Suppose, you need to service 48 hardware interrupts on your 8086 microprocessor. Explain how many 8259 (PIC) chips you’d need to service the above number of interrupts. Further, explain why only a total of 64 interrupts can be serviced with the help of cascading.

Suppose, you need to service 48 hardware interrupts on your 8086 microprocessor. Explain how many 8259 (PIC) chips you’d need to service the above number of interrupts. Further, explain why only a total of 64 interrupts can be serviced with the help of cascading.

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter4: Processor Technology And Architecture

Section: Chapter Questions

Problem 10RQ: How does pipelining improve CPU efficiency? What’s the potential effect on pipelining’s efficiency...

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Concept explainers

Fundamentals of Input and Output Performance

The I/O subsystem is a component of computer system design that uses buses to assist communication between the Central Processing Unit, Computer Memory/Storage, and Input and Output Devices (that is known as peripheral devices). The I/O subsystem includes disc controllers, tape drives, discs, system buses, and other devices. The I/O database application reads and writes drives using the operating system windows I/O.

Question

Suppose, you need to service 48 hardware interrupts on your 8086
microprocessor. Explain how many 8259 (PIC) chips you’d need to service the above number of
interrupts. Further, explain why only a total of 64 interrupts can be serviced with the help of
cascading.

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