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Microprocessor & Interfacing Lecture 6
8085 Instruction Set--1
E C S D E P A R T M E N T
D R O N A C H A R Y A C O L L E G E O F E N G I N E E R I N G
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Contents
Introduction
Instruction Set
Classification
Data Transfer instructions
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Introduction
An instruction is the pattern which is used by
microprocessor. In 8085 instruction is the combination of
opcode and operand.
Here opcode is the operation code and operand is the data.
And instruction length could be one byte, two byte and
three byte.
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Instruction Set
An instruction is a binary pattern designed inside a microprocessor to perform a specific function.
The entire group of instructions that a microprocessor supports is called Instruction Set.
8085 has 246 instructions.
Each instruction is represented by an 8-bit binary value.
These 8-bits of binary value is called Op-Code or instruction byte.
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Classification of Instruction Set
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Data Transfer Instruction
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