Int 2F/AX=1686h

DOS Protected-Mode Interface - DETECT MODE

AX = 1686h

Return:
AX = 0000h if operating in protected mode under DPMI (INT 31 available)
AX nonzero if in real/V86 mode or no DPMI (INT 31 not available)

See Also: AX=1687h

Category: DOS Extenders - Int 2Fh - D

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