Apparatus for handling differing data length instructions using

Details Apparatus for handling differing data length instructions using Apparatus for handling differing data length instructions using

1991-03-19

1997-02-18

Ellis, Richard L.

G06F 934

Patent

active

056048769

ABSTRACT:
An improvement of the present invention relates to a data length deciding unit of an information processing apparatus using instructions having different data length. The information processing apparatus has a compact ROM for storing microprograms. The information processing apparatus comprises a data length specifying unit for specifying either directly specified data length information or indirectly specified data length information, a storing unit for storing data length information related to a process not contained in the microprograms, a controlling unit for controlling the storing unit, and a selecting unit for selecting one of the outputs of the data length specifying unit and storing unit, and outputting the selected one.

REFERENCES:
patent: 4586130 (1986-04-01), Batts, Jr. et al.
patent: 4649477 (1987-03-01), MacGregor et al.
patent: 4825355 (1989-04-01), Kurakazu et al.

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