Data processing unit with hardware assisted context switching ca

Details Data processing unit with hardware assisted context switching ca Data processing unit with hardware assisted context switching ca

1997-09-12

2000-10-03

Banankhah, Majid A.

Electrical computers and digital processing systems: multicomput

Computer-to-computer data routing

Least weight routing

G06F 900

Patent

active

061286419

ABSTRACT:
The present invention relates to a method of context switching from a first task to a second task in a data processing unit having a register file with a plurality of general purpose registers and a context switch register, a memory comprising a previous context save area and an unused context save area. The memory is coupled with the register file and an instruction control unit with a program counter register and a program status word register coupled with the memory and the register file. The method comprises the steps of acquiring a new save area from said unused save area, storing the context of the first task in said new area, linking the new area with said previous context save area.

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patent: 5008812 (1991-04-01), Bhandarkar et al.
patent: 5142677 (1992-08-01), Ehlig et al.
patent: 5201039 (1993-04-01), Sakamura
patent: 5550993 (1996-08-01), Ehlig et al.
patent: 5655132 (1997-08-01), Watson

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