Int 10 Fn 12  - Cirrus Logic BIOS - Read Monitor Type And Id From 15-pin   [V]

   AH = 12h
   BL = A1h

Return: BH = monitor ID (see below)
   BL = monitor type (00h color, 01h grayscale, 02h no display)

See Also: AH=12h/BL=9Ah,AH=12h/BL=A2h

Values for monitor ID:
 00h-08h reserved
 09h   IBM 8604/8507 or equivalent
 0Ah   IBM 8514 or equivalent
 0Bh   IBM 8515 or equivalent
 0Dh   IBM 8503 or equivalent
 0Eh   IBM 8512/8513 or equivalent
 0Fh   no monitor