MASM 3.0 supports the following command line options:

/A - Writes segments in alphabetical order
/D - Creates Pass 1 listing
/E - Creates code for emulated floating-point instructions
/N - Suppresses tables in listing file
/O - Display values in octal in listing file
/R - Creates code for real floating-point instructions
/S - Writes segments in source-code order
/X - Includes false conditionals in listings

*courtesy of Vernon from pcdosretro