Computer system capable of interruption using special protection

Details Computer system capable of interruption using special protection Computer system capable of interruption using special protection

1986-01-17

1987-10-20

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 946

Patent

active

047018461

ABSTRACT:
A computer system capable of interruption using a special protection code for a write interruption region of a main memory, including a subsidiary memory connected with a central processor unit and the main memory. The subsidiary memory delivers a translated real address code and protection codes including ordinary protection codes and the special protection code. Checking of the special protection code in the special protection code check number is carried out when the special protection code from the subsidiary memory is present and an access instruction from the central processor unit is a write instruction. Thereby, writing into a region beyond a stack region in the main memory is possible and the information of execution of the write interruption to the region beyond the stack region in the main memory is transmitted to the central processor unit.

REFERENCES:
patent: 4432050 (1984-02-01), Harris et al.

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