Mitsubishi Denki Kabushiki Kaisha

Masami Iwahashi

Shigeki Nankaku

Teiichiro Inoue

Toshihiro Kawakami

A processor context stored in a stack area at a time of an interrupt occurrence is saved in a context saving area of an ICB corresponding to an ISR that is interrupted. The ISR corresponding to the interrupt is set to an execution-waiting state. An ICB having a highest priority from among the ICBs that are set to the execution-waiting state is selected. A processor context saved in a context saving area of the selected ICB is stored in the stack area. An ISR corresponding to an ICB selected by an interrupt return command is executed.

Growing community of inventors

Tokyo, Japan

Masami Iwahashi