Can't enable DMA mode with JMicron controller

Working with this 975x is like pulling teeth. 
Why does the secondary PATA port have to be the Jmicron POS?!  How can I get it to just use the intel controller?
DMA won't work for my DVD drive hooked up to the secondary ATA.  I have it set to DMA if available, and it keeps using PIO mode.

Quote from: dejanos on 21-November-06, 21:28:38
I suggest that you read all other post about the JMicron issues where lots of things are explained .We have already discussed about showing DMA under SCSI.SCSI doesn't inform you about the DMA.It simply works,or not.
So it's that simple,if your DVD/RW drive read an burn fast, then everything is OK. Don't worry about the DMA.
Yes, I can confirm that also, for what it is worth. I set up my new board some days ago but hadn't really tested the DVD drive yet. Although I felt and suspected everything was normal, I was very concerned after seeing and reading the problem threads on these boards. I have now tested it with a full 4.7GB burn and it took 13-14 minutes on a 4x DVD+RW, which is completely normal. Also, on checking the Nero log I see it reports "DMA: OFF" which is clearly false, but which a lot of people are complaining/worried about. Copying between hard drives (see specs) 'seems' to go at the right speed too. Windows reports 2 minutes when I dragged 3.12Gb across (quick test to see time although I cancelled it half way - not sure of the maths but seems about right from experience)
Obviously Nero (and probably other applications) are NOT able to detect the true access mode of IDE drives under the JMicron controller.
My specs:
P965 Neo-F
2x512MB Corsair 533Mhz
Asus 7600GT
320Gb SataII Western Digital (JMicron)
IDE:
Lite-On SHW-160H6S DVD (master)
200GB (slave) Spinpoint
Bios: 1.5; JMicron: supplied CD - 1.7.1.0 from device manager

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