option-masm.md

description	title	ms.date	f1_keywords	helpviewer_keywords
Learn more about: the OPTION directive	OPTION (MASM)	09/21/2021	option	OPTION directive

OPTION

Enables and disables features of the assembler.

Syntax

OPTION option-list

Remarks

Available options include:

:::row::: :::column span=""::: AVXENCODING
CASEMAP
DOTNAME
NODOTNAME
EMULATOR
NOEMULATOR
EPILOGUE
EXPR16 :::column-end::: :::column span=""::: EXPR32
LANGUAGE
LJMP
NOLJMP
M510
NOM510
NOKEYWORD :::column-end::: :::column span=""::: NOSIGNEXTEND
OFFSET
OLDMACROS
NOOLDMACROS
OLDSTRUCTS
NOOLDSTRUCTS
PROC :::column-end::: :::column span=""::: PROLOGUE
READONLY
NOREADONLY
SCOPED
NOSCOPED
SEGMENT
SETIF2 :::column-end::: :::row-end:::

The OPTION AVXENCODING directive is available in Visual Studio 2019 version 16.7 and later.

See also

Directives reference
MASM BNF Grammar