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Real-Time Embedded Systems by Xiaocong Fan

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Chapter 3

Microprocessor Primer

Abstract

The microprocessor, operating on numbers and symbols represented in the binary format, is the core of all computers and embedded systems. A microprocessor may have a von Neumann architecture or a Harvard architecture; it may run complex instructions (complex instruction set computer) or simplified instructions (reduced instruction set computer). Some microprocessors allow I/O devices to be placed in their memory address space, where I/O devices and memory components are indistinguishable to the processor. Some microprocessors may feature a separate I/O address space, where I/O devices are treated differently from normal memory locations. As case studies, we examine key features implemented in Microchip ...

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