Subject: Re: None
To: Geert Uytterhoeven <Geert.Uytterhoeven@CS.kuleuven.ac.be>
From: Joe Torre <firstname.lastname@example.org>
Date: 12/04/1995 17:18:03
On Mon, 4 Dec 1995, Geert Uytterhoeven wrote:
> Joe Torre wrote:
> > The Sun 3 has a 68020 CPU and 68451 MMU. Any Motorola 020 systems could be
> Wrong! Sun 3s with a '020 have a custom MMU built of many PALs (I took an
> extensive look at a broken Sun 3/280 motherboard some weeks ago), since
> Motorola wasn't ready with a good working MMU when Sun released the model 3.
OK I was totally wrong! A for effort to Sun for that PAL MMU thing!
I assumed ;) that "Motorola 020 systems" meant the proprietary Suns as well.
alas, as thousands of MAC-II systems had the jumpered MMU. Which Apple sold
MMUs to those needing them.
also the amiga 2620 (14mhz020/451 4meg ram) accellerator board for the A2500 ( runs
Amiga UNIX!) could be upgraded with the jumperplug and 030 adapter that
CSA sold (another model of which fit the MAC-II).
> Sun 3s with a '030 use of course the builtin MMU.
Thanx for the education!
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