MICRODOS
Kisenchand Ranai · ACM SIGSMALL/PC Notes · 1986
This paper describes an experimental implementation of a single-user operating system called MICRODOS. It has adopted a layered software system model (hierarchical nature) and is written almost entirely in the high level language BCPL. The main feature of MICRODOS is that it has avoided or simplified many of the major problems that are normally associated with large multi access operating systems.