Pipelined decimal character execution unit

Details Pipelined decimal character execution unit Pipelined decimal character execution unit

1983-04-01

1986-07-01

Heckler, Thomas M.

Boots, shoes, and leggings

G06F 938

Patent

active

045983658

ABSTRACT:
The present invention relates to an execution unit of a computing system which executes data manipulation type instructions and arithmetic type instructions on data words having a plurality of decimal character-type data formats. The pipelined execution unit of the present invention includes a first stage element which temporarily stores input data, the input data including operation commands defining said decimal type instructions, and input operand data. A second stage element executes a first predetermined group of the decimal type instructions. A third stage element, operatively coupled to said second stage element, executes a second predetermined group of the decimal type instructions, the second predetermined group including arithmetic type instructions.

REFERENCES:
patent: 4179736 (1979-12-01), Wilhite
patent: 4224677 (1980-09-01), Kindell et al.
patent: 4396982 (1983-08-01), Wada et al.
patent: 4530052 (1985-07-01), King et al.

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