Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!iuvax!cica!tut.cis.ohio-state.edu!cs.utexas.edu!samsung!uakari.primate.wisc.edu!dogie.macc.wisc.edu!vms.macc.wisc.edu
From: gilmore@vms.macc.wisc.edu (Neil Gilmore)
Newsgroups: comp.sys.atari.st
Subject: Re: Midi Rings
Message-ID: <3355@dogie.macc.wisc.edu>
Date: 17 Mar 90 21:56:59 GMT
Sender: news@dogie.macc.wisc.edu
Organization: University of Wisconsin Academic Computing Center
Lines: 32

In article <1990Mar16.045429.21246@cs.uoregon.edu>, scott@vortex.uoregon.edu (scott settlemier) writes...

>I was thinking recently about how to crunch some big problems that
>are very well suited to parallel algorithms and not knowing much about
>networks thought this:
> 
>	Connect several ataris with midi cables in a ring so that
>	the one on the left sends output to the right and gets input
>	from the left. You then assign each computer a reference #
>	and just preceed any packet with the number.

I have quite a bit of this done for the ST, in GFA (haven't had time to 
translate to assembly). It sets up a network of machines using MIDI and 
serial ports (not modems yet, give me a chance). It uses any topology 
which could be decomposed into a ring, although it routes messages 
intelligently. So far it has worked well on a small network of 2STs and 
one Amiga (set-up anyway, GFA for the Amiga doesn't support INP?(), 
which is stupid, since the system calls exist, adn I haven't had time to 
figure out how to do the calls frome GFA). However, (Atari's lack of 
documentation flame deleted), I haven't got it set up to run 
asynchornously with applications. This means that occasional calls to 
do_net are required. Incidentally, if anyone knows how to hook up such 
an asynchronous routine like this, please write. I can't seem to find 
where things like interrupts are (except for the retrace queue, and I 
don't really want to muck with that in this case). If you want my 
network stuff, email.

+-----------------------------------------------------------------------+
| Kitakaze Tatsu Raito	Neil Gilmore     internet:gilmore@macc.wisc.edu | 
| Jararvellir,          MACC, UW-Madison bitnet: gilmore@wiscmac3       |  
| Middle Kingdom        Madison, Wi                                     |
+-----------------------------------------------------------------------+