Read status controller

Electrical computers and digital processing systems: memory – Storage accessing and control

Reexamination Certificate

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Details

C711S103000, C711S156000

Reexamination Certificate

active

07966445

ABSTRACT:
A controller in a processing system can detect programmable bit sequences sent from a host processor to an external device, such as a memory, indicating whether a response from the external device needs to be read. The controller can also read a response from the external device and act appropriately, e.g., determine if an error has occurred by comparing the device's actual response to one or more programmably determined responses. Upon reading a particular response, e.g., a response indicating an error, the controller can issue an interrupt request to the host processor for further action. The controller can also track which external device access caused a particular response to occur.

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