Assembly Language : Assembly language programs are translated into machine language instructions by an assembler, so they must be written to conform to the assembler's specification.
Statements : Programs consist of statements, one per line. Each statement is either an instruction, which the assembler translate into machine code, an assembler directive, which instructs the assembler to perform some specific task, such as allocating memory space for a variable or creating a procedure. Both instructions and directives have up to four fields.
name operation operand(s) comment
An example of instruction is
START : MOV CX,5 ;initialize counter
Here, the name field consists of the label START. The operation is MOV, the operands are CX and 5, and the comment is;initialize counter.
An example of a assembler directive is
MAIN is the name, and the operation field contain PROC. This particular directive creates a procedure called MAIN
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