as*   file1 (file2 . . . ) ( - option1 option2 . . . )

Where the options are:

^option^meaning^ |l|generate listing| |no|do not generate listing (default)| |cre|generate a cross reference table| |s|generate a symbol table| |c|enable cycle counting| |noc|disable cycle counting|

These options may also be supplied to the assembler by the use of the OPT directive in the source file.