description Learn more about: .STARTUP (32-bit MASM) title .STARTUP ms.date 11/05/2019 f1_keywords .STARTUP helpviewer_keywords .STARTUP directive ms.assetid 3ce9c878-18bf-49a0-828c-b29928ea3e54 .STARTUP (32-bit MASM) Generates program start-up code. (32-bit MASM only.) Syntax .STARTUP See also Directives reference MASM BNF Grammar