INT 2F U - Microsoft Profiler (PROF.COM/VPROD.386) - ALTERNATE SEGDEBUG IFACE
        AX = 4508h
        BX = ordinal (or 0000h)
        CX = segment
        DX = instance (or 0000h)
        SI = type (or 0000h)
        ES:DI -> ASCIZ module name
Notes:  this call is an alternate entry to the profiler's SEGDEBUG
          interface, but only to function 0, for notifying the profiler of
          each new segment loaded.  The SHOWHITS utility then examines the
          profiler's output files (CSIPS.DAT and SEGENTRY.DAT) in conjunction
          with symbol files to provide information in a useful form.
        this call does not have a corresponding Windows function