[Coco] hardware port mapping question
msmcdoug at iinet.net.au
Mon Apr 23 05:05:15 EDT 2007
Mike Pepe wrote:
> Essentially what you're making here could be a 4x4 crossbar switch:
> It could be done with a bunch of latches and tri-state buffers.
> Arbitration could be an issue, but it sounds like what you're looking
> for is for each CoCo to have one "out" port that can be read by the
> others. If that's the case, it becomes more possible. If you're looking
> to write values into a common register, it becomes much more complex.
You could, of course, come up with a protocol that requires each computer to
write to its own latch only.
| Mark McDougall | "Electrical Engineers do it
| <http://members.iinet.net.au/~msmcdoug> | with less resistance!"
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