*BSD News Article 3940


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Newsgroups: comp.unix.bsd
Path: sserve!manuel!munnari.oz.au!uunet!mcsun!sun4nl!utrcu1!klamer
From: klamer@mi.el.utwente.nl (Klamer Schutte)
Subject: Re: 680x0 version of 386BSD?? [Was: Re: Mac version of 386BSD??]
Message-ID: <klamer.714298926@mi.el.utwente.nl>
Sender: news@utwente.nl (USENET News System)
Organization: University of Twente, BSC-El
References: <1992Aug18.105723.13123@olymp.informatik.uni-bonn.de> <1992Aug18.174205.23671@news.iastate.edu> <1992Aug19.093937.14857@olymp.informatik.uni-bonn.de> <1992Aug19.155359.629@athena.mit.edu>
Date: Thu, 20 Aug 1992 08:22:06 GMT
Lines: 24

In <1992Aug19.155359.629@athena.mit.edu> bri@pegasus.mit.edu (Brian D. Carlstrom) writes:

>In article <1992Aug19.093937.14857@olymp.informatik.uni-bonn.de> volker@sfb256.iam.uni-bonn.de ( Volker A. Brandt ) writes:
>>In article <1992Aug18.174205.23671@news.iastate.edu> niko@iastate.edu (Nikolaus E Schuessler) writes:
>>>Since most of the source is written in C, I believe that most of the time
>>>is going to be spent writing drivers for disks, displays, etc...

>i just had an interesting thought. wouldn't ib be a bit easier to port 
>to the 68k apollos, since they use an ISA bus, which is supported by
>386bsd? i realize that the video cards they use are not standard, but
>you could at least get it up and going by using a pc card and monitor.

One word of caution: beware of the byte order in words! On a 80x86
(PC style) it is little endian, and on a 68K it is big endian.
Which means it is just the other way around... And which means that
the same code accessing word-size registers on I/O cards almost
certainly fails, if it is not aware of this problem. (and not
efficient if it does...)

Klamer
--
Klamer Schutte			Tel: +31-53-892778	Fax: +31-53-340045
Faculty of electrical engineering -- University of Twente, The Netherlands
preferred: klamer@mi.el.utwente.nl     SMTP: klamer@utelmi01.el.utwente.nl