Int 11 Fn 77  - Rainbowfax V1.3 - Sfengine Api - Operational Control       [F]

   AH = 77h
   AL = subfunction
       01h request SFENGINE start

       Return: AX = 0001h
       02h check if SFENGINE started

       Return: AX = 0000h or 0001h
       03h request SFENGINE stop

       Return: AX = 0001h
       04h check if SFENGINE stopped

       Return: AX = 0000h or 0001h
       05h installation check

       Return: AX = 0001h
       06h uninstall???
       BX:DX -> return address for successful uninstall???

       Return: (at caller's address)
           AX = 0000h
       else

       Return: AX = FFFFh (invalid subfunction)

Return: ES:DX -> ASCIZ signature string "SFAX ENGINE V1.0"
       followed by internal data area???

See Also: AH=78h,AH=79h,AH=7Ah,AH=7Ch
Index: installation check;RainbowFAX|installation check;SFENGINE
Index: uninstall;RainbowFAX|uninstall;SFENGINE