INT 10,1A - Video Display Combination (VGA)

AH = 1A

AL = 00 get video display combination

= 01 set video display combination

BL = active display (see table below)

BH = inactive display

on return:

AL = 1A, if a valid function was requested in AH

BL = active display (AL=00, see table below)

BH = inactive display (AL=00)

% Valid display codes:

FF Unrecognized video system

00 No display

01 MDA with monochrome display

02 CGA with color display

03 Reserved

04 EGA with color display

05 EGA with monochrome display

06 Professional graphics controller

07 VGA with analog monochrome display

08 VGA with analog color display

09 Reserved

0A MCGA with digital color display

0B MCGA with analog monochrome display

0C MCGA with analog color display

- returns value at byte 40:8A indicating display combination status

- used to detect video display capabilities