"Yes, but the author of a GPL product can provide additional licenses, and Titan could give you an OpenPCI and make it AROS PL..."
Yes, but I didn't meany Titan here. The OpenPCI SDK he sent me has include file which is/was extremly based (I could almost say copy&paste) on one of linux kernel header files. So I should rather ask there

"Well, Prometheus library allows you to have various PCI buses... and it also allows you to have various pci devices inside the same PCI card."
Can I have there a PCI device on PCI bus which contains itself an other PCI bus (accessed only through this device) to which there is connected additional PCI card providing it's own PCI bus? Mine pci classes allow that

"Couldn't you use the BIOS for that?"
AROS doesn't use BIOS except loading stage (actually it's GRUB then who does the job).
"When I load an OS on a x86 machine doesn't it use the BIOS to know how to access the PCI bus?"
Doesn't have to. There is a standard way on x86 to talk to PCI bus.
"But please, talk with Titan, try to ask him a special OpenPCI version with the AROS licence I guess He'll cooperate"
We have already chatted few months ago. Then I've decided to write pci drivers myself.
