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Int 10 Fn 12 - Cirrus Logic BIOS V3.02 - Inquire Options [-]
AH = 12h
BL = 84h
Return: AX = user options word (see below)
See Also: AH=12h/BL=89h,AH=12h/BL=8Ah,AH=12h/BL=8Bh,AH=12h/BL=8Ch,AH=12h/BL=8Fh
See Also: AH=12h/BL=90h,AH=12h/BL=9Ah
Bitfields for user options word:
bits 1,0 centering
00 vertical centered, 01 from bottom, 10 from top, 11 reserved
bits 3,2 720-dot fix-up options
00 OR every 8th and 9th pixel
01 display MGA mode from left
10 display MGA mode from right
11 skip every 9th pixel
bit 4 ???
bits 7-5 video mode
001 CGA
010 MGA
011 EGA
100 VGA
bit 8 external monitor enabled instead of LCD panel
bit 9 vertical expand mode enabled
bit 10 8-bit mode instead of 16-bit mode
bit 11 normal video rather than reverse video (for LCD)
bit 12 attribute automap rather than attribute emulation
bit 13 bold mode disabled (default)
bit 14 fast bandwidth
bit 15 ???
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