Just realized hornet hardware uses the same setup also. Using Gradius 4 as an example I changed the irq timer to 5 micro seconds which syncs it up with the original recording posted here: http://mametesters.org/view.php?id=3275 (in the current build the announcer says "gradius 4" at the wrong point).
This is the same timing thrill drive and gti club use so I think I've found the sweet spot.
Still not 100% sure on the envelopes though. Now I listen to it side by side with the original recording it's obvious the decay and release were turned right up as the reverb effect isn't working so it sounded closer to the real thing (though caused other more intrusive problems, gticlub skid sound looping for example). It looks like reverb effects aren't hooked up yet and that's a bit beyond my scope.
It does sound better IMHO, though maybe a little empty without reverb.
I'll post a diff in a bit, it'd be good if someone can look at it and make sure it's ok.
http://www.youtube.com/retrorepair
Edited by RetroRepair (01/27/13 02:11 PM)
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