INT 22 - DOS 1+ - PROGRAM TERMINATION ADDRESS
specifies the address of the routine which is to be given control after
a program is terminated; should never be called directly, since it does not
point at an interrupt handler
Notes:  this vector is restored from the DWORD at offset 0Ah in the PSP during
termination, and then a FAR JMP is performed to the address in INT 22
normally points at the instruction immediately following INT 21/AH=4Bh
call which loaded the current program
SeeAlso: INT 21/AH=00h,INT 21/AH=31h,INT 21/AH=4Ch

See also: 20

22 - DOS 1+ - PROGRAM TERMINATION ADDRESS