Multiple operating system control method

Abstract

An inter-OS control software for switching OS's in operation executed on a single CPU is installed, and plural OS's are made alternately executed. A control program is executed exclusively on one OS, which controls the controlled apparatus. A supervisory control program and a development environment program are executed on another OS, and a memory space is divided so as to make no effect for the operation of the control program. A higher real-time performance and reliability can be established with a single CPU architecture.

What is claimed:  
     
         1 . An multiple operating system control method for a multiple operating system having a plurality of operating systems executed in a digital arithmetic processor in which a first operating system and a second operating system of said plurality of operating systems are alternately switched and executed on said digital arithmetic processor, wherein said multiple operating system is provided with inter-OS control software switching said first operating system and said second operating system, said inter-OS control software referring to an event processing table.