Here is a program I wrote several years ago that shows ASCII, hex and dec for everything transmitted and received and shows non printable characters as their common listings ie < CR >< LF >< STX >...

I was actually considering some updates for it this last week like the ability to send a counter and easily send time/date, increase ports from 8 to 256..., but I think I lost the original form source files. I'll have to look in a few other places or I might have to start from scratch. If I find it or redo it, I'll post the vb files for anyone else to modify for their needs

It was 17k bytes too large to upload , so here is a link
http://www.matko.com/Downloads/appli...m%20Viewer.zip