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From: dlugose@ecsvax.UUCP (Dan Dlugose)
Newsgroups: comp.sys.apple,comp.sys.mac
Subject: Re: Mac 512 upgrade with a 800k diskdrive
Keywords: Mac512k, and 800k diskdrive
Message-ID: <6880@ecsvax.UUCP>
Date: 25 Apr 89 14:03:14 GMT
References: <7934@phoenix.Princeton.EDU> <6921@bsu-cs.bsu.edu>
Reply-To: dlugose@ecsvax.uncecs.edu.UUCP (Dan Dlugose)
Followup-To: comp.sys.apple
Organization: UNC Educational Computing Service
Lines: 17

In article <7934@phoenix.Princeton.EDU>, hcfu@taiwan.Princeton.EDU (Hsin Chia F:
> I have a very old Mac128k, and I upgraded it to 512k by adding some RAM chips.
> Recently, I plan to add an Cutting Edge 800k drive to my system.

> For example, some one told me the ROM chips (which is 64k), need
> to be changed to 128k in order to include the 800k drive.

They are right: you need to upgrade to the newer ROMs in order to use the
800k disk drive.

WRONG!  A 512 unenhanced can use a 800k drive if it has the file HD20
in its System Folder.  Look for this file on old system floppies, esp.
for releases of software.  I use a 512 "Fat Mac" at home; at work I
use a Mac II.  A 512 is useful for learning how to keep things simple,
and sometimes even faster.

Dan Dlugose