How can I look up the AMT port IO port from windows COM3 port?

How can I look up the AMT port IO port from windows COM3 port?

Hello all, I was told this was the place to ask this sort of thing.

I want to programmatically write debugging messages to the Intel AMT virtual/fake serial port from within Intel TXT. So I can't use the AMT library.

The port shows up as COM3 in Windows (the only COM port). Is there a way to look up what the port IO port should be so I can use assembly to talk over it? I know that historically, by convention serial port 3 was at port 0x3E8, but writing to that (or any of the other conventional serial port addresses) doesn't seem to produce any output on the listening side.

Thanks in advance,

Gerri F.

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People helped me figure it out over at OSR online

http://www.osronline.com/showthread.cfm?link=247794

Thanks anyway,

Gerri F.

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