Computer read next instruction system

Details Computer read next instruction system Computer read next instruction system

1982-10-06

1987-03-17

Heckler, Thomas M.

Boots, shoes, and leggings

G06F 930

Patent

active

046512764

ABSTRACT:
This read next instruction system (RNI) fetches and parses multi-byte instruction streams by means of a picoprocessor subsystem in conjunction with a state machine controller. These controllers cause the input data, which constitutes software instructions, to be parsed into a plurality of first rank instruction registers. Upon reception of an appropriate command from the main CPU system, the information contained in the first rank registers is transferred into second rank instruction registers. Then the RNI system continues to parse more data which replaces the transferred data in the first rank instruction registers. The data in the second rank instruction registers is used directly by the main CPU for the following functions: map branching and conditional branching based on OP codes and sub OP codes; address computation based on address register and displacement information; use of literals for test masks and software branch address; and determination of word length.

REFERENCES:
patent: 4177514 (1979-12-01), Rupp
patent: 4325118 (1982-04-01), DeVita et al.

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