Int 2F Fn CA01  - Tbscanx - Get Status                                     [v]

   AX = CA01h

Return: AH = BCD version number (v2.2+)
      = CAh for versions before 2.2
   AL = state (00h = disabled, 01h = enabled)
   CX = number of signatures which will be searched
---v2.0---
   BX = EMS handle, 0000h if not using EMS
---v2.3+---
   BX = segment of swap area, 0000h if not swapped
   DX = EMS or XMS handle (XMS handle if BX=0000h), FFFFh if not using EMS

See Also: AX=CA02h