20 Aug
2007
20 Aug
'07
10:47 p.m.
The 8548 CDS doesn't have PCI2 exposed. PCI1 is routed through the PCI edge connector. PCIe is routed through the slot on the opposite side of the card. There's no room for PCI2, so it's orphaned. On the 8555, PCI2 is routed to where the PCIe slot is on 8548.
Suffice it to say, if you want to use PCI2 on 8548, you'll need to devise your own memory map. The PCI2_IO is probably left over from porting the CDS from the 8555/8541 to the 8548. I will look into cleaning up the comments in that file to reflect reality. :)
Andy