Assembly language

Август 11, 2022

Содержание

2. Assembly language is a machine-oriented low-level programming language. Its commands directly correspond to individual machine commands
3. The ability to make full use of all the features of the hardware platform allows, theoretically,
4. A skilled programmer, as a rule, is able to significantly optimize a program compared to a
5. The ability to directly access the hardware, and in particular the input-output port, a specific memory
6. hardware drivers and the core of the operating system (at least the machine-dependent subsystems of the
7. programs that must be stored in ROM of a limited volume and / or run on
8. Due to the machine orientation (“low level”) of the assembly language, it is more difficult for
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Assembly language is a machine-oriented low-level programming language. Its commands directly

correspond to individual machine commands or their sequences.

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The ability to make full use of all the features of

the hardware platform allows, theoretically, to write the fastest and most compact code possible for this processor.

Advantage

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A skilled programmer, as a rule, is able to significantly optimize

a program compared to a translator from a high-level language in one or several parameters and create a code close to Pareto optimal.
due to a more rational use of processor resources
due to manual optimization of calculations, the code size can be reduced and the program speed can be increased.

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The ability to directly access the hardware, and in particular the

input-output port, a specific memory addresses, CPU registers

512-byte assembly language game

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hardware drivers and the core of the operating system (at least

the machine-dependent subsystems of the core of the OS), when it is important to temporarily coordinate the operation of peripheral devices with the central processor;

Using assembler has virtually no alternative when creating:

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programs that must be stored in ROM of a limited volume

and / or run on devices with limited performance (“firmware” of computers and various electronic devices);
platform-specific components of compilers and interpreters of high-level languages, system libraries and code that implements platform compatibility.

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Due to the machine orientation (“low level”) of the assembly language,

it is more difficult for a person to read and understand a program on it compared to high-level programming languages.
A program in assembly language consists of very "small" elements - machine instructions, respectively, the volume of the program in the commands is proportionally larger.
Programming and debugging are becoming more complicated, the complexity and probability of introducing errors are growing.

Limitations