Assembly Language Statements

This chapter describes the assembly language statements that make up an assembly language program.

The general format of an assembly language statement is shown below. Each of the fields shown here is described in detail in one of the following sections.

[ label_field ] [ opcode_field [ operand_field ] ] [ comment_field ]

A line may contain multiple statements separated by semicolons, which may then be followed by a single comment:

[ statement [ ;statement ...] ] [ comment_field ]

The following rules apply to the use of whitespace within a statement:

Spaces or tabs are used to separate fields.
At least one space or tab must occur between the opcode field and the operand field.
Spaces may appear within the operand field.
Spaces and tabs are significant when they appear in a character string.