[MiNT] XDD implementation questions (joystick driver)

[Peter Persson <pep.fishmoose@home.se>]

Howdy,

I'm writing an basic joystick driver similar to the one in Linux. It 
already works for non-blocking accesses, it's event based, and it allows 
any number of axes & buttons. Currently, it only supports joysticks on 
the enhanced joystick ports on the falcon/ste. The current version is 
written in assembler, but I might rewrite it in C later on (I guess I 
should, right?).

I haven't really done anything like this before, and I'm not sure how 
everything should be implemented. Please excuse my ignorance if the 
answers to my questions are obvious.

1. Can I use Xbios in an XDD?
2. I want to implement blocking reads. How is this supposed to work? If 
I just wait until I have a new joystick packet available to the calling 
process, I halt all other processes too. This is not the way to do it, 
right?
3. Select & Unselect - What the heck is this, and should I implement it?

I also wonder if this is the kind of API people want, or if I should go 
for something else.

best regards

-- Peter Persson