Hi, here is some basic information.
1. The 5200B only supplies a PCI bus at 66 or 33MHz.
2. Off the shelf PCI at 66MHz are not available. Thus, the EFIKA uses the AGP slot in PCI mode. We mechanically bridge the AGP to PCI. 66MHz is the smallest common denominator (AGPx1).
3. The HAL/OF on the board can handle the x86 BIOS just fine. We manage this today with the PegasosPPC/ODW and all the ATI cards we have shipped therein. We have also ported the HAL/OF to PowerPC based platforms beyond our own.
The good news is that XGI has released the source code to Genesi and going ahead both 2D and 3D will be supported. For XGI, it is good for them as they won't need to support different firmware for different boards. They will just focus on the HAL/OF.
Hope that helps.
R&B
P.S. Remember the EFIKA v2.0 has the XGI chip equivalent and the Altera FPGA. The 5200B EFIKA seen
here is a software development platform and a reference design. We will be releasing the EFIKA design through Power.org soon.