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Old Knowledge of x86 Architecture : “8086 Interrupt Mechanism” - mywisdom - 09-09-2014
Source
http://sw0rdm4n.wordpress.com/2014/09/09/old-knowledge-of-x86-architecture-8086-interrupt-mechanism/
Interrupt is a mechanism that allow hardware or software to suspend normal execution on microprocessor in order to switch to interrupt service routine for hardware / software. Interrupt can also desribed as asynchronous electrical signal that sent to a microprocessor in order to stop current execution and switch to the execution signaled (depends on priority). Whether an interrupt is prioritized or not depends on the interrupt flag register which controlled by priority / programmable interrupt controller (PIC).
Full Article
http://sw0rdm4n.wordpress.com/2014/09/09/old-knowledge-of-x86-architecture-8086-interrupt-mechanism/