Function 4Dh (77)        Get Return Code of a Subprocess (WAIT)

Gets the return code from a terminated subprocess.

On entry:      AH         4Dh

Returns:       AX         Return code

                                                                          

This function retrieves the return code from a process that has been
terminated via Function 4Ch (EXIT) or Function 31h (Terminate and Stay
Resident). There are two parts to the information returned: AL reports
the return code issued by the terminating program itself; AH reports
the manner in which it was terminated. The possible values in AH are:

00h        normal termination
01h        terminated via Ctrl-Break or Ctrl-C
02h        terminated by DOS because of critical device error
03h        terminated via Function 31h, Terminate and Stay Resident

See also: 31h
See also: 4Ch

4Dh (77) Get Return Code of a Subprocess (WAIT)