From: David Wood (jbevren_at_starbase.globalpc.net)
Date: 2007-11-13 02:58:15
Revisiting token ring, there is a problem that can be mitigated.
Systems that aren't yet running the network software won't pass the packets
to the next link in the ring. This can be mitigated by having a circuit
link the in and out together until an output on the userport is set. ;-)
That was my only concern against using a token ring, and this (small)
epiphany (spelling?) is making me rethink the topology.
Using a ring network also solves addressing issues, somewhat. It's possible
to easily address an uninitialized network's nodes directly.
-jbevren
On Mon, 12 Nov 2007 ruud.baltissen@abp.nl wrote:
> Hallo Jim,
>
>
> >> telling the system that the network is alive by pulling it High. The
> >> first C64 to be started sees a (H) on this line and waits for its
> >
> > Don't you mean L?
>
> Yep, indeed. I thought that I changed that. The first idea was starting
> with (H) and pulling it to (L) but then I got this idea of using (H) as
> active signal so it also could be used as a (small) power source. But
> now it seems I forgot to change the first (H).
>
>
> > This suffers if more than one machine power up at the same time
>
> The idea was to power-on only _one_ machine by hand and this one sees a
> (L) and thus asks if it should start the network software. Witht the
> right electronics installed, the rest of the C64's will start-up and see
> a (H).
>
>
> > I was rather hoping something like the IEC ATN line....
>
> No problem, but then, as said, a collision detection is needed. But
> whether to use collision detection, master/slave, token ring or another
> solution is a matter of SW and IMHO we can discuss that thoroughly after
> we have decided on the hardware.
>
>
> --
> ___
> / __|__
> / / |_/ Groetjes, Ruud
> \ \__|_\
> \___| URL: Ruud.C64.org
>
>
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