INT 15 - Olivetti Quaderno - GET ???
        AX = 44C3h
Return: DH = bitfields
            bits 0,1: "tres complique"
            bits 2-4: zero
            bits 5-7: bits 5-7 read from I/O port 351h
        DL = value read from I/O port 350h
Note:   this function is also supported by XBIOS.COM
SeeAlso: AX=44C2h,AX=44C9h

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