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Atari 520ST |
Toshiba T1000 laptopby billdeg Total messages in this thread: 1  The 1987 Toshiba T1000 laptop. This is not the first Toshiba laptop, the T1100 came first.
More Pictures">... [ read more ]
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Mark 8 Microcomputer Videoby billdeg Total messages in this thread: 1 Mark 8 Microcomputer Jon Titus LCF Group Collection Floyd Virginia http://www.youtube.com/watch?v=RcgeWmh8ym8">... [ read more ] |
Ed Roberts (MITS / Atlair) dies at 68by billdeg Total messages in this thread: 3 Updated: [ Remembering Ed Roberts / Biography ] 10/12/2010 PC World Article: http://www.p...s_at_68.html Popular Electronics Jan/Feb 1975 Articles http://vintagecomputer.n...-poptronics.cfm More information: http://e.../Ed_Roberts_(computers)">... [ read more ] |
PDP 11 Unibus Machine Controllerby billdeg Total messages in this thread: 1  What we have here is a PDP-11 class Unibus machine controller. From the front panel it looks like this computer was used to splice "something". This is not the complete system. Click image for larger view.
 Digital M series flip chips populate a backplane unit. Here is a close up view of the card labels. Click image for larger view.
I have the Digital book that describes the function of each flip chip in detail. There is no CPU logic, this unit was probably a custom analog">... [ read more ]
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IBM Thinkpad 500 model 2603by billdeg Total messages in this thread: 1  The IBM Thinkpad 500 model 2603 was an early netbook sized laptop from late 1993. This system boots up to Windows 95, but it originally came with Windows 3.1(1).
more pics
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Go Corporation Penpoint Tabletby billdeg Total messages in this thread: 1 
The 1991 GO Corporation Penpoint Tablet Model G400
This is a first generation stylus tablet computer. I don't have a power supply. More pics">... [ read more ]
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Magnavox Mystery Binary Counterby billdeg Total messages in this thread: 8 Updated: [ Testing Homebrew Binary Counter ] 10/06/2010 Please help me identify the use of this unit ... when was it built? http://vintagecomputer.net/Magnavox/">... [ read more ] |
A new Z80 Board for the S-100 Busby monahan_z Total messages in this thread: 1 For people interested in building/repairing S-100 systems, Andrew at N8VEM and I at S100Computers.com have just completed a prototype of a new S-100 Z80 Board. The board is capable of reaching up to10MHz in a system with an active terminated bus. It also can address up to 1M of address space with 16K windows useful for CPM+. If you would like to read about this board please look here:- http://s100computers.com...0CPU%20Board.htm There is a growing list of people getting interested in these S-100 systems. We get these bare boards produced in batches (typically $20-40, depending on demand). So if you would like to be kept in the loop as this board evolves you need to contact Andrew or me. ">... [ read more ] |
Ohio Scientific Challenger 2Pby billdeg Total messages in this thread: 4 Updated: [ OSI 2P Update - RAM OK ] 10/02/2010  The 1977-1979 Ohio Scientific (OSI) Challenger 2P (C2-4P) is made up of two boards: OSI 500 (rev B) CPU and 540 I/O card. The keyboard controller model is 542. There is also a controller card backplane model 582. Click image for more pictures.
Initiated project, photos taken for closeup view of chips and board.
 The OSI C2-4P upon power-on, before hitting the BREAK key to reset the system.<">... [ read more ]
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TRS 80 Model 1 Power Supplies - Repairby billdeg Total messages in this thread: 1 Did you know that if you remove the little rubber feed there are screws that allow a person to access the supply electronics? Further, did you know that there is a fuse in the supply? It's a 1.25 inch 250V, 0.5A fuse. If you have a dead power supply, check the fuse...that might be the problem.">... [ read more ] |
Ohio Scientific Superboard IIby billdeg Total messages in this thread: 1  The 1979 Ohio Scientific Model 600 CPU rev B, known as the Superboard II. Click image for more pictures.
Initiated project, photos taken for closeup view of chips and board.">... [ read more ]
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Vintage Computer Festival MW 2010by billdeg Total messages in this thread: 1 Photo Highlights  The highlight of the Vintage Computer Festival Midwest was the XEROX Alto-II XM computer system. The XM stands for extended memory. Click image for the picture set.
 This was actually a dual festival, co-sponsored by the Emergency Chicago Commodore Club. Click the image to see pictures of the Commodore and Amiga systems from the event. More photos..http://lyonlabs....-2010.html
The Glenside Color Computer Club was present:
http://www.glensideccc.com/
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CompuPro System Support 1by billdeg Total messages in this thread: 5 Updated: [ SS-1 Card Repaired, Replaced -16V fuse ] 09/12/2010 My CompuPro System Support 1 card is on the fritz, but I am working to fix. The signal is being received from the terminal but I can't see the text on the screen, nothing is returned through the IO card. My first guess is that the 1488 or 1489 chips are bad. Swapping did not fix. I checked the voltage regulators. The 7912 in position U2 is not getting the expected voltage. I replaced the 7912 to no improvement. I think now maybe the tant cap in position C3 (or maybe C4) is bad. There are four such caps on the board C3, C4, C7, C8. The manual says that these tant caps are supposed to be 6.8uf 35v tant caps, but when I check the actual caps on the board they're all marked +1.5 25V Now I need to decide whether to trust the manual or use +1.5 25V instead because that's what's there, and it worked for apparently many years that way? ">... [ read more ] |
TRS 80 Model III VR Data Disk IIIby billdeg Total messages in this thread: 1  TRS 80 Model III 26-1061 with a number of upgrades including a VR Data Disk III kit
This computer is not pretty, but it has a lot of interesting modifications. The Model 26-1061 is the first of the TRS 80 Model III's, and believe it or not these systems shipped with BASIC level 1. I am not sure if this system's ROMS have been upgraded but I am guessing yes.
This system has the following upgrades:
1) VRdata Disk III (Tandon TM-100-1A SSSD drives, and what I believe is an external drive port
2) Internal speaker kit
3) Parallel printer kit
4) RS232 kit
5) I/O port
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pentapus II
This image was selected at random from the archive. Click image for more photos and files from this set.
Total messages in this thread: 4
Updated: [ Atari 520ST SF354 Replacement ] 11/03/2010