Apparatus for managing system interrupt operations in a computing system.

摘要

An apparatus for managing system interrupt operations in a computing system including a processing unit and peripheral devices. The apparatus comprises a transmission circuit for transmitting signals which effects operative connection among the peripheral devices and the processing unit; an interrupt drive circuit for generating interrupt signals associated with each peripheral device drives the transmission circuit from a first signal level to a second signal level to effect generating an interrupt signal; and an acknowledge drive circuit for generating an acknowledge signal by the processing unit. Each acknowledge drive circuit drives the transmission circuit from an initial signal level to an indicating signal level to effect generation of an acknowledge signal, and drives the transmission circuit from the indicating signal level to the initial signal level upon termination of the acknowledge signal. In its preferred embodiment, the apparatus provides that no peripheral device can generate an interrupt signal for a predetermined time interval following termination of an acknowledge signal. <IMAGE>