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AX = BF03h BX = 0000h
Return:
BH = active monitor (00h = external, 01h = internal, 03h both, 04h neither) BL = master mode (see #00211) CH = ASIC type and version 00h (reserved, very early Compaq VGCs) 31h if QVision VGA CL = switchable VDU modes supported (see #00212) DH = internal monitor type (see #00213) DL = external monitor type (see #00213)
See Also: AX=1A00h - AX=BF00h - AX=BF01h - AX=BF02h -
(Table 00211) Values for Compaq video master mode: 00h switchable VDU not present 04h CGA 05h EGA 07h MDA 08h switchable LCD controller present 09h plasma VGA 0Ah TFT (active-matrix) VGA
Bitfields for Compaq switchable VDU modes support: Bit(s) Description (Table 00212) 0 CGA supported 1,2 reserved (1) 3 MDA supported 4 BitBLT engine available 5 132-column support availble 6 640x480x256 mode available 7 8-bit DAC mode available
(Table 00213) Values for Compaq monitor type: 00h none 01h dual-mode monitor 02h 5153 RGB monitor (RGBI 16-color) 03h Compaq Color monitor 04h 640x400 flat panel (Plasma CGA) 05h VGC monochrome 06h VGC color 07h 8-level mono LCD VGA (internal). 1024x768 mono VGA (external) 08h 16-level mono plasma VGA (internal). 1024x768 color VGA (external) 09h 4-level mono LCD CGA 0Ah 16-level mono LCD VGA 0Bh active-matrix color VGA 0Ch active-matrix mono VGA 0Dh STN color VGA
Category: Vendor-specific BIOS Extensions - Int 10h - V
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