Article View: comp.sys.atari.st
Article #23650Re: RAM resident utilities, TRAPs from TRAPs
From: Landon Dyer
Date: Tue, 11 Nov 1986 21:24
Date: Tue, 11 Nov 1986 21:24
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> In the current ROM TOS version of the Alt-Help screen dump,
> the UA stored at $502 is called to actually do the screen dump. You
> may install your own UA there. But the exception handler saves
> all registers except A7 (15 registers) on the stack, then calls a
> subroutine which in turn calls ($502) as a subroutine. What it all
> adds up to is that the needed check is now:
>
> BTST #5,68(A7)
>
> Any comments/suggestions would be appreciated.
Yes. Don't do it.
--
-Landon Dyer, Atari Corp. {sun,lll-lcc,imagen}!atari!dyer
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arc1-ca.pugleaf.net!utzoo!mnetor!seismo!lll-crg!mordor!sri-spam!sri-unix!hplabs!pyramid!decwrl!sun!imagen!atari!dyerReferences:
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!lll-crg!mordor!sri-spam!sri-unix!hplabs!pyramid!decwrl!sun!imagen!atari!dyer From: dyer@atari.UUcp (Landon Dyer) Newsgroups: comp.sys.atari.st Subject: Re: RAM resident utilities, TRAPs from TRAPs Message-ID: <459@atari.UUcp> Date: Tue, 11-Nov-86 16:24:47 EST Article-I.D.: atari.459 Posted: Tue Nov 11 16:24:47 1986 Date-Received: Wed, 12-Nov-86 21:13:55 EST References: <1457@batcomputer.tn.cornell.edu> Organization: Atari Corp., Sunnyvale CA Lines: 22