interpret tn3270 data-stream

Hi

I am supposed to write an TN3270 screen-scraper / pilot application
that shall extract information from a tn3270 server, but I have
problems understanding how to interpret the data-stream the server
sends back to me.

What I basically need is to know how I can transform the data stream
to an array of arrays (24x80) where all the white chars are converted
to spaces and the visible chars are placed where they are appearing on
the screen!

Can anyone recommend some (free) documentation where I can learn how
to do that? Or giving me some pointers what I should do!

The first bytes I receive from the server are:

05 C7 1D F8 3C 40 4F 40


thank you for any help at all!


.

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