OSDev.org

Hi,

I have written a pci device detection function. It is able to detect the IDE controller successfully, but the BAR0 to BAR3 values that I got are all zero. BAR4 value is 0xc001 .

Is this normal? I suppose I should get values like 0x1f0 and 0x3f0.

Regards,
Jen Foong

Backwards compatibility ports are never listed by a PCI device (other than guessing their presence from class:subclass). Devices just listen to them and there's often little you can do about it.