Re: Interfacing With Ethernet

["David Buckley" <db@xxxxxxxxxxx>]

--- In ukha_d@xxxxxxx, "Andy Laurence" <andy@a...> wrote:
> Whilst chatting in the pub last night ...  Is there any
> way to interface with a PCI/ISA/PCMCIA ethernet card simply
> from a cheap microcontroller?

Gee, you would have to be a rocket scientist to solve that one.

Fortunately, Ed Cheung is a rocket scientist, and worked this all
out a few years back.  Collecting $20K in the process.  What a bloke.

http://www.edcheung.com/awards/pic2k/pic2k.htm

I reckon it would be not that hard to update his design for PCMCIA
cards, as ISA cards are probably getting a bit hard to come by, and
PCMCIA ethernet cards seem quite cheap.  I did some work a while
back interfacing PCMCIA, and IIRC you can run these cards in "8 bit
mode" allowing easy interfacing to a simple micro.

As for the card - something like a Linksys EC2T, which is
conveniently NE2000 compatible?

Heres adding a CF to a PIC:
http://www.circuitcellar.com/echips-pdfs/0201/c0201mspdf.pdf


Other options:

The Zilog ez80 - z80 plus ethernet core, need to add rom/ram, use a
PSD?: http://www.zilog.com/products/family.asp?fam=218

Rabbit core board with a carrier board?

This thing? http://www.ipsil.com/products/d8930.htm

And finally, free software: http://www.dunkels.com/adam/uip

And finally finally, a caution, any solution not involving something
that already has a MAC address will require OUI registration,
expensive.



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