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outportb()               Output to a Hardware Port

 #include   <dos.h>

 void       outportb(port,byte);
 int        port;                        Specified port
 char       byte;                        Byte to be output

    outportb() is a macro that writes the byte given by 'byte' to the
    output port specified by 'port'.

    Returns:    There is no return value.