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

See also: 2F4500

2F4508 - Microsoft Profiler (PROF.COM/VPROD.386) - ALTERNATE SEGDEBUG IFACE