Int 15 Fn 0D  - Vmix - "sys_spawn" - Start A Child Process Job Shell       [O]

   AH = 0Dh
   STACK:  DWORD   ASCIZ string starting with requested I/O channel and
           followed by standard VMiX shell command string

Return: AX = process ID or error code "SYS_ERROR"

Note:  the maximum string length is 7Fh characters

See Also: AH=0Eh"VMIX",AH=11h"VMiX",INT 21/AH=4Bh