Generates machine code according to values of literals and symbols.Finally, converts the opcode into the corresponding numeric opcode.Also, processes the pseudo instructions.keep the record of the location counter.Symbol table and opcode tables are defined.And then in the second step, they generate the machine code using these tables. These assemblers first process the assembly code and store values in the opcode table and symbol table. These assemblers perform the whole conversion of assembly code to machine code in one go. On the basis of a number of phases used to convert to machine code, assemblers have two types: 1. Types of AssemblerĪssemblers generate instruction. Here, ADD is the mnemonic that tells the processor that it has to perform additional function. Programmers use them to remember the operations in assembly language. The symbolic representation of the opcode (machine level instruction) is called mnemonics. An opcode basically gives information about the particular instruction. Mostly, programmers use high-level languages but, when more specific code is required, assembly language is used. We can create an assembly language code using a compiler or, a programmer can write it directly. On the other hand, the assembly language is close to a machine language but has a simpler language and code.

The machine language only consists of 0s and 1s therefore, it is difficult to write a program in it. It gives instructions to the processors for different tasks. 4 Frequently Asked Questions (FAQs) What is an Assembly Language?Īn assembly language is a low-level language.

8086 microprocessor assembler software