Real PDP11 model question

From: Ed Kelleher <>
Date: Sun Sep 19 17:44:00 2004

At 06:03 PM 9/19/2004, you wrote:

>How big is a PDT-11/110? My PDT-11/150 is quite a bit larger than a
>DECmate III.
>To the best of my knowledge the smallest possible PDP-11 made out of real
>hardware would be a 4-slot dual-height backplane, with a dual-height CPU
>(ideally a PDP-11/73), DLV-11J (providing console port), 3rd party disk
>controller w/bootstrap (preferably SCSI). That would leave room for one
>additional dual-height board. You'd have to figure out the power-supply
>and how to wire up any disk or tape drives. I'd build something like
>this, if I had the backplane, but I don't.
>The smallest DEC PDP-11 that I'm aware of is the PDP-11/03, but you've got
>to add a external drive of some sort.
>For people where a system the size of a BA23 is an issue, your best bet is
>going to be to simply run under emulation. In my case it isn't the size
>of the systems so much that is an issue, it's how much space all the
>documentation I have takes up!

What about the VT103, a VT100 with bigger power supply and 4 slot QBus

Ed K.
Received on Sun Sep 19 2004 - 17:44:00 BST

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