Int 31 Fn 0B00  P - Dpmi 0.9+ - Set Debug Watchpoint                       [E]

   AX = 0B00h
   BX:CX = linear address
   DL = size (1,2,4 bytes)
   DH = type (00h execute, 01h write, 02h read/write)

Return: CF clear if successful
       BX = watchpoint handle
   CF set on error
       AX = error code (DPMI 1.0+) (8016h,8021h,8025h) (see #2814)

See Also: AX=0212h,AX=0601h