How does 8086 microprocessor handle interrupts? Explain with the help

Question

How does 8086 microprocessor handle interrupts? Explain with the help of an example. Write a program using 8086 assembly language to output a string “Computer Organisation includes assembly programming”

30 Nov 2023

Answer :

Word Count : 461

The 8086 microprocessor handles interrupts through a mechanism involving the Interrupt Vector Table (IVT) and the Interrupt Descriptor Table (IDT). When an interrupt occurs, the microprocessor looks up the corresponding interrupt vector in the IVT to find the address of the interrupt service routine (ISR). The ISR is then executed to handle the interrupt.

Here is a general overview of how the 8086 microprocessor handles interrupts:

1. Interrupt Request (IRQ): An external device or internal condition triggers an interrupt request. There are hardware interrupt lines (IRQ0 to IRQ15) for different types of interrupts.

2. Interrupt Acknowledge: The microprocessor acknowledges the interrupt by sending an acknowledgment signal on the bus.

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