Data processing device including a microprocessor and an additio

Details Data processing device including a microprocessor and an additio Data processing device including a microprocessor and an additio

1997-07-31

1999-03-30

Malzahn, David H.

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36471602, G06F 738

Patent

active

058896228

ABSTRACT:
The arithmetic unit in a data processing system with a microprocessor and an additional arithmetic unit carries out special arithmetic operations, preferably integrated in a single semiconductor chip, is controlled by the microprocessor via a number of registers. Several sets of such registers are provided. The registers of one set are selected via a selection circuit. As a result, a set of registers which is not required during execution of a calculation by the arithmetic unit can be filled with new data by the microprocessor and, after completion of the calculation in the arithmetic unit, switching over to a newly filled set of registers takes place so that the arithmetic unit can continue with a new set of operands without having to observe a waiting period.

REFERENCES:
patent: 3617720 (1971-11-01), Gentleman
patent: 4811267 (1989-03-01), Ando et al.
patent: 4969121 (1990-11-01), Chan et al.
patent: 5530662 (1996-06-01), Ide
patent: 5732251 (1998-03-01), Bartkowiak

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