Bertram, 

Here's something you might be able to help me with.  This is from someone
having difficulites netbooting their MicroVAX 3100 (Model SZ12??? --
never heard of that one).  Everything during the boot process seems to go
well up until the bootloader executes.  They followed the instructions of
my VAXstation netboot HOWTO, so they should be using the `mopboot'
provided in your netboot.tar.gz file.

Some big questions would be:

[1] Does that mopboot have a standalone ethernet driver for MicroVAX
    3100's?

[2] Which VAX models are supported by the netbsd-v31 netbsd-v20 kernels?
    (I'm guessing VS2000 for v20 and VS3100 for v31).  It be sort of silly
    for this person try getting the netbsd-v31 kernel booted if it doesn't
    actually support the MicroVAX 3100.

Other questions I have are (open to anyone):

[3] Are there netbsd kernels and mopboot images available which support
    MicroVAX 2000's and 3100's?

[4] What *are* the differences between the MicroVAX and VAXstation 3100's
    and 2000's?  From skimming the mailing list, I gather that the like
    numbered machines are very simillar, but that there are some
    significant differences between the VAXstation and MicroVAX systems.
    Could somebody enlighten me with a little detailed exposition?  (Or
    point me to a good source).

I'd sort of like to know some of this as I'd like to provide more correct
information in my netbooting HOWTO about exactly which machines are
supported. In it's present state the instructions are fairly general with
strong references to VAXstation 3100's but nothing explicitly saying that
"this won't work on your MicroVAX 3100."

-brian.

---------- Forwarded message ----------
Date: Tue, 20 May 1997 21:30:15 +0200
From: Eschenmoser Marcel <marcel.eschenmoser@emnet.ch>
To: Brian D Chase <brianc@carpediem.com>
Subject: Re: Net booting a MicroVAX 3100

Thank's a lot for your quick answer.

The model is SZ12. (Oops, there are a lot of different models and Systems
from Digital! ;-) )  Is a MicroVAX and a VAXstation not the same?  I saw a
message, a couple of weeks ago, where the author wrote that a VAXstation
and a VAXserver is almost the same. (from the physical point of view)
What's the difference between a VAXserver and a MicroVAX? (both use SCSI) 

Is there a better chance to boot a VAXserver 3100 over MOP? or should I
try with my VAXft 3000? 

Thank's for any hints. 

Best Regards, 

Marcel

At 14:34 19.05.97 -0700, Brian Chase wrote:
>On Mon, 19 May 1997, Eschenmoser Marcel wrote:

>> Compiling the Prog's as described in your document wasn't a problem. I can
>> see activities on the MOP-Server during boot. But the VAX goes into an
>> endless loop.
>> 
>> What I see on the console:
>> -ESA0
>> Nboot
>> :/netbsd
>> le_softc.sc_r2=0x3a0000
>> device: le0 attached to 08:00:2b:...
>> le0: transmit timeout, stat=0x13
>> le0: output buffer busy
>> le0: output buffer busy
>> le0: output buffer busy
>> .
>> .
>> and so on until BREAK
>> 
>> Do you have any Idea about what's wrong?

> I'm not certain.  It looks like everything's gone well up to the point
> where the NetBSD bootstrap program (mopboot) gets loaded by the MOP
> server.  But it looks as though something went wrong with the bootstrap's
> standalone ethernet driver (stating the obvious here :-).  I'll have to
> check with the port-vax people to see what they know.  I'm not positive
> that the bootstrap program I referenced in the HOWTO actually supports
> the MicroVAX 3100 (or which models of MV3100 it supports).  The model
> number of your MV 3100 would probably be a good bit of info to have
> first.
> -brian.