How does Interrupt request (or IRQ) work and why need this?
I want to need following answers
How does interrupt request (or IRQ) work? What is interrupt request level? Why need Advanced Programmable Interrupt Controller (APIC)? What is Master PIC and Slave PIC? What are 16 IRQs and when it’s used? What is IRQ conflict error? What is Message Signaled Interrupts (MSI)? Thank You