May 2024
Intermediate to advanced
665 pages
23h 2m
English
book
The X86 Microprocessors: Architecture and Programming (8086 to Pentium), 1st Edition
by Lyla B. Das
Content preview from The X86 Microprocessors: Architecture and Programming (8086 to Pentium), 1st Edition
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80186 – THE EMBEDDED MICROPROCESSOR 495
e interrupt controller operates in two modes – the master and the slave. In the master
mode, the interrupt control unit controls the interrupts from the on-chip peripherals (timers
and DMA units) and the four external interrupt pins. e unit synchronies and prioritizes all
interrupt sources and presents the correct interrupt vector to the CPU. Simple systems need to
use only this master mode of operation.
See Fig 14.4 of the interrupt control unit in the master mode of operation. It accepts inter-
rupts from the internal peripherals i.e., the timers and DMA unit and channels then to the
CPU.
In the slave ...
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