I have a P5Q (vanilla) with a Q9550 @ 3.7.
I have a retail Snow Leopard install - booting with PCEFI 10.5 (over a Chameleon R2 install).

My problem is that I have a DVD burner and an old hard disk hooked up to the Marvell IDE port of the motherboard - and with my current setup, neither of gets detected after boot.

I have tried an old kext (AppleVIAATA) from 10.5.6, but it doesn't seem to work.

What bugs me is that I have played with iPC about 6 months ago, and from that version (10.5.5?), it could see everything hooked up to my Marvell 88SE6111... I could even go as far as installing straight from the IDE DVD Drive (using iPC).

Has anybody had success with Marvell 88SE6111 IDE (ASUS P5Q) on Snow Leopard ?

try booting 32bit mode, ive got it to work there, on P5Q deluxe IDE DVD, though 64bit mode the old kext isnt compatible.

how can i setup 32bit instead of 64bit mode? Is there a kext to enable marvell ide devices? I have two dvd-writer ide...plz help me!

I've got basically the same problem which I have yet to resolve.
What really drives me nuts is that I DID have this drive working briefly under a previous install of SL which I somehow botched up and had to scrap. I thought I had all of the kexts I used saved, but I can't get any of to work this time around.

Some one, please help us!