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Why is assembly language not portable among machines with different processors?

Why is assembly language not portable among machines with different processors?

Assembly language is not portable, because it is designed for a specific processor family. As the L1 program is running, each of its instructions could be decoded and executed by a program written in language L0. The L1 program begins running immediately, but each instruction has to be decoded before it can execute.

What programming languages are not portable?

Both machine code and assembly languages are hardware specific and not portable. This means that the machine code used to run a program on one specific computer needs to be modified to run on another computer. Portable code in a high-level language can run on multiple computer systems without modification.

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Why is assembly not portable unless you use a cross assembler?

Why is assembly not portable unless you use a cross-assembler? The processor of a machine defines the machine architecture. Each processor type has its own unique instruction set architecture (ISA). The object file is not executable yet – it needs to be linked with system libraries to produce a machine code executable.

Is assembly language still used?

Today, assembly language is still used for direct hardware manipulation, access to specialized processor instructions, or to address critical performance issues. Typical uses are device drivers, low-level embedded systems, and real-time systems.

How is assembly language different from machine language?

Machine language is the low level programming language. Machine language can only be represented by 0s and 1s. Assembly language is the more than low level and less than high-level language so it is intermediary language. Assembly languages use numbers, symbols, and abbreviations instead of 0s and 1s.

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Why are low-level languages not portable?

Because of the low (hence the word) abstraction between the language and machine language, low-level languages are sometimes described as being “close to the hardware”. Programs written in low-level languages tend to be relatively non-portable, due to being optimized for a certain type of system architecture.

Why is assembly language a low level language?

Assembly is called a low-level programming language because there’s (nearly) a one-to-one relationship between what it tells the computer to do, and what the computer does. In general, one line of an assembly program contains a maximum of one instruction for the computer.

What is difference between machine language and assembly language?

Machine language is the low level programming language. Machine language can only be represented by 0s and 1s. Assembly languages use numbers, symbols, and abbreviations instead of 0s and 1s. …

Is assembly language still relevant?

What type of errors are not detected by assemblers?

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Answer: Semantic Errors are not detected by Assemblers.