Function 31h (49)        Terminate and Stay Resident
 
    Terminates a process, but keeps a specified portion resident in
    memory.
 
       On entry:      AH         31h
                      AL         Return code
                      DX         Size of resident portion, in paragraphs
 
  --------------------------------------------------------------------------
 
    Function 31h is an enhanced version of DOS Interrupt 27h, Terminate
    and Stay Resident, that offers two extra features: It allows more than
    64K of memory to remain resident, and allows the terminating process
    to report a return code.
 
       Notes:         This function does not release any memory that was
                      allocated by the terminating process via Function
                      48h (Allocate Memory).
 
                      The return code may be retrieved by a parent process
                      via Function 4Dh, or tested by means of the
                      ERRORLEVEL feature of DOS batch processing.
 
                      Open files are not closed by this function.

Seealso:


 INT 27h 
 4Dh 
 00h 
 INT 20h