Alexandre Guimaraes wrote:

>     Is it the one from www.hhdsoftware.com ?
>     I bought it quite a while ago and it is great...

Yes... Here's the link I forgot :) 

HHD Software, Serial Monitor
http://www.hhdsoftware.com/sermon.html


While getting the link from my storage, I also found this one. It does it
differently: by using two COM ports. Advantage is that it can observe the
traffic even if none of the devices is a PC and that it's cheaper,
disadvantage is that there's more hardware involved and that it's merely
external. 
http://www.haytech.com.au/ProtocolAnalyser/ProtocolAnalyser.htm

Gerhard
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