Help with Asus P2B-D and Adaptec AAA-131U2 RAID Controller

[legendma]

I'm having a problem getting my Adaptec AAA-131U2 RAID controller working in a Asus P2B-D at 133mhz FSB. Once the Adaptec Bios pops up, I get a dma bus master error and something about the memory controller on the RAID card. Does anyone if the PCI divider on the Asus P2B-D v1.06 D03 is 1/3 or 1/4?

If I run the system at 100mhz FSB, I have no problem at all only at 133mhz FSB. To me seems the PCI divider is 1/3 at 133mhz FSB. Anyone can confirm. I've got the latest version of the board Asus P2B-D v1.06 D03 and the latest bios on the Adaptec RAID card.

Would really appreciate anyones help. Thanks..

legendma@hotmail.com

 

[trungma]

The Asus P2B-D uses Intel's BX chipset. Sorry to say this but the BX chipset only supports 1/3 divider for the PCI bus and 2/3 divider for the AGP bus. I would have to agree that your PCI bus is running way to fast for your Raid controller. Not many PCI cards can run at 44.3MHz reliably. That Adaptec Raid card is quite expensive, I would just pick up a new motherboard with Intel's 815E chipset. The 815E chipset will give you 1/4 PCI divider and 1/2 AGP divider.