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Int 10 Fn 12 - Cirrus Logic BIOS - Get User Options [V]
AH = 12h
BL = 9Ah
Return: AX = options word 1 (see below)
CX = options word 2 (see below)
See Also: AH=12h/BL=80h,AH=12h/BL=84h,AH=12h/BL=93h,AH=12h/BL=A0h
See Also: AH=12h/BL=A3h,AH=12h/BL=A4h
Bitfields for options word 1:
bits 0,1 reserved
bits 2-4 monitor type
bits 5-6 maximum vertical resolution
bits 7-9 reserved
bit 10 force 8-bit operation
bits 11-13 reserved
bit 14 vertical refresh frequency at 640x480
bit 15 reserved
Bitfields for options word 2:
bits 0-3 reserved
bits 4-5 vertical refresh frequency at 1280x1024
bits 6-10 reserved
bits 11-12 vertical refresh frequency at 800x600
bits 13-15 vertical refresh frequency at 1024x768
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