AH = FFh DH = 0Ch DL = ??? (00h or 01h) Return:CF clear if successful AL = previous value of ??? CF set on error (DL out of range) AX = FFFFh
Return:CF clear if successful AL = previous value of ??? CF set on error (DL out of range) AX = FFFFh
Category: DOS Extenders - Int 21h - R