od (Output)

o word dword
 

The o command writes a dword to a 16-bit port address.

word
Specifies the 16-bit port address to be written to.
dword
Specifies the 32-bit value to be written to the port.

The following example writes the byte value 8000004Fh to output port 2F8h:

o 2F8 8000004F