Priority vectored interrupt having means to supply branch addres

Details Priority vectored interrupt having means to supply branch addres Priority vectored interrupt having means to supply branch addres

1979-12-19

1982-02-09

Springborn, Harvey E.

Boots, shoes, and leggings

G06F 942

Patent

active

043153143

ABSTRACT:
In a computer system, a struture uses a method for rapidly accessing and executing a sub-routine selected in response to a service request from an external source. The system provides a storage unit containing the addresses of the sub-routines called for by the service requests, with the addresses of the sub-routine being identified by the received service requests. Also provided is a register containing the address of a given instruction and control logic responsive to a received service request to enable the register to become the main program counter and thereby point to the given instruction. The control logic responds to the given instruction to alter the contents of the register to a predetermined value. A decoder responds to the altered contents of the register to concurrently disable the main memory of the system and to enable the storage unit which then supplies the address of the selected sub-routine to the control logic while the main memory is disabled. The control logic then loads the requested sub-routine address into the register which acts as the program counter for the execution of the selected sub-routine.

REFERENCES:
patent: 3497630 (1970-02-01), Lucas et al.
patent: 3599176 (1971-10-01), Cordero, Jr. et al.
patent: 3675214 (1972-07-01), Ellis et al.
patent: 3757307 (1973-09-01), Cosserat et al.
patent: 3905025 (1975-09-01), Davis et al.
patent: 3988719 (1976-10-01), Whitby et al.
patent: 4000487 (1976-12-01), Patterson et al.
patent: 4090238 (1978-03-01), Russo
patent: 4156905 (1979-05-01), Fassbender
Preliminary Data, CDP 1802D and CDP 1802DC-RCA, File No. 1023, Aug. '77, pp. 1-21.
Digital Integrated Circuits, COS/MOS 8-Bit Priority Encoder, File No. 876, Sep. '76, pp. 1, 3, 6-8.
Digital Computer System Principles-H. Hezlerman, McGraw-Hill, 1967, pp. 350-355.

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