Microprocessor

Details Microprocessor Microprocessor

2007-03-13

2007-03-13

Pan, Daniel H. (Department: 2183)

Electrical computers and digital processing systems: processing

Architecture based instruction processing

Stack based computer

C712S219000, C712S228000

Reexamination Certificate

active

10227866

ABSTRACT:
The present invention provides a microprocessor which enables task switching with a small time overhead. Upon reception of input of an interrupt control signal during execution of a task-1, a first program counter is switched to a second program counter and a first register file is switched to a second register file to start execution of a task-2. During the execution of the task-2, a task switch controller controls switches to select the first program counter, first memory devices of a processing pipeline circuit, and the first register file to save data stored in them in a save memory. After the data saving, data on a task-3 saved in the save memory is restored in the first program counter, the first memory devices of the processing pipeline circuit, and the first register file.

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