Key register controlled accessing system

Details Key register controlled accessing system Key register controlled accessing system

G - Physics

06

F

354/234, 354/243

G06F 13/00 (2006.01) G06F 12/06 (2006.01) G06F 12/14 (2006.01)

Patent

CA 1092716

KEY REGISTER CONTROLLED ACCESSING SYSTEM ABSTRACT Active address key (AAK) select circuits relate plural key register sections to respective machine-identifiable access types. On each received storage access request, the AAK select circuits outgate an AAK from the key register section corresponding to the machine-identi- fied type for the storage access request. One or more key register sec- tions are provided in an address key register (AKR) in a processor. Other key register sections are provided with I/O subchannels which connect to the channels of a processor. Priority circuits control the sequence of storage access requests received by the AAK select circuits. Different machine-identifiable access types which are sensed in the machine include the instruction fetch, source operand fetch, sink operand store/fetch, and I/O data store/fetch.

275572

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