/w        Generation of warning messages

          /w-[warnclass]
          /w+[warnclass]

          The /w option controls which warning messages are emitted by Turbo
          Assembler.

          If you specify /w by itself, "mild" warnings are enabled. Mild
          warnings merely indicate that you can improve some aspect of
          your code's efficiency.

          If you specify /w- without warnclass, all warnings are disabled.
          If you follow /w- with warnclass, only that warning is disabled.

          Each warning message has a three-letter identifier; refer to
          WARN for a list of warnclasses.


          If you specify /w+ without warnclass, all warnings are enabled.
          If you specify /w+ with warnclass from the preceding list, only
          that warning will be enabled.

          By default, Turbo Assembler first starts assembling your file
          with all warnings enabled except the inefficient code-generation
          (ICG) and the write-to-memory in protected mode (PRO) warnings.

          You can use the WARN and NOWARN directives within your source
          file to control whether a particular warning is allowed for a
          certain range of source lines.


          Example:      TASM /w TEST1

          The following statement in TEST1.ASM issues a warning message
          that would not have appeared without the /w option:

             mov bx,ABC ; Inefficient code generation warning
             ABC = 1


          With the command line   TASM /w-OVF TEST2

          no warnings are generated if TEST2.ASM contains

             dw  1000h * 20h