Embedded System Software engineering (Computer Interfacing Programmable Interrupt Controller Course
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Course
Embedded System
Institution
Cairo University
Embedded System Software engineering (Computer Interfacing Programmable Interrupt Controller Course that will help you understand this topic will and be ready for the field of the Embedded system
,Introduction
• Interrupts are essential for a processor to operate slow and time
consuming peripherals
• Processors, have a single entry for interrupt request
• Several interrupt sources exist depending on a specific computer o
hardware system
,Introduction
• It is required to expand the number of interrupt sources that can b
connected to the processor
• It is also required to prioritize these interrupts
• Control over enabling/disabling these interrupts is also required
, Programmable Interrupt Controller
• A Programmable Interrupt Controller is a chip specifically designed
perform the previously mentioned tasks, namely:
• Interrupt sources expansion
• Interrupt prioritization
• Interrupt enable/disable
• The PIC was first manufactured by Intel under the name of 8259
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