Source line

Each source statement includes one or more of the following four fields:

• a Label field,
• an Operation field,
• one or several operands, or
• a comment.

Characters on the source line may be either upper or lower case. Directives and instructions are case-insensitive, whereas symbols are case-sensitive unless the assembler option for case insensitivity on label names ( -Ci: Switch case sensitivity on label names OFF) is activated.

This section covers the following topics:

• Label field
  
• Operation field
  
• Operand Field: Addressing Modes