INT 62 u - FGDRIVER v3.03 - "FG_WAITFOR" - DELAY FOR SPECIFIED DURATION
        AX = 00ACh
        BX = duration in clock ticks
Return: after delay elapses
Note:   For FGDRIVER v1.10, this function was unused; "FG_WAITFOR" was AX=0096h
SeeAlso: AX=009Fh,INT 1A/AX=FF01h

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