Enabling DMA with new MB

[David Baron <d_baron@012.net.il>]

After  my old far-eastern MB died, replaced with an "aopen" MB with a somewhat 
faster 600mhz PIII slot-1 CPU (I was running my old 500mhz PIII and 575).

Went through all the BIOS setups. A master-DMA can be enabled but the DMA on 
the IDEs seems unavailable. Have it all "auto" -- BIOS choices for the IDEs 
are "auto", p0, p1, p2 , p3, p4 and udma "auto" or disabled. Hdparm will not 
allow -d1 either.

Other info:
~$ dmesg | grep DMA6b (rev 12) ID
  DMA             0 ->     4096
  DMA zone: 56 pages used for memmap
  DMA zone: 0 pages reserved
  DMA zone: 4040 pages, LIFO batch:0
Activating ISA DMA hang workarounds.
VP_IDE: VIA vt82c596b (rev 12) IDE UDMA66 controller on pci0000:00:07.1

~$ dmesg | grep IDE
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
Probing IDE interface ide0...
Probing IDE interface ide1...
VP_IDE: IDE controller at PCI slot 0000:00:07.1
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt82c596b (rev 12) IDE UDMA66 controller on pci0000:00:07.1
VP_IDE: port 0x01f0 already claimed by ide0
VP_IDE: port 0x0170 already claimed by ide1
VP_IDE: neither IDE port enabled (BIOS)

(this last item could be it? Saw nothing in BIOS setup. The MB has VIA chips, 
apparently)

Any ideas and help greatly appreciated. Google was not so informative.