Assembly Archives - Microsystems

ADD Instruction in Intel 8051 (MCS-51) Microcontroller

Feb 17, 2024

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The ADD instruction tells the microcontroller’s CPU to add the source byte to register A and put the result in register A. Recall, A is the accumulator register typically used for all arithmetic and logic instructions. The ADD instruction is usually in the following form: ADD A, source ; ADD the source operand to the…

6 Types of Microprocessor Addressing Modes

Jan 9, 2024

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John Mulindi

in Programming Microprocessors

Microprocessors perform operations on data stored in the register or memory. This data is specified in the operand field of the instruction. The data can be specified in various ways as direct data value or stored in some register or memory location, and so forth. These are referred to as the addressing modes of the…

The MOV Instruction in Intel 8051 (MCS-51) Microcontroller

Jan 8, 2024

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by

John Mulindi

in Programming Microcontrollers

The MOV instruction tells the CPU to move (in actual fact COPY) the source operand to the destination operand. Programming in assembly language requires that at least you understand the architecture of the microprocessor or microcontroller you are working with; this means that we need to be well-versed with things like registers in that specific…

Basic Microprocessor Instructions

Jan 5, 2024

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John Mulindi

in Programming Microprocessors

Microprocessors perform various basic operations that include data transfer instructions, arithmetic instructions, logic instructions, control transfer instructions and machine control operations. This set of commands (instructions set) used to control the functions of a microprocessor is specific to a given microprocessor. In this article, we look at examples of these instructions focusing on Intel 8085…

An Overview of Assembly Language for Programming Microcontrollers

Jan 2, 2024

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by

John Mulindi

in Programming Microcontrollers

Introduction Software is the term used for the instructions that tells a microprocessor or microcontroller what to do. The collections of instructions that a microprocessor will recognize is its instruction set. The form of the instruction set depends on the microprocessor focused on. Microprocessors operate in binary code. The instructions written in binary code are…

Tag: Assembly

ADD Instruction in Intel 8051 (MCS-51) Microcontroller

6 Types of Microprocessor Addressing Modes

The MOV Instruction in Intel 8051 (MCS-51) Microcontroller

Basic Microprocessor Instructions

An Overview of Assembly Language for Programming Microcontrollers