Registers used in 8259
What are the registers available in 8259?
It contains 3 registers commonly known as ISR, IRR, IMR & there is 1 priority resolver (PR).
What is 8259 used for?
The 8259 combines multiple interrupt input sources. It binds all the interrupts into a single interrupt output. It is also considered as the host microprocessor.
How many pins are in 8259?
Intel 8259 is designed as a 28-pin-programmable IC. It is available as a package named DIP or the Dual inline package.
Registers used in 8259
The 8259 is a programmable interrupt controller. It was designed to manage multiple interrupt requests from various peripheral devices in a computer system. 8259 is a programmable interrupt controller which has a unique style. Some certain interrupt conditions regulate the interrupt levels as well. These interrupt levels are also known as the edge-triggered interrupt where the masking process is related to the individual interrupt bits with 64 pins. In this article, we are going to discuss the Registers used in 8259 in detail.