NadaNet uses pushbutton1

[Martin Doherty <martin.doherty@undisclosed.com>]

Michael,

I was just taking my second look at the NadaNet resources on your 
website.  I note that the protocol uses Annunciator 1 and Button 1.  Is 
that as in Button 0, 1, 2? Is there some reason why you selected Button 
1 instead of 2?

I ask because I was imagining a NadaNet app or game that made use of 
joystick input (Buttons 0 & 1) and it seems to me that this would cause 
a conflict with NadaNet comms.

Martin