Fixed my pdt11/150

Warner Losh imp at
Sun Apr 26 19:54:54 CDT 2020

On Sun, Apr 26, 2020, 5:36 PM Chris Zach via cctalk <cctalk at>

> They were interesting little devices. Apparently someone ported
> Multiplan or Visicalc to one but Dec shot the project down. They were
> essentially a turnkey personal computer in the late 1970's but DEC was
> afraid they would cut into the sales of their minicomputers.
> So it was sold as a branch office terminal connector. You could boot
> RT11 and poll 4 terminals and a printer, sending the data over a sync
> serial modem port to the home office. Sad.
> Fortunately Dec wouldn't make the same mistake with the Professional
> systems. Oh wait, they did, no wonder they went out of business....

They made all new kinds of mistakes you never thought possible with the
pro, decmate and rainbow.


> On 4/26/2020 6:31 PM, John Foust via cctalk wrote:
> > At 03:33 PM 4/26/2020, Chris Zach via cctalk wrote:
> >> So I've had a boat anchor pdt11/150 here for awhile. It's probably one
> of the weirdest pdp11s ever built: An 11/03 CPU ish, six serial ports, ish,
> and a pair of RX01 drives.
> >
> > I remember using one for a while in the early 80s.  I kind of liked it.
> > I think the local DEC rep gave it to us for a song for some reason.
> >
> > - John
> >

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