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Installing Core into PDP 11/40

32K x 16 Core backplanes installed into my working PDP 11/40. Conversation below explains layout. Click image for larger view.
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by billdeg - 05/22/2016
Total messages in this thread: 3 Last Post: [ SPC Backplane Testing ] 05/24/2016

Computer History and Restoration Links

The thread date will be updated to indicate the last update. Suggest a site here. Bitsavers Software and Document Archive http://bitsavers.trailing-edge.com TextFiles.com rTTY Art Repository http://artscene.textfiles.com/rtty/COLLECTION/ Mazjel.com Datastore: ... [ read more ]
by billdeg - 05/16/2016
Total messages in this thread: 1

PDP 11/40 72 inch cabinet model

For lack of a better name, I will refer to this PDP 11/40 as the "full height" or 72" cage system to differentiate ... [ read more ]
by billdeg - 04/06/2015
Total messages in this thread: 3 Last Post: [ re-assembly and power ] 05/12/2016

Using M9312 Bootstrap Terminator / RL02

M9312 Bootstrap Terminator CONSOLE Test
I set the jumpers on the M9312 card to use the CONSOLE program. The CONSOLE is a monitor program that allows a per... [ read more ]
by billdeg - 07/20/2015
Total messages in this thread: 7 Last Post: [ Further Testing ] 05/11/2016

Mac 128K with SAD MAC error 041800

yes, but what does 041800 mean exactly? which chip or section is bad? http://docs.info.apple.com/article.html?artnum=7748 04 = class code = memory test mod 3 1800 = chip identification codes, in binary combination 1000 is bit 12, chip G9 0800 is bit 11, chip G8 Need two 4264 chip... [ read more ]
by billdeg - 09/13/2007
Total messages in this thread: 4 Last Post: [ Flattened Horizontal ] 04/27/2016

Digitial MicroVAX 3100 30 System

MicroVAX 3100 with Storage Expansion
Pictured here is a 1988 (?) Digital MicroVAX 3100 with Storage Expansion boxes. The ... [ read more ]
by billdeg - 04/10/2015
Total messages in this thread: 15 Last Post: [ VMS Next Steps ] 04/24/2016

Digital VAX 4000-200

The Digital VAX 4000-200
The Digital VAX 4000-200. Click for larger image.
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by billdeg - 04/27/2015
Total messages in this thread: 19 Last Post: [ DECnet ] 04/24/2016

Vintage Computer Festival East XI

Bill Degnan DEC MicroVAX 3100 VCF East 2016
Here I am next to my DEC MicroVAX 3100 display. I also brought the VAX 4000-200, VT100 and VT220 terminals, a T... [ read more ]
by billdeg - 04/18/2016
Total messages in this thread: 1

Processor Tech 3P + S ASR 33 Jumpers

Processot Tech 3P+S ASR 33 Jumpers
The front view of the Processor Technologies 3P+S I/O S-100 card, used by early S-100 systems such as the Altair ... [ read more ]
by billdeg - 04/01/2016
Total messages in this thread: 1

For-Sale Thread

NOTE: date of thread = the last update date. Note there are some old specific item for-sale threads on this site. If they're not linked from here, they're probably expired/sold. Kilobaud (Microcomputing) Magazines - Nearly complete set - $lets make a deal MITS Altair 8800b processor card, RAM... [ read more ]
by billdeg - 03/21/2016
Total messages in this thread: 1

Honeywell H316 Kitchen Computer

Honeywell H316 Kitchen Computer and H516
Back cover of the Honeywell H316 General Purpose Digital Computer Operators Guide. May 1969. This guide a... [ read more ]
by billdeg - 03/15/2016
Total messages in this thread: 1

Process Computer Systems, Inc.

The Bennett Computerized Marketing System was among the early point of sale systems with an integrated microprocessor. PCS apparently made the computer board as a sub... [ read more ]
by billdeg - 03/07/2016
Total messages in this thread: 1

Commodore B Series SID Jukebox?

Commodore B-128 with uIEC SD card drive
Commdoore B-128 reading off a uIEC SD card disk drive. Ah modern c... [ read more ]
by billdeg - 03/05/2016
Total messages in this thread: 1

Dell Dimension XPS 466V

Dell Dimension XPS 466V
The 1993 Dell Dimension XPS 466V was one of the nicer 486 gaming machines built before the Pentium era. Click for... [ read more ]
by billdeg - 01/18/2016
Total messages in this thread: 8 Last Post: [ We've come full circle ] 03/02/2016

Wes Clark of DEC fame Dead @ 88

http://www.techrepublic.com/article/wesley-a-clark-legendary-computer-engineer-dies-at-88/ Wes worked with Ken Olson founder of Digital Equipment Corp, and I think he designed a modified version of the IBM TX-0 to serve as a stand-alone system which then inspired Ken Olson to design the PDP 1. H... [ read more ]
by billdeg - 02/23/2016
Total messages in this thread: 1
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