Книга: Real-Time Concepts for Embedded Systems

10.4 A Closer Look at Exceptions and Interrupts

General exceptions have classifications and are prioritized based on the classifications. It is possible there exists another level of priorities, imposed and enforced by the interrupt hardware, among the external interrupts. Understanding the hardware sources that can trigger general exceptions, the hardware that implements the transfer of control, and the mechanisms for determining where control vectors reside are all critical to properly installing general exception handlers and to writing correct general exception handlers.

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