what is port 80h in PC?

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Pinczakko

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port 80h

I wonder what this port is for (port 80h) in PC architecture ? is it a debug port ? I mean used for debugging purposes using a POST (power On Self Test) diagnostic card ?
 

port 80h card

The port 80 seems not to be a physical port in a PC, but to be a TCP/UDP port used by the HTTP protocol.
 

i/o port 80h

Port 80h is the hardware debug I/O port.

Power On Self Test (POST) sends results for each test in coded form to port 80h.
 

House_Cat said:
Port 80h is the hardware debug I/O port.

Power On Self Test (POST) sends results for each test in coded form to port 80h.
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hmm... really interesting, can you please explain more on this. And is this port is the one which is used by a "special card" called the POST card as I mentioned above?
 


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