> there are PCI HD cards - one of them (HD4350) works for me in 33 MHz
> PCI slot. [...] Largest profit can be from testing PCIe cards. Like X1950
> or HD Northern Islands. Maybe they will not works because of Smart firmware
> initialization behind the PCI-PCIe bridge - we will see.

Wouldn't this be the same as with your PCI HD4350 where SmartFirmware doesn't work but MorphOS does? After all, it shouldn't matter whether the bridge is soldered on the graphics card itself or on an adapter the graphics card is installed to.