Int 10 Fn 6F01  - Video - Video7 Vga,vega Vga,hp Ex-bios - Get Monitor In  [V]

   AX = 6F01h

Return: AL = monitor type code (HP,VEGA VGA only) (see #0120)
   AH = status register information (see #0121)
   CL = current value of Extended Control register (HP Ext BIOS, and only
       if AL=41h) (see #0122)

Notes: bits 0-3 are the same as the EGA/VGA status register bits 0-3
   supported by original HP Vectra AT and by ES/QS/RS series Vectras

(Table 0120)
Values for monitor type code (HP Extended BIOS):
 00h   non-HP card with ROM and possibly its own INT 10h driver
 41h   MultiMode video display adapter
 42h-44h reserved
 45h   industry standard monochrome display adapter
 46h   industry standard color display adapter
 51h   reserved

Bitfields for status register information:
Bit(s) Description (Table 0121)
 0 display enable
   0 = display enabled
   1 = vertical or horizontal retrace in progress
 1 light pen flip flop set
 2 light pen switch activated
 3 vertical sync
 4 monitor resolution
   0 = high resolution (>200 lines)
   1 = low resolution (<=200 lines)
 5 display type (0 = color, 1 = monochrome)
 6,7   diagnostic bits

Note:  bits 0-3 are the same as the EGA/VGA status register bits 0-3