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MITS Altair 220043K (43rd Kit made)

by billdeg - 08/14/2011
Total messages in this thread: 1
Bruce Damer's YouTube video about the oldest mint condition Altair 8800 computer.... http://www...h?v=nuMCs2Qym7Y From this video I learned that the first two digits of the original MITS Altair 8800 were always 22. Interesting. I discovered that right behind me in my workshop I have had the 43rd MITS Altair kit made. Serial number 220043K. Wow. This kit would have been shipped in January 1975. At the time there was a huge demand for the kits and I don't think it's unreasonable to assume they shipped at least 43 kits by the end of January. That also assumes the kits were mailed in the same order as the serial number, but I don't know. Bruce had factory-assembled #47, a boxed Altair 8800 with S/N 220047A - where the "A" indicates factory-assembled. Anyway just a factoid. Altair 8800 S/N 220043K A while ag... [ read more ]

Tauntek In-Cicuit Emulator testing

by billdeg - 08/01/2011
Total messages in this thread: 1
http://tauntek.com/8080-In-Circuit-Emulator.htm - an in-circuit emulator for the Intel 8080 microprocessor. I have three Poly 88 computers to test, and I have an 8080 ICE by Tauntek to use for testing. This thread will contain testing and restoration notes, log output, and descriptions of how the 808o ICE is used as a tool. The baseline machine will be a MITS Altair 8800a that I know works properly. I will compare and contrast results between the Altair and the Poly 88's, and then the IMSAI 8080. I have also done a few tests with a Processor Tech Sol-20, but it's not electrically sound yet for real testing. NEXT: Test RAM cards in the Altair so that I have a few working cards for testing unknown systems.... [ read more ]

ASCII Art on PDP 8e

by billdeg - 07/21/2011
Total messages in this thread: 2
Last Post: [ Power Use PDP 8/e with twin RK05s ] 07/31/2011
SNOOPY.BA ASCII Output... [ read more ]

Recently Acquired Drives Inventory

by billdeg - 07/27/2011
Total messages in this thread: 1
The date of thread will equal the last update date. WD Caviar 2700 HD with controller. Also matching 3.5 1.44" and 5 1/4" with controller and cables. Came from early Pentium system, untested but good shape WD Caviar 31200 1281.9 MB (1.2GB) WD Caviar 2540 540 MB Chinon FB-357 3.5" drive in 5 1/4" half-height enclosure. Quantum Fireball CX - QTY=1 Quantum Fireball 3.8 GB - QTY=4 Seagate ST351A/X Seagate ST3630A 631MB Seagate ST3491A 420MB, with Hewlett Packard 1.44 drive, set. Seagate Medalist 2132 / ST32132A with cables and 3.5" drive, RAM Seagate ST-412 HD full height 5 1/4" IBM OEM DDRS-34560 1998 IBM Type 0665 full height 5 1/4" P/N 9088526 IBM drive 1/2 height 5 1/4" with controller Teac FD-334HF 3.5" Doub Den, from old 8088 laptop... [ read more ]

Looking for Ferguson Bigboard I & II

by enrlaz - 07/05/2011
Total messages in this thread: 3
Last Post: [ Asking for info ] 07/06/2011
Hi at all, i'm looking for as i written in object. My website is http://elazzerini.interfree.it I'd like to enter in contact also with people who had or has even now those SBC, or had or has its addons daughterboards like DSDD FDC, memory expansion, and so on. Thanks in advance for any help. Enrico - Pisa - ITALY... [ read more ]

A New 8086 CPU Board, Monitor, CPM86

by monahan_z - 06/25/2011
Total messages in this thread: 1
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 ]

Original MITS Altair 680 on eBay

by transient - 06/16/2011
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 Board

by monahan_z - 05/24/2011
Total messages in this thread: 2
Last Post: [ 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

by billdeg - 05/20/2011
Total messages in this thread: 1
Opening boot screen displayed on a Televideo terminal attached to a Sage II computer. Click image for hi-res version.
More pics... [ read more ]

Vintage Computer Festival East 7.0 2011

by billdeg - 05/19/2011
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 ]

IBM 5100

by sorcipit - 05/05/2011
Total messages in this thread: 3
Last Post: [ 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 Pad

by billdeg - 04/30/2011
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 East

by billdeg - 04/22/2011
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 Drives

by billdeg - 10/27/2010
Total messages in this thread: 2
Last Post: [ 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 ]

CBM Expansion Memory Board 64K

by billdeg - 04/03/2011
Total messages in this thread: 1
PDF Scan of selected pages from the Commodore 8032 64K Memory Expansion Board User Guide.... [ read more ]
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