Got a pdp 11/23

HP/DEC/Compaq workstations/servers and operating systems (HP-UX, Tru64, OpenVMS, NonStop, etc.)
Forum rules
Any posts concerning pirated software or offering to buy/sell/trade commercial software are subject to removal.
MrBill
Posts: 228
Joined: Fri Dec 28, 2012 12:50 pm
Location: Vero Beach, Florida

Got a pdp 11/23

Unread postby MrBill » Sat Mar 11, 2017 11:32 am

Picked this up about a week ago, still getting it cleaned up.

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image
:Octane: :Octane: :Octane: :Octane: :Octane2: :Indy: :Indy: :Indigo: :Indigo2: :Crimson:Image :Tezro: :Tezro: :Onyx2: :Onyx2: :Crimson:

MrBill
Posts: 228
Joined: Fri Dec 28, 2012 12:50 pm
Location: Vero Beach, Florida

Also ASR33 teletype

Unread postby MrBill » Sat Mar 11, 2017 11:49 am

Oh, also a ASR33 teletype. Not exactly dec, but its going to be the main console for my 11/34, so its kinda relevant.

Image

Image

Image

Image

Image

Image

Image
:Octane: :Octane: :Octane: :Octane: :Octane2: :Indy: :Indy: :Indigo: :Indigo2: :Crimson:Image :Tezro: :Tezro: :Onyx2: :Onyx2: :Crimson:

User avatar
commodorejohn
Posts: 588
Joined: Tue Oct 02, 2012 1:22 pm
Contact:

Re: Got a pdp 11/23

Unread postby commodorejohn » Sat Mar 11, 2017 12:31 pm

Mmm, nice :)
Computers: Amiga 1200, DEC VAXStation 4000/60, DEC MicroPDP-11/73
Synthesizers: Roland JX-10/SH-09/HS-80/MT-32/D-50, Yamaha DX7-II/V50/TX7/TG33/FB-01, Korg MS-20 Mini/ARP Odyssey/DW-8000/M1, Ensoniq SQ-80, E-mu Emax HD/Proteus-2, Casio CZ-5000, Moog Satellite, Sequential Circuits Prophet-600

User avatar
smj
Donor
Donor
Posts: 1650
Joined: Mon Nov 12, 2007 7:54 pm
Location: Berkeley, CA, USA, NA, Earth, Sol
Contact:

Re: Got a pdp 11/23

Unread postby smj » Sun Mar 12, 2017 4:09 pm

Lucky dog! Looks like you've got a bit more than a plain 11/23 there. In fact, is that a pair of TU58 tape drives mounted in the top of the chassis, with a controller above the card cage? And what else is on that grey board with the i8253 timer?

I'll bet this system's got an interesting story to tell...
Then? :IRIS3130: ... Now? :O3x02L: :A3504L:- :A3502L: :1600SW:+MLA :Fuel: :Octane2: :Octane: :Indigo2IMP: :Indy: ... Other: DEC :BA213: :BA123: Sun, DG AViiON, NeXT :Cube:

MrBill
Posts: 228
Joined: Fri Dec 28, 2012 12:50 pm
Location: Vero Beach, Florida

Re: Got a pdp 11/23

Unread postby MrBill » Sun Mar 12, 2017 5:26 pm

Contrary to what the pictures look like, i did not take a bite out of the corner O.o
The corosion is quite bad in the corner. Power supply is quite crusty as well. I am thinking about replacing the power supply with a modern atx variant with some over voltage protection, etc, to protect the boards better than that behemoth of a power supply.

that is the tape controller mounted above the card cage, correct. kinda an odd setup.
It does have 2 TU58 drives in it, although they need new capsans and i have no tapes. I fail to see the point though, it attaches via serial and can redially be emulated with a dos pc and a serial cable. I could do away with tape read errors all together. It just seems like a finicky tape setup from the get go to me. Maybe ill get the drives going if i can get a bunch of tapes for a good price. Again though, i have a 9 track tape drive in a full size rack over here that is known working and i can get the tapes for $15 a reel, ill stick with the known working drive in the rack for now.

The grey board is a boot board. looks home brewed. The machine was custom built in some university in Illinois, thats all the story i got on it. The seller said that there is a second machine just like it, i do not see myself needing another of this particular design. Quiet and tiny compared to the 11/34 rack.
:Octane: :Octane: :Octane: :Octane: :Octane2: :Indy: :Indy: :Indigo: :Indigo2: :Crimson:Image :Tezro: :Tezro: :Onyx2: :Onyx2: :Crimson:

User avatar
smj
Donor
Donor
Posts: 1650
Joined: Mon Nov 12, 2007 7:54 pm
Location: Berkeley, CA, USA, NA, Earth, Sol
Contact:

Re: Got a pdp 11/23

Unread postby smj » Mon Mar 13, 2017 1:42 pm

Heh - I have a couple custom-built NS32k-based systems from the University of New Brunswick, Interesting design decisions all around. Lots of heavy gauge sheet steel, but very well-formed and nicely finished.
Then? :IRIS3130: ... Now? :O3x02L: :A3504L:- :A3502L: :1600SW:+MLA :Fuel: :Octane2: :Octane: :Indigo2IMP: :Indy: ... Other: DEC :BA213: :BA123: Sun, DG AViiON, NeXT :Cube:


Return to “HP/DEC/Compaq”

Who is online

Users browsing this forum: No registered users and 2 guests