Interrupt handler
COMPUTING FUNCTION TRIGGERED BY AN INTERRUPT
Interrupt service routine; Interrupt routines; Interrupt Handler; Interrupt Service Routine; FLIH; SLIH
In computer systems programming, an interrupt handler, also known as an interrupt service routine or ISR, is a special block of code associated with a specific interrupt condition. Interrupt handlers are initiated by hardware interrupts, software interrupt instructions, or software exceptions, and are used for implementing device drivers or transitions between protected modes of operation, such as system calls.