Int 21 Fn A0  - Attachmate Extra - Get 3270 Display State                  [I]

   AH = A0h

Return: AL = display status
       bit  7  : 0=windowed, 1=enlarged
       bits 6-3: current screen profile number 0-9
       bits 2-0: active window number
           0=PC, 1-4=host B-E, 5-6=notepad F-G
   BX = host window status (see below)
Program: Attachmate Extra is a 3270 emulator by Attachmate Corporation

See Also: AH=A1h

Bitfields for host window status:
 bit 15 reserved
 bit 14 0=host E window installed, 1=not
 bit 13 0=host E terminal on, 1=off
 bit 12 0=host E window displayed, 1=not
 bit 11 reserved
 bit 10 0=host D window installed, 1=not
 bit 9 0=host D terminal on, 1=off
 bit 8 0=host D window displayed, 1=not
 bit 7 reserved
 bit 6 0=host C window installed, 1=not
 bit 5 0=host C terminal on, 1=off
 bit 4 0=host C window displayed, 1=not
 bit 3 reserved
 bit 2 0=host B window installed, 1=not
 bit 1 0=host B terminal on, 1=off
 bit 0 0=host B window displayed, 1=not