Path: utzoo!attcan!sobmips!uunet!samsung!shadooby!mailrus!uwm.edu!uwvax!umn-d-ub!umn-cs!nis!ntmtka!steve
From: steve@ntmtka.mn.org (Steve Wahl)
Newsgroups: comp.sys.amiga.tech
Subject: Re: maximum memory
Summary: What about 32-bit processor memory space?
Message-ID: <1819@ntmtka.mn.org>
Date: 15 Nov 89 16:47:31 GMT
References: <3157@ccncsu.ColoState.EDU> <792@tardis.Tymnet.COM>
Reply-To: steve@ntmtka.mn.org (Steve Wahl)
Organization: Northern Telecom Inc., Minnetonka,MN
Lines: 22

O.K., I understand with the 16 Meg address space of the 68000 processor,
9 megs (or possibly 10 w/$C00000) of address space was reserved for RAM
in the Amiga.

However, the 68020 and 68030 have 32 bit address busses, not 24 as in the
68000.  That's 4 Gig, I believe.  I'm sure most of you know these facts,
I'm just stating them for those who don't.

Are there any restrictions in the Amiga OS for using the rest of this space
(well, probably just *some* of it :-) ) for RAM?  What address locations
are currently occupied by the 32-bit ram on the current 68020/030 processor
cards?

I guess I would have to call this academic questioning for now; my B2000 only
has the 1 Meg it came with at this point!  But I would like to know.

--> Steve
-- 
Steve Wahl
Northern Telecom, Inc.       (612) 932-8079
S-100, 9701 Data Park        steve@ntmtka.mn.org
Minnetonka, MN 55343         {rosevax,bungia}!ntmtka!steve