>>> 1) Anybody got a pointer to where to learn about ethernet
>>> protocol and bus?

>>> 2) Are there more buses I like theese above?

> OK,  I'll clarify myself:  I am not interested in the higher
> layer protocols, as we have some odd requirements.   What we
> really are looking for are the chips, controllers etc, and
> possibly the lowest error detection and correection etc layer
> where included  (like CAN).
>
> We could roll our own, but if there already exist good chips,
> why bother.  And for established standards there are also nice
> debugging tools :)

There are quite a few Ethernet chip sets out there.  This is
off the top of my head...

Check Intel for 82586 and 82596; check Digital Equipment Corp
(DEC, now owned by Compaq) semiconductor division for 21041
and 21141; check National Semi; check AMD.

Some Motorola 683xx CPUs for embedded markets have serial ports
that can do 10Mbps on chip.  They can do Ethernet by adding a
protection/interface network.  So Motorola may have application
notes with Ethernet information.


> Especially I am looking for Ethernet specification.
> Who owns Ethernet?  (I think i shold look there)

Originally, Ethernet was defined by a triumverate of DEC,
Intel, and Xerox.  They published the original specs for
the 3Mbps version.  It was soon upgraded to 10Mbps where
it got serious market penetration.

IEEE took over or joined in -- not sure if IEEE "owns" it
-- but check IEEE 802.3.


> whatever is www.ethernet.org ?! Somebody who has [registered]
> the name to earn money when selling it?

Seems like a reasonable guess to me.  I'd never heard of it.

                                                Lee Jones