Ok, I've found the PCI configuration space (I was fooled by the fact
that SEGA has set a different VID/DID in the EEPROM), so I guess I
should just make a proper PCI bus implementation and use if_rtk_pci.
There is one problem though.  There is only 32K of DMA space available
(AFAICT, PCI DMA goes to an embedded memory in the PCI bridge chip),
and the rtl81x9reg.h has a hardcoded RX buffer size of 64K.  Clearly
this must be changed to 16K or 8K for the Dreamcast.  Any ideas on a
nice way to do this?


  // Marcus