Int 15/AH=C4h

SYSTEM - PROGRAMMABLE OPTION SELECT (PS50+)

AH = C4h
AL = subfunction
00h return base POS register address
01h enable selected slot for setup
BL = slot number (1 to 8)
02h disable setup for all slots (enable adapter)

Return:
CF set on error
DX = base POS register address (if subfunction 00h)

See Also: AH=C6h

Category: Bios - Int 15h - S

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