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Article #40789

Re: Was - Re: Xerox sues Apple!!! Now processor wars.

#40789
From: Art Boyne
Date: Wed, 03 Jan 1990 16:21
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bds@lzaz.ATT.COM (Bruce Szablak) writes:

>More importantly, will my 68000 software run on a 68020, 68030, 68040 etc?
>Sometimes yes, sometimes no...

It should, with one *important* exception: exception handling.  The length and
contents of the stack frame created by an exception (bus/address errors,
interrupts, traps, etc.) changed between the 68000 and the 68010.  Any code
that handles 68000-style exception stack frames has to be modified to run
on a 68010 or later.

This would mean that any code that handles raw interrupts will not run
unchanged.

Art Boyne, boyne@hplvla.hp.com
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Message-ID: <360025@hplvli.HP.COM>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!hplabs!hpfcso!hplisa!hplvli!boyne
References: <899@lzaz.ATT.COM>

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From: boyne@hplvli.HP.COM (Art Boyne)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Was - Re: Xerox sues Apple!!! Now processor wars.
Message-ID: <360025@hplvli.HP.COM>
Date: 3 Jan 90 16:21:49 GMT
References: <899@lzaz.ATT.COM>
Organization: Loveland Inst. Div
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