In this paper we present a method for reducing the context switching time in multitasking operating systems. We assume that our proposed model for context switching is based on a single processor system in which one process runs at a time. Main purpose of our proposed unified hardware/software approach is how to reduce the time delay being occurred by context switching. As we know, the time delay for context switching, the switching from a current running process to another process consists of time to back up the current process into memory space and to initialize a new process into running mode. This involves saving and restoring the processor registers and stack information. In the paper the proposed approach will be discussed with aperiodic and periodic jobs.
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