Path: utzoo!utgpu!watserv1!maytag!xenitec!zswamp!root
From: root@zswamp.fidonet.org (Geoffrey Welsh)
Newsgroups: comp.sys.cbm
Subject: Re: C128 + 1764?
Message-ID: <6669.27A08574@zswamp.fidonet.org>
Date: Thu, 24 Jan 91 17:30:17 EST
Organization: Izot's Swamp BBS - Kitchener, Ontario

 >From: bhelf@athena.mit.edu (Bill Helfinstine)

 >The only reason that you couldn't use a 1750 on a C-64 is the
 >power supply.

   That's not quite true: the 1750 won't work on all C64s; the 1764 includes a 
small change to affect the bus timing.  However, from a programming point of 
view, a 1764 is just a 1750 with 256K missing.  Even the REU ID bit (0 for the 
128K 1700 and 1 for the 512K 1750) reads 1 on a 1764 (which is why you should 
test manually for the amount of RAM in an REU in stead of trusting the ID bit 
<sigh>)
 



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