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From: brad@ut-sally.UUCP (blumenthal @ home with the armadillos)
Newsgroups: comp.sys.mac
Subject: Re: A Rather dumb question...
Message-ID: <9562@ut-sally.UUCP>
Date: Tue, 10-Nov-87 02:26:17 EST
Article-I.D.: ut-sally.9562
Posted: Tue Nov 10 02:26:17 1987
Date-Received: Thu, 12-Nov-87 04:54:55 EST
References: <1939@crash.CTS.COM> <1720@cognos.UUCP>
Reply-To: brad@ut-sally.UUCP (blumenthal @ home with the armadillos)
Organization: U. Texas CS Dept., Austin, Texas
Lines: 26


>In article <1939@crash.CTS.COM> maddie@pnet01.UUCP writes:
>
>>  Anyone out there know what the maximum Hard-Disk size is on the Mac before

In article <1720@cognos.UUCP> roberts@cognos.UUCP (Robert Stanley) writes:
>24-bit architecture, at least with respect to operating system stuff.  So
>saying, the lower limit would be 2^^24, or 16 meg, but we can readily see that
>
>So saying, chances are good that a 32-bit field controls the number in
>question, which gives 4G (unsigned) or 2G (signed).  I know, who would ever
>
>Now, we are all agog to hear *why* you need to know.

Heck, I'm a lisp hacker.  I can think of ways of using a few gig of
VM, not to mention a few gig of file space for my knowledge base :-).

As long as we're going off into the wild blue yonder, I have a
question.  Isn't 2^n (where n is 24 or 32) just the number of
addresses?  HD's aren't usually byte addressable are they?  more like
512 bytes/address?  So this gives from 8 gig to about 2 terabytes (had
to look that prefix up in my CRC) of addressable storage.  When
Jasmine comes out with one for under 2K, I'll buy it :-)

Take care,
brad