Method and apparatus for zero overhead sharing for registered di

Details Method and apparatus for zero overhead sharing for registered di Method and apparatus for zero overhead sharing for registered di

1998-04-21

1999-12-21

Pan, Daniel H.

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output access regulation

710 7, 711169, 712 42, G06F 1320, G06F 928

Patent

active

060062932

ABSTRACT:
A time-shared multitask execution circuit for sharing registered digital hardware among a plurality of users is provided to achieve zero overhead switching while processing as few as 1 sample (in one clock cycle) for each user. The circuit comprises a three register bank, two switches, and a dual port RAM. On any given cycle of the clock, one register is processing data of a current user, one register is writing processed data of a prior user to the RAM, and one register is reading data of a subsequent user for processing from RAM. In this manner, processing, reading and writing are decoupled and proceed in parallel.

REFERENCES:
patent: 5438665 (1995-08-01), Taniai et al.
patent: 5517657 (1996-05-01), Rodgers et al.

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