AS(I)                        1/15/73                        AS(I)


     as - assembler


     as [ - ] name ...


     As assembles the concatenation of the named files.   If  the

     optional  first argument - is used, all undefined symbols in

     the assembly are treated as global.

     The output of the assembly is left on the file a.out.  It is

     executable if no errors occurred during the assembly, and if

     there were no unresolved external references.


     /etc/as2        pass 2 of the assembler

     /tmp/atm[1-4]?  temporary

     a.out           object


     ld(I), nm(I), db(I), a.out(V), `UNIX Assembler Manual'.


     When an input file cannot be read, its name  followed  by  a

     question  mark is typed and assembly ceases.  When syntactic

     or semantic errors occur, a single-character  diagnostic  is

     typed out together with the line number and the file name in

     which it occurred.  Errors in pass 1 cause  cancellation  of

     pass 2.  The possible errors are:

     )  Parentheses error

     ]  Parentheses error

     <  String not terminated properly

     *  Indirection used illegally

     .  Illegal assignment to `.'

     A  Error in address

     B  Branch instruction is odd or too remote

     E  Error in expression

     F  Error in local (`f' or `b') type symbol

     G  Garbage (unknown) character

     I  End of file inside an if

     M  Multiply defined symbol as label

     O  Word quantity assembled at odd address

     P  `.' different in pass 1 and 2

     R  Relocation error

     U  Undefined symbol

     X  Syntax error


     Symbol table overflow is not checked.  x  errors  can  cause

     incorrect line numbers in following diagnostics.