Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!osu-cis!killer!elg
From: elg@killer.Dallas.TX.US (Eric Green)
Newsgroups: comp.sys.amiga
Subject: Re: UNIX vs. Amiga speeds
Message-ID: <7732@killer.Dallas.TX.US>
Date: 2 Apr 89 03:28:52 GMT
References: <6411@cbmvax.UUCP>
Organization: The Unix(R) Connection, Dallas, Texas
Lines: 28

in article <6411@cbmvax.UUCP>, andy@cbmvax.UUCP (Andy Finkel) says:
> As I recall, the 68000 has a bit of trouble recovering from
> an address error.  (not enough state info saved). 
> This was fixed in the 68010.  (wasn't there a 68000 computer
> that used 2 68000s to get around this one ?)

The two 68000's trick was a common one. I believe that the original
Sun used it. I'm absolutely certain that the original Stratus
68000-based fault-tolerant system did it (a friend of a friend was
involved in that design). 

But that's really irrelevant as concerns recovering from an address
error. Recovering from an address error really makes sense only when
you have virtual memory. The Amiga doesn't have virtual memory. Ergo,
it doesn't make sense.

Since Exec and AmigaDOS have no resource-tracking facilities, there
isn't any good way to restore the system to a "clean" state after an
address error. The Guru really is the best way to handle it.  However,
I do very much hate the current GURU. If you're going to barf, at
least put a nice little alert up like GOMF, telling which task and
process was running when the system choked, and other relevent
information. I hear that this is going to be in 1.4, or at least some
future Amiga release... I'm glad.
--
|    // Eric Lee Green              P.O. Box 92191, Lafayette, LA 70509     |
|   //  ..!{ames,decwrl,mit-eddie,osu-cis}!killer!elg     (318)989-9849     |
| \X/            Amiga.  The homestation for the blessed of us.             |