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 outportb()              Output byte to a Hardware Port (Macro)

 #include   <dos.h>

 void       outportb(port,byte);
 int        port;                        Specified port
 unsigned 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:     Nothing

   Portability:     Unique to 8086 family of processors.

   -------------------------------- Example ---------------------------------

 The following statements write a byte to port 'x'.

           #include <dos.h>     /* for outportb */
           main()
           {
               char val = 'z';
               outportb(x,val);
           }