> Can anyone help? We're trying to talk to a RealTek RTL8139 device across
> the PCI bus, and, although linux can access configuration registers on the
> device, it does not access memory space correctly, and we are unable to
> read back any sensible values from the RTL8139 registers.
> We are using the latest 2.6 linux on an Alchemy DB1550 board.
Random reads, discarded data after writing? I had the same problem and solved
it by simply configuring the static bus controller of my Au1100 properly (of
which before I didn't even know it existed...).