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Microelectronics - Systems and Devices by Owen Bishop

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9

Mnemonics

Summary
Short assembler programs are used to demonstrate how a CPU performs elementary tasks. The mnemonics investigated are those for arithmetic and logical operations, data transfer, branching, and bit handling.

Whatever language is used for programming, the program used by the CPU consists of a series of opcodes and operands. In an assembler program, the opcodes are represented by mnemonics. These may be divided into a number of types, according to what they do. Below we will look more closely at a few of each type of mnemonic. They are demonstrated by using them in short assembler programs. These assembler programs are written for the ‘1200’ microcontroller. Similar operations are available on all microprocessors and ...

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