An interrupt polling unit included within a bus interface unit of a microprocessor is provided. The interrupt polling unit causes an interrupt acknowledge bus transaction to occur. If an interrupt controller receiving the interrupt acknowledge bus transaction returns an interrupt vector indicative of...http://www.google.de/patents/US5948093?utm_source=gb-gplus-sharePatent US5948093 - Microprocessor including an interrupt polling unit configured to poll external devices for interrupts when said microprocessor is in a task switch state
