Ok, You probably know that most/all chipset manufacturers completely disregard IDE support in their new products. You might also know that most/all oem use in-house or bought solutions for this problem, in that they have their own IDE controller or use a tested and proven one (i.e. from Sillicon Image, JMicron etc.)
I own a Asus P5KC mobo and it has the Intel P35 Chipset and the JMicron JMB363 PATA and SATA controller. It only has one IDE cotroller to which i have attached both of my optical units. The 2 HDDs i am currently using are both SATA.
I wish to use several of my other older IDE HDDs and in that sense i bought 2 PCI IDE adapter cards (the cheap kind

) one with raid and one without in case i want to go either way. Both cards i bought have (as most such cards) their own BIOS which is booted after the mobo BIOS and allows for configuration.
Now the problems start. As i said, P35 lacks IDE support, and the mobo comes with the JMicron JMB363 PATA and SATA controller whch comes with its own BIOS which is booted after the mobo BIOS. The problem is that the cards are unusable when used with the Asus P5KC motherboard. The card drivers are correctly installed and the system does detect it but it is not usable. No disk connected to it is detected and its BIOS is not booted up on system startup. There are no problems with the cards because i tested them on an older Gigabyte 8i865P-G and they run without issues.
The difference between the boards is that the older Gigabyte has an i865 chipset which has native IDE support and doesn't need a seconadary bios.
The boot sequence for the older Gigabyte board is: SYSTEM BIOS > Sillicon Image PCI-IDE BIOS > Operating System.
The boot sequence for the newer ASUS board is: SYSTEM BIOS > JMicron onboard controller BIOS > Operating System. No sight of the Silicon Image BIOS.
I do want a IDE RAID setup (i own 4 WesternDigital 300GB drives) and I am willing to pay for a more expensive and capable/premium adapter card, but i fear the issue will be repeated.
Does anyone have any insight in the issue? Has anyone used IDE/SATA PCI RAID controllers with mobos that already have a secondary BIOS for the controllers the chipset does not support.