Path: utzoo!attcan!sobmips!uunet!zephyr.ens.tek.com!tektronix!psueea!parsely!agora!billsey
From: billsey@agora.UUCP (Bill Seymour)
Newsgroups: comp.sys.amiga.tech
Subject: Re: maximum memory
Message-ID: <1695@agora.UUCP>
Date: 15 Nov 89 03:05:01 GMT
References: <3157@ccncsu.ColoState.EDU:
Organization: Advanced Solutions, Hillsboro, OR
Lines: 22

From article <3157@ccncsu.ColoState.EDU:, by conca@handel.cs.colostate.edu (michael vincen conca):
: 
: Page 2-1 of Motorola's 68000 Microprocessor User's Manual states that
: the 68000 can 'directly access 16 megabytes' of memory. What
: limits the Amiga to a max of 9 megs of memory? Is it the custom
: chips or some other element in the hardware?

	There are several areas in the memory map that can't be used for
expansion memory, or at least not now... The one meg right abouve chip
mem is reserved for future chip ram extensions, the area between A00000
and C00000 is set aside for I/O devices, as is D00000 and E00000. F00000
is mostly ROM space.

: -=*=--=*=--=*=--=*=--=*=--=*=--=*=--=*=--=*=--=*=--=*=--=*=--=*=--=*=--=*=-
: Mike Conca, Computer Science Dept.   *  conca@handel.cs.colostate.edu
: Colorado State University            *  conca@129.82.102.32                   
:                  'Back off man - I understand computers!'
-- 
     -Bill Seymour             ...tektronix!reed!percival!agora!billsey
                               ...tektronix!sequent.UUCP!calvin!billsey
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