Re: Mac mini as "MAME Console"

I played around with the SDL source (Darwin joystick code) last night 
and can see a pretty easy fix for the calibration issue (i.e. that you 
need to re-calibrate all the time.) I did a quick, hack fix that just 
sets specific initial values (no doubt only appropriate for the Belkin 
Nostromo n45) for the minimum and maximum of each axis during the 
initialization, and, viola, no more calibration necessary! The real fix 
will be to let the usual calibration happen and save to disk the 
recorded min/max values of those axis if they change, reloading them at 
the next initialization. Re-calibration would be done simply by tossing 
the recorded values out (which gives a use for the "Calibration" menu 
item in AdvanceMAME, etc, that currently does nothing on the Mac).

Also I think I understand why the hatswitch on this gamepad isn't 
working and can probably fix that too, but I need to research it some 
more - the HID stuff is a bit confusing to me. I suspect what's 
happening is that during initialization the hatswitch is being reported 
as a type that the code is filtering out as not being a control, so it 
never gets set up. Probably just need to figure out what type it is 
reporting itself as and let that type through.

I'm pretty decided on taking up this project if for nothing else than 
self-education/entertainment purposes. Having other significant 
(non-coding) projects to work on and given my rusty C skills and lack 
of Mac and MAME/SDL programming experience, development on this will no 
doubt be excruciatingly slow! At my $50 biweekly Mac mini savings plan 
rate, it will be at least until June before I can even test the thing 
out for real anyway! :)

Steve



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