METHOD FOR CONSTITUTING MULTI-OS

摘要

PROBLEM TO BE SOLVED: To provide a method for constituting a multi-OS for reducing the generation of overhead without necessitating any special hardware. SOLUTION: A physical memory 102 is divided for each of plural operating systems. An interruption management program independent of the operating system accepts all outside interruption, and decides which the operating system interruption handler should be started according to an interruption factor. A timing in which the interruption handler should be started is decided according to the executed state of the operating system, and the interruption handler of each operating system is started based on that.