Hello All, Now I am working on PCI. I have one board which was configured as HOST (using Jumper settings) and one board as PCI AGENT . I typed cat /proc/iomem on HOST to display at what location the HOST has configured the AGENT . I got the following output # cat iomem 80000000-9fffffff : PCI host bridge 9ff00000-9fffffff : PCI device 1057:0008 (Motorola) # As per my knowledge , The HOST has configured AGENT at 9ff00000 locations and any read/write to this location will go to the AGENT. Pls correct me if I am wrong Coming to the AGENT part, HOW to see the address at which the pci interface has been configured so that i can send the data to that address inorder to send data to HOST from AGENT. I am working with linux please Help me in this. Thanks in Advance Regards Jhoney