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From: ranger@ecsvax.UUCP (Rick N. Fincher)
Newsgroups: net.micro.apple
Subject: Re: //GS
Message-ID: <2119@ecsvax.UUCP>
Date: Fri, 10-Oct-86 15:32:17 EDT
Article-I.D.: ecsvax.2119
Posted: Fri Oct 10 15:32:17 1986
Date-Received: Sat, 11-Oct-86 21:30:57 EDT
References: <5733@decwrl.DEC.COM> <849@cbmvax.cbmvax.cbm.UUCP>
Organization: UNC Educational Computing Service
Lines: 14

> The data bus is 8 bits long.  The address bus is 24 bits long; during
> the first half of a cycle the high order 8 bits of address show up on the 
> data bus, where they are externally latched so that they'll be around for
> the second half of the memory cycle, which is where most of the action takes
> place.  There's no way you could have 16 bit data bus expansion slots, I
> don't know what they do with the addressing of these slots now.
> 

I think he meant 24 bit address bus expansion slots.  This could be done
easily, although it would probably be better to demux the 8 high address
lines on a card.   

Rick Fincher
ranger@ecsvax