Path: utzoo!utgpu!watmath!clyde!mcdchg!chinet!att!osu-cis!tut.cis.ohio-state.edu!rutgers!apple!amdcad!sun!pitstop!sundc!seismo!uunet!mcvax!enea!diab!pf
From: pf@diab.se (Per Fogelstr|m)
Newsgroups: comp.arch
Subject: Re: Problems with NeXT (25 MHz NuBus clock discussion)
Message-ID: <461@ma.diab.se>
Date: 27 Oct 88 07:40:45 GMT
References: <103@xenon.UUCP> <10360@cup.portal.com>
Reply-To: pf@ma.diab.se (Per Fogelstr|m)
Organization: Diab Data AB, Taby, Sweden
Lines: 10

In article <10360@cup.portal.com> bcase@cup.portal.com (Brian bcase Case) writes:
>Well, the EET article is, as is so typical, simply inaccurate.  The NeXT
>NuBus runs at 25 MHz.

One thing that strikes me:  How many slots can NuBus have when it uses this
high clock rate ??  Multibus II have 20 at 10Mhz and the clock distrubution
in the middle. (However having it there or somewhere else dosen't really
matter). As i understand it NeXT NuBus uses CMOS swing on the signals wich
also complicates the bus driving. 
Any comments ??