title .686P ms.date 11/05/2019 f1_keywords .686P helpviewer_keywords .686P directive ms.assetid 06d9a9bf-50b1-4eed-b4a3-86b256c71b48 .686P (32-bit MASM) Enables assembly of all instructions (including privileged) for the Pentium Pro processor. (32-bit MASM only.) Syntax .686P See also Directives Reference MASM BNF Grammar