Click Here to visit our Sponsor
The History of Computing The Magazine Have Fun there ! Buy goodies to support us
  Mistake ? You have mr info ? Click here !Add Info     Search     Click here use the advanced search engine
Browse console museumBrowse pong museum


ZX81 T-shirts!

see details
ZX Spectrum T-shirts!

see details
Ready prompt T-shirts!

see details
Atari joystick T-shirts!

see details
Arcade cherry T-shirts!

see details
Spiral program T-shirts!

see details
Battle Zone T-shirts!

see details
Vectrex ship T-shirts!

see details
C64 maze generator T-shirts!

see details
Moon Lander T-shirts!

see details
Atari ST bombs T-shirts!

see details
Competition Pro Joystick T-shirts!

see details
Elite spaceship t-shirt T-shirts!

see details
Pak Pak Monster T-shirts!

see details
BASIC code T-shirts!

see details
Vector ship T-shirts!

see details
Pixel adventure T-shirts!

see details
Breakout T-shirts!

see details

I > IMSAI  > 8080


This mini forum is intended to provide a simple means of discussion about the IMSAI  8080 computer. If you want to share your own experience or memories, or add relevant information about this system: post a message!

  Click Here to add a message in the forum


Wednesday 19th September 2018
GOplayer (USA)

I was lucky enough to buy the IMSAI 8080C computer at a computer business that had an auction after the owner passed away for $14. ! It works great but I couldn''t bid on the two 8"floppy drives because the $14. was all I had! I begged the auctioneer afterwards for the drives as they didn''t sell, but he wouldn''t relent... My unit needs 3 switch covers(orange/blue) as I accidentally knocked them off... I have them somewhere. The computer is immaculate and works as if new,(love the robustness of older technology electronics). One big TO-3 voltage regulator(5V?) on the back wall on a aluminum 90 degree fin in front of the fan and two big capacitors(electrolytic) in the front in the voltage supply area on the right, walled off by aluminum shield from the S-100 bus slots on the left. The CPU is white w/gold cap. Such a joy to see it operate on the front panel as I load address and data registers(8 bit)using the switches in single step load/review mode. Then I flip then switch for Run and toggle the start switch and watch the digital light show as it computes, branches, adds and moves REAL Binary Data around before I hit the start/stop toggle switch or it reaches a halt in the program. I need to make a digital video of it in action someday. It is still a joy to operate, setup, run and observe the data in red Light Emitting Diodes(LEDs). This was one of the first times we could SEE our data bits and computing in action.

I was a programmer in the Air Force on 64-bit machines in the early 70''s... COBOL, PL/1, RPG, FORTRAN and assembly.

This machine is a museum piece that STILLl functions as it was designed. I had a few Timex Sinclair''s as well. Also great inexpensive machines for their day. Clive Sinclair was a mathmatician and it is reflected in the tight byte codes of his BASIC language computers for the masses. They are great as 8/16 bit scientific BASIC computers, not just for gaming, which is fun, and drove the computing industry to where it is today.

Steve Ingham 9-19-2018

Saturday 12th November 2022
Lorno (Calgary, Canada)

I bought my IMSAI 8080 as a kit back in 1976. By 1979 I had it feeding a Heathkit H9 terminal and was running Northstar Basic. Writing and running Basic Code LOL. Everything is still downstairs in my basement in boxes, although I havent fired them up since 1983.

Thursday 29th September 2011
Edward Kenny (Huntsville, AL USA)

I used a couple of IMSAI 8080''s at NASA in the early 1980''s. Each had a Z80 4MHz CPU and 64KB of RAM. For storage each had a dual set of 8-inch floppy drives. Each also had a 5MB hard drive but were never used much because they were not very reliable and eventually failed.

Saturday 21st August 2010

Raindance Rob - it was indeed used in War Games (check out Fire in the Valley by Paul Freiberger and Michael Swaine)

Saturday 31st July 2010
Raindance Rob (UK)
Rave Info

looks like what David played by Matthew Broderick used in the film Wargames, can anyone confirm ?

Wednesday 17th January 2007
Thomsonicus (Poland!)

now that's what I call oldschool! Respect to all who have been using this piece of fine equipement

Thursday 4th March 2004
ian osgood (Portland, OR)

I learned BASIC and 8080 assembly as a wee lad on one of these. It was owned and tricked out by a housemate, Gail Marshall. He wrote his own keyboard drivers and graphics libraries (so he could do the Game of Life) as well as an implementation of LISP. He hacked an Olivetti daisy-wheel typewriter into a printer! Gail was truly a Real Programmer. We still have a box of 8" disks around somewhere...

Click here to go to the top of the page   
Contact us | members | about | donate old-systems | FAQ
OLD-COMPUTERS.COM is hosted by - NYI (New York Internet) -