Stored program control system with switching between instruction

Details Stored program control system with switching between instruction Stored program control system with switching between instruction

1979-02-13

1981-06-16

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 922

Patent

active

042741386

ABSTRACT:
In a stored program type control system comprising a main memory device for storing data and an instruction word, an input/output device, and a central processing unit including a group of general registers and a program status word store, there are provided an instruction word system including a universal instruction word system, and a sequence instruction system containing a portion of the universal word system which control the content of a program status word, and selecting means responsive to an instruction word or an internal processing sequence at the time of interruption for selecting one or the other of the instruction word systems in accordance with data contained at a portion of the bits of the program status words indicates selection of either the universal status word system or the sequence instruction word system.

REFERENCES:
patent: 3631405 (1971-12-01), Hoff et al.
patent: 3686639 (1972-08-01), Fletcher et al.
patent: 4107785 (1978-08-01), Seipp
patent: 4131943 (1978-12-01), Shiraogawa
Takei, F., et al., New Sequence Controller, "PROSEC", Toshiba Review, vol. 28, No. 2, pp. 171-177, 1973.

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