Int 10 Fn 1E01  - Video - Flat-panel - Lcd/crt Display Control             [V]

   AX = 1E01h
   BH = function
       bit 7: =1 set display control, =0 query control
       bits 6-0: reserved (0)
   ---if BH bit 7 set---
   BL = new display combination (see #0052)

Return: AL = 1Eh if function supported
       BH = results
       bit 7: query/set (copied from input)
       bits 6-3: reserved (0)
       bit 2: simultaneous display is supported by hardware
       bit 1: LCD/CRT display control supported by hardware
       bit 0: set operation was successful (always clear on get)
       BL = active display combination (see #0052)

See Also: AX=1E00h,AX=1E02h

Bitfields for Flat-Panel display combination:
Bit(s) Description (Table 0052)
 7-2   reserved (0)
 1-0   combination
   00 reserved
   01 LCD active
   10 CRT active
   11 both LCD and CRT active (simultaneous display)

See Also: #0053