I don't know how the conversion works exactly, or where it takes place,
but
the HT packet is a read or a write to 0xFD.FE00.0000 + an offset for the UnitID(pci device number). So, for device 7 on the bus and config
register
0x14, you get 0xFDFE003814. You don't have to worry about bus numbers because they get taken care of based on the HT chain the to which the
packet
is routed.
This is a memory read/write?
Yes. It's just to the reserved addresses for config space.
Myles