22 Sep
2004
22 Sep
'04
11:39 a.m.
How big is a PDT-11/110? My PDT-11/150 is quite a bit
larger than a
DECmate III.
Both the PDT-11/110 and PDT-11/130 are built into VT100 cases, so
that is what they are the size of.
The PDT-11/150 is a separate box which is an 8" floppy drive wide,
about 12" high and about 14" deep.
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.
You forgot memory...
And the box exists, it is a BA11-VA (the Shoebox).
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.
But that is a 4 x 4 backplane... so it is 19" wide (with the
attached power supply).
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL,ST| email: mbg at world.std.com |
| Member of Technical Staff | megan at savaje.com |
| SavaJe Technologies, Inc. | (s/ at /@/) |
| 100 Apollo Drive | URL: http://world.std.com/~mbg/ |
| Chelmsford, MA 01824 | "pdp-11 programmer - some assembler |
| (978) 256 6521 (DEC '77-'98) | required." - mbg KB1FCA |
+--------------------------------+-------------------------------------+