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Internet Message Format
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1989-09-14
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2KB
From mcdphx!udc!uiucuxc!uunet!watmath!julian!UTOROCI.BITNET!ISCOVE Wed Sep 13 08:23:45 1989
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Date: Tue, 12 Sep 89 20:28 EST
From: <mcdphx!udc!uiucuxc!utoroci.bitnet!ISCOVE>
Subject: NoClick and 68881
To: uiucuxc!estinc!fnf
X-Original-To: fnf@estinc.uucp, ISCOVE
Message-Id: <0621635531@uwovax.uwo.ca>
Status: RO
Fred -
I sent version 3.5 of NoClick along to you on Sept 2, but have
no indication that it reached you. Maybe your connections to
bitnet are not very reliable, here's some other paths:
[private contact information deleted. -Fred]
In any case, although 3.5 worked with typical 68000 and 68020
setups, it made the wrong assumption about the task stack. I
posted this note to c.s.a. today:
Subj: NoClick / 68881
Version 3.5 handles the task stack incorrectly. I've now had time to
study Markus Wandel's Exec disassembly. The extra longword on the
Amiga task stack is used (in AddTask, Switch and Dispatch) to
store/restore the context of a 68881 if it is present. So NoClick has
to test and adjust only for the presence of a 68881 and not for a
68010/20/30 as 3.5 did.