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For-Sale / Items Wantedby billdeg Total messages in this thread: 1 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. RK06 Alignment Disk RK06 Data Disks UNIBUS Regulators (parts / not guaranteed but easily restored) More! FOR SALE If we have items for sale, visit our eCommerce site at Kennett Classic: https://www.kennettclassic.com/surplus/ |
Osborne Executiveby billdeg Total messages in this thread: 1  Here's an Executive, the model that came out after the original Osborne I. Click image for larger view. ">... [ read more ]
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Original ACHTUNG Computer Lab Humorby billdeg Total messages in this thread: 1  Here is the original wording of the computer lab humor "keep off" message, ACHTUNG, found in computer labs throughout the later 1960s and 1970s. This print is dated 1967 and is the oldest-known original printed version.
">... [ read more ]
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Osborne 1 (b) with RAM Driveby billdeg Total messages in this thread: 2 Updated: [ Keyboard Replaced ] 06/11/2021  This Osborne 1b (later models came with with the "bluer trim") includes an innovative external display prosthetic device designed to hold the monitor level on top of the computer while in use. Click image for larger view.
 Here is another view of the system. Click image for larger view.
 This "Drive C:" expansion unit fits into the disk holder of the computer and functions a">... [ read more ]
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Digital Equipment Corporation PDP-8by billdeg Total messages in this thread: 3 Updated: [ Flip Chip Boards Replaced ] 06/29/2024  Drew helping wheel our new DEC PDP-8 computer, donated to Kennett Classic museum in late October 2022. I drove the computer from Chicago a few weeks after VCF MW.
 Front panel view, DEC PDP-8 computer
This is the rack model acquired in late fall 2022. The system can run the "chase the lights" program indicating a minimum CPU function. Powering off and then on again, the system retains the values of the chase the lights program and will re-run again.
NEXT: Document cards installed, detailed pictures and testing with a Teletype ASR 33.
Just so you know, I have powered up this system 25 times and worked with the front panel, but I wanted to clear a good block of">... [ read more ]
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Leading Edge Computersby billdeg Total messages in this thread: 1  This is the extremely rare 1982 Leading Edge MP-1673 L also known as the Model M ("M" because they used Mitsubishi parts). Click image for larger view.
Anyone have a 1982 Leading Edge Model M? "M" for Mitsubishi parts.
Not easy to find them. So I was wondering if there might be a 1982
Mitsubishi PC sold in Japan....?
There is the 1982 Mitsubishi Multi16 - a CP/M computer:(16 bit? but
it's not MS DOS)
https://www.reddit...i16_1982/
Mitsubishi could have put out
a PC of their own but they chose to partner with Leading Edge instead.
As many of you know the Japanese stayed with CP/M longer than the US.
Or maybe Mitsub. sold Leading Edge Model M's as "Mitsubishi" OEM in
Japan b">... [ read more ]
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1961 Beckman DEXTIR Computerby billdeg Total messages in this thread: 2 Updated: [ Call from Beckman alumni ] 10/30/2024  Beckman Instruments, Inc. made a connected industrial research computer system called the DEXTIR, which was designed for to prepare data for computer entry. The model pictured in this photo was installed at the ESSO Research Labs in Baton Rouge, LA in July 1961. Click image for larger view.
Beckman issued a proposal to GM some time after the above photo was taken for an automatic monitoring and control system for the Die Casting Department of the Guide Lamp Division at General Motors. The comptuer that the DEXTIR would feed its data was (I believe) a UNIVAC 1108 computer from the same era. Perhaps also an IBM 704, 709, 7090) Download it here
To my knowledge there is nothing published about this machine.">... [ read more ]
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SC/MP single board computerby billdeg Total messages in this thread: 1 
National Semiconductor started selling a CPU called the Simple Cost-effective Micro Processor, or "SC/MP". This image shows the SC/MP microprocessor at the heart of a simple system and current loop to RS232 converter. Click image for larger view.
Here is a closeup of the SC/MP-1. This is the first gen version, part number ISP-8A/500. It's clocked at 1 MHz and uses P Channel MOS technology. Note the silkscreen date.
This microprocessor was first available in April 1976. Click image for larger view.
More to come on this one. The builder of this SBC followed a magazine's des">... [ read more ]
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Computer History and Restoration Linksby billdeg Total messages in this thread: 1 The thread date indicated last update. Suggest a site here. Bitsavers Software and Document Archive http://bitsaver...dge.com Retroarchive Multi-Platform http://w...ve.org TextFiles.com rTTY Art Repository http://artsc...LLECTION/ Mazjel.com Datastore: Manuals and system docs galore. http://maben.ho...S100/index.html Dave Dunfield's Site - vintage computer newbies should start here, disk archiving info here http://www.classic...dunfield Glitchworks FDC Results Registry - Drive controllers for imaging disks https://services....tfdc_results Bryan's Old Computers Document Archive http://bytecoll....com/m8_docs.htm The Homebrew Computer Club Newsletters https://ark...-computer-club Every Computer That Ever Was (list) http:">... [ read more ] |
IBM 3270 PC (Model 5271)by billdeg Total messages in this thread: 3 Updated: [ IBM 3270 PC Update ] 01/23/2024  The IBM 3270 PC, model 5271 after repairs made to the RAM. Click image for larger view.
 View of display connector cable attachment to rear of IBM 5271. Note the dual card. Note also the RAM expansion card has been removed for troubleshooting. Click image for larger view.
 The display paired with the 3270 PC (part no. 5272)running a color calibration program. Click image for larger view.
More photos
This computer was donated to Kennett Classic. It initia">... [ read more ]
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The Litton Sweda Internationalby billdeg Total messages in this thread: 2 Updated: [ Sweda User Describes Model 8452 Use ] 01/18/2024  The Floppy Disk Model 8452 by Litton Sweda. No information is forthcoming about the computer that used this drive.
Litton Sweda International business equipment, cash registers, and like many companies of the late 70's and early 80's they experimented with business computers. Litton was based in New Jersey, but this drive was manufactured in Japan. I am guessing that this is simply a re-branded something or another drive. If you're looking to complete a Litton Sweda system contact me if you're interested in this drive.
Pics">... [ read more ]
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CBM SuperPET Tips (CBM S9000)by billdeg Total messages in this thread: 5 Updated: [ SuperPet Starter-Pak ] 12/03/2023 The manuals supplied by Commodore are frustratingly incomplete and require a lot of head banging and experimenting to accomplish what should be simple tasks. The top of the klugey list is printing a program listing. Here are some useful tips and tricks including a few things that are not found in the original manuals. I still recommend that you try to find and read a copy of the SuperPET manuals (pamplets) too. 1. In order to use the SuperPET in 6809 mode, you must have the OS boot disk titled "SuperPet WCS" present in drive 1 (left drive) of an 8050 (or 8250) dual-diskette drive. Set the side dip switches to 6809 and R/W. If you do not have this disk or a 8050/8250 drive, you'll have to trouble doing much more than staring at the initial boot menu. This menu lists the programming language options (Pascal, COBOL, FORTRAN, BASIC, etc.) BUT these components are not included in">... [ read more ] |
Cramer Intel 8080A Microcomputerby billdeg Total messages in this thread: 1 
Cramer Electronics Incorporated started advertising this 8080 kit microcomputer, the "Cramerkit", in late 1975 for $495 (or was it $1495?) but none were delivered until the spring of 1976. The Cramerkit was a designed by Microcomputer Technique Inc. and was shipped partially assembled. Click image for larger view.
I managed to find a partial view of the product advertising, from Electronics magazine April 1976. According to the advertisement, the assembly of the kit takes minutes, meaning the wirewrapping and sockets are done at the factory. Download
The owner of thi">... [ read more ]
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Cromemco Dazzlerby billdeg Total messages in this thread: 1  Testing the Cromemco Dazzler video cards in an IMSAI 8080. Note sense switch 12 is up, which generates the pattern displayed on the video. The test program is listed in the Cromemco Dazzler user manual
More Photos
Most software produced for the Dazzler was created to be run on a Z80 Cromemco Z1 (enhanced IMSAI 8080) running CP/M.
The computer pictured is an IMSAI with an 8080 CPU and no CP/M.
I would like to try to convert the CP/M Z80 programs to 8080 format. I would then and run them from memory without CP/M. Not impossible.
So why did no one do this? 8080 is not much different than Z80, but I think it's a speed thing. I should be able to at least make basic graphics. What would realy">... [ read more ]
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This list is maintained regularly. Thread date is last update. Contact me Here. M7261 KD11-B CPU board 1 CONTROL LOGIC & MICROPROGRAMMED MODULE (PDP 11/05 or 11/10) Findex portable computer (any model) PCS Micropac 80, Superpac 180 and related DVW Microelectronics Husky Commodore B Series hi-profile keyboard(s) AT&T UNIX PC keyboard(s) Computer Data Systems "Versatile 2" s-100 computer 1977 (Newark, Delaware USA computer) Casio FX-9000P Canon CX-1 or BX-3 Acorn BBC Model A Eagle Computer Eagle II E (I have disks, need computer) Sord SM80X Oki 1F COM7 laptop Morrow Decision 1 Microvoice Nugen Sycor Model 302 Key-Cassette Terminal California Technology International 1108-A Manual/documentation Any mid 70's micros like the Sphere, Compucolor II, HAL, Jupiter Computers Commodore 264 CBM VC 1020 or">... [ read more ]