🚀 go-pugleaf

jdc@isis.cs.wayne.edu (Jon Cardwell) writes:
+---------------
| We're looking for sources or references for a "multi-drop serial protocol"
| i.e. one that allows multiple devices to be attached to the same serial line.
| Our goal is to have data exchanged between a host cpu and any number of
| ( well ok, 8 :) attached slave devices. ... Any help (even remote references
| from 15 years ago) would be most welcome.
+---------------

If you can run sync instead of async and you're willing to do some
coding, Localtalk would be a good protocol for this sort of thing -
it's fast (in comparison to async), it only needs an 8530 and some
simple driver hardware, and you can take advantage of an existing base
of machines that talk it.

If you need to do async (e.g. your host only has async ports) then any
poll-response protocol would do - you just need to ensure that each
poll has an address in it, and require that slave devices only
transmit in response to a poll.

				Peter Desnoyers
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