Latest Projects:
A New 8086 CPU Board, Monitor, CPM86 |
Original MITS Altair 680 on eBayby transient Total messages in this thread: 1 Hi, I am selling an Original Complete MITS Altair 680 Computer with an expander board, 2 memory boards and an I/O board in excellent condition. The auction is here: http://cgi.ebay...tem=290577848590 The computer is in great condition and there are a lot of pictures in the auction. There is no reserve. Please contact me with any questions. Thanks. -Glenn">... [ read more ] |
A Propeller Driven S100 Console-IO Boardby monahan_z Total messages in this thread: 2 Updated: [ S100 Console-IO Board ] 05/27/2011 Andrew and I have now finished our Propeller driven S-100 Console-IO board. This board allows you to utilize a standard IBM-PC keyboard for Console input and outputs a standard VGA signal (e.g. for a modern LCD display). There are a number of port and status bit jumpers that should allow the board to be transparently spliced into most old S-100 systems without any software changes. While the hardware for the board is done, there is ample room for a good Propeller "Spin" programmer to improve upon the software to increase the boards current 80X24 resolution. Please see here for more information:- http://s1...IO%20Board.htm Enjoy">... [ read more ] |
Sage II UCSD Pascal Televideo Terminal |
Vintage Computer Festival East 7.0 2011by billdeg Total messages in this thread: 1 Hi-res Photos 
 I ran a workshop on the basics of interfacing a Teletype Model 33 ASR to a computer. Click on the teletype to download course materials.
 My exhibit, an SWTPc 6800. I took it easy this year.
Panel: Early Microcomputing in New Jersey & Beyond
http://www.youtu...hsn#p/a/u/0/eogVAd1qB1I">... [ read more ]
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IBM 5100by sorcipit Total messages in this thread: 3 Updated: [ PS ibm 5100 ] 05/14/2011 I have for sale a power supply unit for an early 1975 IBM 5100 the model one with a cassette drive. If interested, contact me. Pierre. pierrebeau@globetrotter.net">... [ read more ] |
ASR 33 Rubber Print Head Padby billdeg Total messages in this thread: 1 I bought a foot of 3/8" OD 1/4" ID plastic tubing from the hardware store and inserted over the print hammer head (with the old rubber pad removed). Seems to work great...any comments? Anyone done this see any long-term damage? UPDATE: I received a message that Wayne Durkee's "official" word on the replacement of the rubber head is to use 7/16 OD - 5/16 ID vinyl tubing. Cut 7/8 inch long.">... [ read more ] |
Teletype Workshop at VCF Eastby billdeg Total messages in this thread: 1 Here is the official email about the teletypes. Please read this over carefully. Bill Degnan billdeg-at-aol.com A Vice Pres. M.A.R.C.H. -------------------------------------------------------------- 1. If you have not done so already pick a teletype from the photos here http://www.midat...ro.org/teletypes/ 2. The prices are labeled on the photos: Selling prices: $100 TTY (best cond. has stand, chad paper catch, sheet holder, rare ) $75 TTY (complete/good cond no stand) $75 TTY (fair condition but has stand) $50 TTY (poor cond. / incomplete / parts) 3. There are two ways to get your choice of teletype a. Register for the workshop/Pick up at VCF http://www.vintage....ion=select&id=149 In addition to the workshop itself, your $40 also gets you: - Entry into the drawing to win a free "serviceable" teletype. - $40 appli">... [ read more ] |
PDP 11/34A XX RL01 Drivesby billdeg Total messages in this thread: 2 Updated: [ 11/34A Restoration Begins ] 04/15/2011  The PDP 11/34A XX with flat front console panel
I was lucky to find a PDP 11/34a on the local craigslist, a lot including two RL01 drives and the cabinet, cables, and other pieces. No disks. This thread will contain project notes.
Orignal "before" pictures">... [ read more ]
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CBM Expansion Memory Board 64Kby billdeg Total messages in this thread: 1 PDF Scan of selected pages from the Commodore 8032 64K Memory Expansion Board User Guide.">... [ read more ] |
MICROWORLD / 1980 Videoby billdeg Total messages in this thread: 1 William Shatner short documentary about the history of transistors, microelectronics, etc. http://www.youtube.com/watch?v=q2kd1B0Ybto">... [ read more ] |
Lambda Physik TRS 80by billdeg Total messages in this thread: 2 Updated: [ Lambda Physik FL 580 ] 03/30/2011  The Lambda Physik FL 580 Scan Control device used a TRS 80 Model 1 as it's computer. And it's orange.
The Lambda Physik unit powers up and responds to front panel toggle switches. The scan control unit was attached to the TRS 80 Model 1 via the expansion port. The card cage system would likely have been accessed by running a SYSTEM command from the TRS 80 and then at the asterisk prompt a command like /nnnnn where nnnnn = the memory location (?) of the scan control unit. I tried /12345 but it did not activate the unit. This is the memory location of the stringy floppy.
Preliminary testing reveals a bad TRS 80 power supply, but when a working supply was used the computer was able to boot up. The computer has 16K. model 26-1006. Also attached to the TRS 80 is a set of">... [ read more ]
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Bring up CPM3 for the first timeby monahan_z Total messages in this thread: 4 Updated: [ Bringing up CPM3 on a Hard Disk System ] 03/16/2011 Just FYI, I have written up a step by step set of instructions for installing CPM3 on a floppy disk system. The current writeup is for a very simple "Non-Banked" system. I will later enlarge upon this for a "Banked" system and for a more extensive IDE drive hard disk system. See:- http://s100comp...3%20BIOS%20Software.htm">... [ read more ] |
The Gavalin SC Laptopby billdeg Total messages in this thread: 2 Updated: [ Hi, I have a question about the Gavalin. ] 02/28/2011 I recently picked up the 2nd Gavilan laptop, the SC model.  The 1984 DOS-based Gavilan SC laptop computer.
There was so much battery acid leakage I was amazed I could even power up the system at all (after cleaning with a baking soda solution). When powered up, the system counts from 1 to 5 and then shows a code "010". Not much else. Does not attempt to boot the diskette that came with it. At least the LCD seems to be OK.
pictures">... [ read more ]
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Vintage Computer Festival East 7.0by billdeg Total messages in this thread: 1 Official Web Site: http://www.vintage.org/2011/east/ Pics of exhibits from past events: http://vintagec...cfeast7 Mid-Atlantic Retro Computing Hobbyists http://www.midatlanticretro.org">... [ read more ] |
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Well after 3 months of work and 3 prototype S-100 boards later (thanks Andrew!) I think we finally have an 8086 S-100 board we really like. It runs at 8MHz (two IO wait states) on the S100 bus and appears to be very reliable. Realizing that moving from a Z80 to an 8086 system is difficult for many people I wrote a very extensive 8086 monitor to help you get going. I have written up a fairly detailed step by step process to help people get going. (When the production boards come I will of course add the step by step construction notes). Also I have written up a complete section explaining how to build a CPM86+ operating system with only an CPM(80) system working. All necessary files are included. Here are the pages:- http://s100comp...itor/8086%20Monitor.htm">... [ read more ]