Interrupts and Exceptions topics include: interrupts and its sources, mechanism of interrupts, risk exceptions, and fast interrupts. Interrupts and exceptions are events that cause the CPU to perform certain actions. Here are some differences between interrupts and exceptions: Interrupts: Are external to the program and are issued by interval timers and I/O devices. For example, the arrival of a keystroke from a user sets off an interrupt. Exceptions: Are caused by a program executing an instruction that results in the exception. For example, a program dividing a value by zero results in... Show more Interrupts and Exceptions topics include: interrupts and its sources, mechanism of interrupts, risk exceptions, and fast interrupts. Interrupts and exceptions are events that cause the CPU to perform certain actions. Here are some differences between interrupts and exceptions: Interrupts: Are external to the program and are issued by interval timers and I/O devices. For example, the arrival of a keystroke from a user sets off an interrupt. Exceptions: Are caused by a program executing an instruction that results in the exception. For example, a program dividing a value by zero results in the divide by zero exception. In ARM terminology, an interrupt is actually an exception. Exceptions are conditions or system events that require some action by privileged software (an exception handler) to ensure smooth functioning of the system. The CPU responds to these events in a similar way: In response to an interrupt or exception, the CPU executes an exception processing cycle. The actions that the CPU must take in response to an exception are essentially the same as those for an interrupt. When the exception/interrupt have been handled the kernel performs the following steps: Select a process to restore and resume. Restore the context of the selected process. Resume execution of the selected proces Show less
Interrupts and Exceptions topics include: interrupts and its sources, mechanism of interrupts, risk exceptions, and fast interrupts.
Interrupts and exceptions are events that cause the CPU to perform certain actions.
Here are some differences between interrupts and exceptions: Interrupts: Are external to the program and are issued by interval timers and I/O devices. For example, the arrival of a keystroke from a user sets off an interrupt. Exceptions: Are caused by a program executing an instruction that results in the exception. For example, a program dividing a value by zero results in the divide by zero exception.
In ARM terminology, an interrupt is actually an exception. Exceptions are conditions or system events that require some action by privileged software (an exception handler) to ensure smooth functioning of the system.
The CPU responds to these events in a similar way: In response to an interrupt or exception, the CPU executes an exception processing cycle. The actions that the CPU must take in response to an exception are essentially the same as those for an interrupt.
When the exception/interrupt have been handled the kernel performs the following steps: Select a process to restore and resume. Restore the context of the selected process. Resume execution of the selected proces
Join 4M+ learners. Unlock unlimited quizzes, wrong-answer tracking, flashcards + reminders, study guides, and 1-on-1 challenges.