List of Conditional Assembly Directives

MPASM Assembler

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List of Conditional Assembly Directives

Directive

Description

Syntax

ELSE

Begin Alternative Assembly Block to IF

else

ENDIF

End Conditional Assembly Block

endif

ENDW

End a While Loop

endw

IF

Begin Conditionally Assembled Code Block

if <expr>

IFDEF

Execute If Symbol is Defined

ifdef <label>

IFNDEF

Execute If Symbol is Not Defined

ifndef <label>

WHILE

Perform Loop While Condition is True

while <expr>

Directive	Description	Syntax
`ELSE`	Begin Alternative Assembly Block to IF	`else`
`ENDIF`	End Conditional Assembly Block	`endif`
`ENDW`	End a While Loop	`endw`
`IF`	Begin Conditionally Assembled Code Block	`if <expr>`
`IFDEF`	Execute If Symbol is Defined	`ifdef <label>`
`IFNDEF`	Execute If Symbol is Not Defined	`ifndef <label>`
`WHILE`	Perform Loop While Condition is True	`while <expr>`

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