INT 2F - Communicating Applications Specification - MOVE RECEIVED FILE
        AX = CB14h
        BX = event handle
        CX = receive file number
             0001h first received file
             N     Nth received file
        DS:DX -> ASCIZ string specifying new name for file (must not exist)
Return: AX = 0000h successful
           < 0     error code (see AX=CB01h)