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The 8085 Microprocessor: Architecture, Programming and Interfacing by Umashankar B.S., Udaya Kumar K.

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23

Intel 8259A— Programmable Interrupt Controller

images Need for an interrupt controller

images Overview of the working of 8259

images Pins of 8259

images Registers used in 8259

images Interrupt request register

Interrupt mask register

In-service register

Slave register

Programming ...

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