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Converting Northstar DOS for MITS 2SIO

by billdeg
Total messages in this thread: 1
I think this is right...needs to be tested. port 20,21 and so on, standard settings for the card. 2901 022 2908 023 290D 022 2815 023 2919 022 2902 022 2929 022 202B 011 292D 022 300 BAUD OR 4800 BAUD boots DOS but nothing to screen...hmmm come back to this later.">... [ read more ]

Polymorphic Systems Poly 88

by billdeg
Total messages in this thread: 5
Updated: [ burned out traces ] 12/16/2011
The Polymorphic Systems Model Poly 88 S-100 Computer
Remove the orange cover to reveal a 5-slot S-100 backplane, fan, and power supply
The rear view ports. Serial number 0846.
More Pics Restoration will be a challenge, but it's worth the effort. No testing yet. System is missing 8080 chip, fuse, and who knows what else.">... [ read more ]

Burroughs Corporation

by billdeg
Total messages in this thread: 1
A Burroughs A580 tape reader. Click image for related photos.
A local Burroughs expert has donated a number of interesting Burroughs artifacts from the 1960's and 70's. If anyone who reads this post has a comment about how these devices are incorporated into a system, please let me know. As I get more items I will upload the photos. These items will all be taken to the MARCH vintage computer exhibit in Wall, NJ ( See also Detailed photos">... [ read more ]

Tektronix 535 Oscilloscope

by billdeg
Total messages in this thread: 1
The Tektronix Model 535 Oscilloscope
pics This thread will contain notes about the cleaning and experiments with the Model 535 scope. Not pictured is the Type 53/54C Plug-In unit and cart. ">... [ read more ]

Timex Sinclair 2068

by billdeg
Total messages in this thread: 1
The Timex Sinclair 2068. Click image for larger view.
This thread will contain restoration notes. Looking for a power supply, although I assume I can fashion something else temporarily. I have no software or manuals.">... [ read more ]

Kaypro 2000 Laptop

by billdeg
Total messages in this thread: 1
The mid-80's Kaypro 2000 laptop was I think the only LCD laptop made by that company. Classic 80's design. This was a 8086 DOS-based system with a pop-up 3.5" drive. Click image for a few more photos.
">... [ read more ]

Friden Flexowriter

by billdeg
Total messages in this thread: 1
A Friden Flexowriter - the interface of choice for the Digital PDP-1 computer. Click image for a few more photos.
This relic of the late 50's early 60's is bound for an exhibit at the the MARCH vintage computer "museum" in Wall, NJ">... [ read more ]

Commodore Plus/4 NTSC

by billdeg
Total messages in this thread: 2
Updated: [ Commodore Plus/4 D64s for NTSC ] 12/03/2011
I am looking for NTSC software for the Commodore Plus/4. Not 4K stuff for the C-16. For more information about the Plus/4 follow this link, and look down the left column of the page:">... [ read more ]

A useful NTSC Commodore Plus/4?

by billdeg
Total messages in this thread: 1
A complete Commodore Plus/4 system with CM-141 display, joystick, box/manuals, and a 10-box set of software.
When you buy a Plus/4 system from Ebay, expect the "CPU" chip, the 8501R1 (or 7501R1), to be dead. The classic symptom will be a pattern of small orange horizontal dashes on the screen, and a failure to initialize into BASIC. I was fortunate to find a source for these chips, no longer available by the way, and fix the system you see here. The next obstacle one must overcome to making your Plus/4 system useful is to find software. Most of the Plus/4 software was written for the PAL version, and very little will work on an NTSC system. I have searched extensively and collected the "best of" programs for NT">... [ read more ]

Donner 3500 manual needed

by keithgreenhalgh
Total messages in this thread: 10
Updated: [ Thanks ] 12/02/2011
I am restoring a donner 3500 but need a manual for it. Does anyone have one? Keith in Victoria">... [ read more ]

The Evolution Of IBM Computers

by billdeg
Total messages in this thread: 1
The Computer Age - The Evolution of IBM Computers
Self-published computer history brochure by IBM in 1976 chronicling the history of the computer from 1890 through 1976, with an emphasis on the contributions made by IBM. Click image for full-color PDF - enjoy!
Hollerith's Sensible Census Taker, 1890. Click image for larger version.
"..Late in the 19th century, Herman Hollerith, of Buffalo, New York, began to mull over the problem of speeding up the processing of information. He worked for the U.S. Census Office. It has taken 7 1/2 years to compete the census of 1880. And the 1890 census would take">... [ read more ]

IBM XT sn 4359455

by billdeg
Total messages in this thread: 1
The IBM XT model 5160 with Color Graphic Array (CGA) monitor.
More pictures One of my favorite computer systems, this one is in beautiful shape for its age. The IBM 5160 is an excellent system to use for testing hard drives for use in other systems. Remember though, some jumper changes will be necessary.">... [ read more ]

Sharp PC-7100 Portable

by billdeg
Total messages in this thread: 5
Updated: [ Sharp PC-7000 ] 11/07/2011
Yet another 80's portable, this time from Sharp Electronics.
The Sharp PC-7100 Portable
The blue back-lit LCD screen is still crisp, and the original DOS was 2.11.
No restoration work necessary, this system is in perfect working order, and came in the original box with original packing materials. Pictures">... [ read more ]

Compaq Portable 286

by billdeg
Total messages in this thread: 2
Updated: [ Compaq Portable 286 ] 10/22/2011
The Compaq Portable 286 is one of the rarest Compaq portables, very few were made with "Compaq Portable 286" nameplate.
This system has a 10MB hard drive and came with Compaq DOS, the original manual, and an AST add-on card of some type. The system will overheat after a few minutes. I need to spend more time with this one to get it running properly. Photos">... [ read more ]

Greetings from MirandaSoft!

by Kuya.Marc
Total messages in this thread: 1
Hello Everybody! I am originally known, and still known as Marcos Miranda, the founder of MirandaSoft Computer Services in Seattle, Washington, USA, in July 1992. Though I have my own blog, it really looks like I should be part of Though I can't contribute pictures, unless a USB port can be installed at the back of my head, I would like to post stories of my historical past, which is the original foundation and basis for my naturally-born Geek Life. Many, if not most of the pictures of computers posted in, are actual devices I had either operated and/or programmed, and I would like permission to use pictures from for my blog, showing the hardware that made me a geek, today. For those that don't know about me, or may have forgotten about me, here's some info to refresh those minds... I am 41 years old now. I learned abo">... [ read more ]
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