Subject: Re: Ethernet transceiver heartbeat (was Re: VAXstation 2000 netboot)
To: Chuck McManis <cmcmanis@mcmanis.com>
From: Johnny Billquist <bqt@Update.UU.SE>
List: port-vax
Date: 03/02/2000 21:13:12
On Wed, 1 Mar 2000, Chuck McManis wrote:

> DEQNA's are pretty poor performers but are not taxed by most PDP-11's
> (except perhaps the 11/8x or 11/9x variants. They are unique in that they
> can allegedly change their MAC address by replacing an on board PROM. (Not
> that you'd want to, but you can do it.)

All DEC Ethernet controllers (atleast those usable on VAXen and PDP-11s)
can change the MAC address by software.

I would guess that the initial MAC address is decided by some ROM on all
of them, which obviously can be changed.

	Johnny

Johnny Billquist                  || "I'm on a bus
                                  ||  on a psychedelic trip
email: bqt@update.uu.se           ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol