CP/M was written by Gary Kildall (sometimes misspelled as Garry Kildale) in then mid 1970’s for Intel 8080 CPU’s. The 8080 was cloned and improved upon by the man that invented the 8080 for Intel when he started Zilog and produced the Z80 CPU. The Z80 is found in many many many devices ranging from the Commodore 128 and the First Nintendo Game Boy.

It had an enormous amount of primarily business software written for it in the late 70’s and early 80’s.

Gary Kildall’s & Digital Research’s CP/M

See Gary Kildall on the Computer Chronicles
TV Show from 1985

Gary Kildall: Inventor of the Operating System CP/M
Life in Review from 1995
27MB 7MB 37MB


What is CP/M

From COMPUTE! April 1985