I'm using your ALC269 AppleHDA + IOAudioFamily with modified pinconfigs & pathmaps, it works great. I would like to try patching the stock 10.8 AppleHDA though and I'm wondering if you know what the procedure is to binary patch AppleHDA. I've tried running the command
sudo perl -pi -e 's|\x84\x19\xd4\x11|\x69\x02\xec\x10|g' AppleHDA
to no avail (I get a few sound assertions when booting and no device is recognized). I have everything else set up as in the older versions, the only other difference is that the layoutXX.xml and Platforms.xml files are now compressed into zlibs (I'm using RevoGirl's zlib compression/extraction script to edit them http://revogirl.wordpress.com/2012/04/19/applehda-for-mountain-lion-dp3/). Any help would be much appreciated.