Thanks for your infamous guide Leppy - much appreciated.
It was the blueprint for many a base install. I had issues, but they were finally resolved, so I'm giving back my working solution without too much explanation (seeing as it was pure trial and error).
Hi there all D620 GMA950 (27A2) owners,
I have uploaded an Extra folder.
It has all the goodies needed for 10.6 up to version 10.6.8 (tested from 10.6.6) on Dell Latitude D620 GMA950 (27A2 only).
Simply including this folder at the drive root + AsereBLN bootloader, Voodoo HDA, Voodoo PS2 keyboard and trackpad will give you a very sweet system. Read the blurb below for more info.
Note (just in case): Lion install is not possible on many D620's without upgrading the CPU.
It may show as Core2Duo, but it's really only a CoreDuo (32bit).
Use CPU-X to find actual CPU model.
~≈ D620 GMA950 (27A2) + MacOS X Snow Leopard 10.6.8 ≈~
This is an Extra folder packed with solutions* to get a Dell D620, running Snow Leopard 10.6.6 thru 10.6.8, to have working GMA950 27A2 card. ie. it probably won't work with GMA950 27AE, and definitely not NVIDIA X3100. It has worked on most Dell D620's (GMA950 27A2), though there was this one..
If you install MacOS 10.6.8 / 7 / 6 (possibly earlier) to an external device on another Mac, all you need to do is drop this folder in, then install AsereBLN (or MultiBeast) to the device.
You will then have a bootable Dell D620 to install / clone to.
EFI string for GMA950 in boot.plist
GMA950 ROM file
com.apple.boot.plist with many tweaks
kexts carefully selected for 10.6.8 on D620
ps. I have been told that later Chameleon versions will further improve the system (if that's possible).
I have been cautious to try, but will resume experimentation shortly and post my findings.