Post by thread:[BUY]: Free for shipping. INTEL -85 system design

A relative of mine is in poor health. He was involved electronics as a hobby. I am helping him clean out his shop. He is currently in a wheel chair. Some of it may be of interest to people on the list. He does not want to charge anything for the stuff, due to him not remembering its working condition and just go to someone who might use it if they can. The board powers up and has life to it. display shows data I.E. on power up - 80 85. press single step 0347 FE. email for more details. There might be books around for this but I have not found them The board is 11" by 10", 24 key keyboard, 6 digit 7 segment display. I will send pictures on request. contact me off list. Thank you very much. John

On Jan 2, 2006, at 8:50 AM, VULCAN20 wrote: > Some of it may be of interest to people on the list. He does not > want to charge anything for the stuff, due to him not remembering its > working condition and just go to someone who might use it if they can. > The board powers up and has life to it. display shows data I.E. on > power up - 80 85. press single step 0347 FE. > Sounds like an Intel SDK-85: http://www.chookfest.net/computers/SDK-85.html IIRC, those are pretty software-intensive designs; the fact that you get a reasonable display on powerup and behavior on keypresses means that quite a bit is working... There are a couple of published texbook-style books and some online courseware that do "microprocessor education" based on this board, but I couldn't find any of the original documentation. The 8085 was a cute little processor; probably the second one to capture my imagination in my early days. 8080 compatible, but with an easier hardware interface. A three-chip system with ram, rom, and a bunch of IO available was possible (using intel chips that combined memory and IO functions); it looks like this board is based on that design with added keyboard/display controllers... BillW