Int 21 Fn 37A2  - Xpack V1.52+ - Get Tsr Status                            [k]

   AX = 37A2h
   BX = 6A6Dh ('jm')

Return: AX = 0000h (successful)
   DL = status (01h active, 00h disabled)

See Also: AX=37A3h/BX=6A6Dh