Non-masking interruption


Non-Maskable Interrupt (NMI) - A special type of interrupt that occurs in most processor architectures. What distinguishes it from the regular interrupt is that it is not possible to ignore it by setting the appropriate bit mask in the Interrupt Mask Register (IMR) of the interrupt controller, hence the term "non-masking".

Currently, NMI interrupts are mainly used to debug program code, which can turn off regular interrupts by shortening their circuit (eg operating system code). Comments

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