ATT's 3270 SNA Card - Help!

[James Cummings]

	Help!....I've been given a project to write a 'C' language program
in an AT&T 3B2/700 that is supposed to interact with an IBM 3090 via an
AT&T 3270 Emulator+ SNA card.  The application in the IBM is an IMS 
application sent to the 3B2 via VTAM.  
	I've written such an application before without problems, but at that
time we used a protocol converter attached to one of the tty ports...no
problem there...now we've gotten fancy with a 3270 card.  My problem is
the API and HLLAPI calls that are essential to addressing the card.  At
best (and maybe this is just my age showing) the AT&T documentation for 
the SNA package is cryptic.  It seems when I begin chasing down the 
procedure to open up an LU and begin to interact with it...I get started
down some dead end.  Everything makes sense to a point then ATT leaves 
you hanging.

	If anyone knows of a good book that deals with this software or has
any experience with writing such code, I would REALLY appreciate hearing
from them.

								James Cummings
							....attctc!dlss2!james