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From: lbl@druhi.UUCP (LocklearLB)
Newsgroups: net.micro.atari
Subject: Re: accessing CPM/68K on the 520ST
Message-ID: <137@druhi.UUCP>
Date: Thu, 20-Feb-86 11:32:57 EST
Article-I.D.: druhi.137
Posted: Thu Feb 20 11:32:57 1986
Date-Received: Fri, 21-Feb-86 06:19:20 EST
References: <8602181908.AA07989@mitre-bedford.ARPA>
Organization: AT&T Information System Labs, Denver, Co
Lines: 26
Summary: the 520 does not run CPM/68K

In article <8602181908.AA07989@mitre-bedford.ARPA>, jhs@MITRE-BEDFORD.ARPA writes:
> Have any of you hackers out there figured out how to access CPM/68K without
> buying the $300 "developers' kit"?  According to COMPUTE! Magazine, the
> GEM desktop is "really" built on top of CPM and can be "peeled away" if you
> know how.  It seems that getting rid of GEM should cost negative, not positive
> dollars!  Has anybody figured out how to do this?
> 
> 						-John Sangster
> 						jhs at mitre-bedford.arpa

If COMPUTE! said that the 520ST uses CPM/68K, then they are just plain wrong.
The underlying operating system for the ST is GEMDOS, which has functionality
similar to MSDOS.  Access to GEMDOS is done by merely doing gemdos() calls
with the appropriate parameters.  Thats all it takes.  Of course, the 
compiler or interpreter that you are using must provide the bindings for
these calls, but that is another matter.

By the way, you never "get rid" of GEM in the sense that the code for it
becomes non-resident (especially since it is now in the ROMs!), you can
only by-pass it.

Barry Locklear
AT&T Information Systems Labs 
Denver, CO
(303) 538-4954
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