Idris (operating system)

Idris is an operating system developed by Whitesmiths Ltd. from Westford, Massachusetts. The product was commercially available from 1979 to 1988.

background

Originally written by PJ Plauger , Idris was a unix-like real-time system for the DEC PDP-11 . Plauger began working on Idris in August 1978. Idris was binary compatible with UNIX V6 on the PDP-11, but it could also work on systems without memory management (DEC LSI-11 or PDP-11/23). The kernel required 31 kB RAM , and the C - compiler was similar.

Ports

It was later ported to other platforms such as VAX , Motorola 68000 , System / 370 and Intel 8086 .

In 1986 Atari hired Computer Tools International to port Idris to the Atari ST .

A special version of Idris (CoIdris) was a .com file under MS-DOS and used DOS for I / O services. Idris was ported to the Apple Macintosh by John O'Brien (Whitesmiths Australia) and was still available until the early 1990s.