resurrecting a PDP-11/10

From: Fred N. van Kempen <waltje_at_pdp11.nl>
Date: Tue Feb 25 14:21:00 2003

On Tue, 25 Feb 2003, Ethan Dicks wrote:

> > serial tape drive on your second serial port (you DO have a second slu?)
>
> On a machine that old? Unlikely. Machines of the era before the DZ-11,
> and especially machines that were not destined for timesharing, tended
> to have few serial ports, - a console and probably nothing else.
My good old 11/10 had 4 DL-11's, thankyou. One for teh console
(in current-loop mode) which I believe was an LA75, and the other
three had either a terminal or a connection to the "big" PDP at
school (11/34a 7th Ed. UNIX) so I could play with things. I still
have my console DL-11 here- its kind of sacred to me.

> It's easy enough to _add_ a second SLU card, (DL-11something), _if_
> you have one lying around (which I expect he doesn't).
DL-11W (with clock) or DL-11E (w/ modem control) would be good.

> As a place to put RT-11, a virtual TU58 isn't a bad idea. Hopefully
> wharever emulator you have can emulate both units - the TU58 is kinda
> small, even compared with 8" floppies.
Thats how I had it then.. the "disk server" ran on the 11/34a, over
the serial line.

> How much RAM does VTserver require? Older versions of RT-11 (those
> contemporary with the 11/10) are usable at aroun 8KW, IIRC. Of course
> the full 28KW is nice, especially if you want to run large apps like
> ADVENT, but the CUSPS should all run with minimal RAM.
About 100K. The client routine in the PDP-11 uses about 400 bytes.

--fred
Received on Tue Feb 25 2003 - 14:21:00 GMT

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