Re: Gemini on old STs

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Article #41787

#41787

From: David Clear
Date: Sat, 10 Mar 1990 17:54

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In article <9003091143.AA07771@freya.math.dmswwu> ONM07@DMSWWU1A.BITNET (Julian Reschke) writes:
[about why Gemini won't work with TOS < 1.2]
>
>That's because GEMINI uses the BIOS character I/O vectors that were
>introduced in TOS 1.2...

If some code was written to replace TRAP #13 (BIOS) with something that checked
for character I/O function numbers and, if found, jumped through these new
vectors (the vectors would, of course, initially point to the BIOS routines
(or other routines which then called the BIOS)), would this allow GEMINI to
work or is there more to it than that?

Also, if this idea is possible, notes on how these new vectors work would be
appreciated.

Maybe I'm grossly oversimplifying things...

Dave.

-- 
% cc life.c                      | David Clear <dac@ukc.ac.uk>
% a.out                          | Computer Science, University of Kent,
Segmentation fault (core dumped) | Canterbury, England.

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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!mcsun!ukc!harrier.ukc.ac.uk!gos.ukc.ac.uk!dac
From: dac@ukc.ac.uk (David Clear)
Newsgroups: comp.sys.atari.st
Subject: Re:  Gemini on old STs
Message-ID: <2880@gos.ukc.ac.uk>
Date: 10 Mar 90 17:54:58 GMT
References: <9003091143.AA07771@freya.math.dmswwu>
Reply-To: dac@ukc.ac.uk (David Clear)
Organization: Computing Lab, University of Kent at Canterbury, UK.
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