I think Decnet can run over a serial connection (rs-232) if you have Decnet 
software. It’s not medium dependent. I got it to work years ago from 
vax-to-vax. I’m not aware of any pc decnet software although I haven’t looked 
much into it. Should work over ethernet too. Do you have any Decnet pc software?

Sent from my iPhone

> On May 31, 2022, at 20:57, Bill Degnan via cctech <cctech@classiccmp.org> 
> wrote:
> Here is a link to a set of screen shot of the autoexec.bat and
> config.sys for an IBM PC I came across today and the boot screen when
> these are attempted without the networking hardware attached..
> https://www.vintagecomputer.net/IBM/5150/5150_DEC/
> Specific to IBMPC to DECNET networking...anyone worked in this
> environment?  Not me.  I don't have the D drive that fails or the
> network, but I am curious what I would need to make this work.  Maybe
> I can put something together.  Anyone using a Digital Ethernet
> Personal Computer Bus Adapter today?
> The A drive had a jumper between 4-pin connectors 10 and 13 but it was
> not functional and I replaced the drive entirely.  Not sure if I
> needed a 720K drive attached externally or something in order for the
> 5 1/4" drive jumpered this way to work.  I have a pic of this there
> too.
> Weird.
> Thanks in advance.
> BIll

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