11 June 2018
I rescued this unmutilated OEM version of a DEC PDP-11/23 with CPU, memory, HD, 8" floppy and 8 serial ports made by Scientific Micro Systems around 1986.
My goal is to restore it, document it, and do some PDP-11 software development.
I need bootable floppies and documentation. Utilities to work with the hard disk would be great. If you have these, please let me know. The brochure says this system can boot RT-11, RSX-11M, RSX-11M-Plus and TSX-Plus, and that it's compatible with RX02 disks so maybe it will boot a stock RT11 disk, I don't know.
10.5" high with hinged top.
Heavier than a dog house.
Model # DSX01174, Assembly # 1002003-0011 D
Label,
back,
front
OS251 by Optimal Systems Corporation.
Picture
No documentation found.
One powers the DEC backplane and one powers the drives.
Both supplies are bad and have been replaced with modern switchers.
+5, -12, +12, +24
Picture,
1 M8186 KDF11-A CPU board with 1 chip LSI 11/23 top, bottom
2 SMS disk controller cabled to another giant disk board then to HD and floppy. SMS zC2M top, bottom
3 Sigma quad serial (1st port displays boot prompt) top, bottom
4 Sigma quad serial
5 Kaiser & Damm, MOT 11 D1 with ribbon cable to, RAM and ROM, 6809, ROMs. CALMOT '83 top, bottom
6 Kaiser & Damm, MM07 (memory management?) 11.Aug.83 top, bottom
7-14 Unused
15-16 Camintonn CMV1000 memory board (probably 1mb) top, bottom
Picture
The large disk controller board is mounted on the hinged top panel.
Cables go to the SMS board in the backplane then to both the HD and FD.
label,
top,
bottom,
Error Map.
8" Quantum Q2020
20mb
512 cyl, 4 heads, 32 sec/trk, precomp:256, landing 513, bytes/sec 256
Does not boot.
Docs:
http://stason.org/TULARC/pc/hard-drives-hdd/quantum/Q-2020-17MB-8-0-FH-MFM-ST412.html
q2020a.png
q2020b.png
q2020c.png
q2020d.png
q2020e.png
q2020f.png
q2020g.png
q2020h.png
q2020i.png
q2020j.png
q2020k.png
q2020l.png
Picture
8" Double Sided
Shugart SA851
It's a shame there's so much bitrot on the webs and some of these links are dead.