MS-DOS was more of a clone of CP/M. The sort of thing that was mostly possible because CP/M is so minimal that one person can rewrite/port it in a just a few weeks. MS-DOS also cleaned up some of the rough edges of CP/M, like soft locking the system if you tried to access an non-existent drive.
It's an operating system used on 8-bit microcomputers (8080 and Z80-based). It's (sort of) an ancestor (API inspiration, really) to MS-DOS.
MS-DOS was more of a clone of CP/M. The sort of thing that was mostly possible because CP/M is so minimal that one person can rewrite/port it in a just a few weeks. MS-DOS also cleaned up some of the rough edges of CP/M, like soft locking the system if you tried to access an non-existent drive.
Interesting look at the controversy surrounding Microsoft, IBM, and CP/M.
https://spectrum.ieee.org/did-bill-gates-steal-the-heart-of-...
No, MCP was a much older operating system (https://en.wikipedia.org/wiki/Burroughs_MCP).
and also in Tron https://tron.fandom.com/wiki/Master_Control_Program