Data-processing apparatus and method

Details Data-processing apparatus and method Data-processing apparatus and method

1978-05-19

1980-08-12

Thomas, James D.

Boots, shoes, and leggings

G06F 918, G06F 1300

Patent

active

042176387

ABSTRACT:
The data-processing apparatus of this invention comprises a central processing unit (hereinafter referred to as the "CPU"), and a plurality of groups of memory units in the CPU to be applied as a general register set. The groups of memory units are provided in a number which is equal to the number of interrupt programs and each group has been previously supplied with information on the individual interrupt programs (such information includes, for example, data on entry address, program status word, etc.). The present data-processing apparatus further has a general register-set pointer provided in the CPU. Where the general register set pointer is supplied with a particular numerical value, the corresponding one of the memory unit groups is selectively used as a general register set.

REFERENCES:
patent: 3646522 (1972-02-01), Furman
patent: 3793631 (1974-02-01), Silverstein
patent: 3798615 (1974-03-01), Weisbecker
patent: 3833888 (1974-09-01), Stafford
patent: 3840861 (1974-10-01), Amdahl
patent: 3858182 (1974-12-01), Delagi
patent: 3938098 (1976-02-01), Garlic
patent: 4079453 (1978-03-01), Dahl
patent: 4079455 (1978-03-01), Ozga
patent: 4086627 (1978-04-01), Bennett
patent: 4087854 (1978-05-01), Kinoshita
"TMS 9900 Microprocessor Data Manual", Texas Instruments Inc., Oct. 1976, pp. 3-7.
"PDP 11/45 Processor Handbook", Digital Equipment Corp., 1971, pp. 9-13.
"Microprocessors and Microcomputers", B. Soucek, 1976, pp. 427-466.

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