OSe
Message-ID: <870907174221.284781@DOCKMASTER.ARPA>
Date: Mon, 7-Sep-87 13:42:00 EDT
Article-I.D.: DOCKMAST.870907174221.284781
Posted: Mon Sep  7 13:42:00 1987
Date-Received: Tue, 8-Sep-87 02:49:08 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 19

Ok, I have just found out that the 1200xl (and I presume everything else
but the 400 and 800) does NOT have a standard 6502 in it.  Can anyone
answere the questions of the day?  Namely, what was done to the
processor to make it non-standard?  I suspect that the boot vector (as
well as some others) have been changed from the standard 6502 vectors.
If you dont know for sure, but could tell me how to talk to somebody at
Atari...I would appreciate that greatly.  Otherwise, suggestions and
comments are welcome...results will be posted (if there are any).  The
second question concerns the OS source code.  Has the OS source been
published for the xl/xe machines (i have a 1200xl and a 130xe).  If it
has been published, who and where???  If not...does anyone have a
suggestion for writing an OS?  I want to use a regular 6502 in my 1200xl
and I think I will need to change the OS startup vectors (see question
number 1 above).  Better yet, are there any "alternate OS" available for
the ataris...and would any of the authors be willing to release the
source under a non-disclosure agreement or make a custom version?

please address replies to Cothrell -at DOCKMASTER.ARPA or to Info-Atari8
thanks...Scott Cothrell Cothrell -at DOCKMASTER.ARPA.