xf86config and Neomagic 256AV

[jvicente]

I have tried to install XFree on potato but I couldn't find my video card.
I found a Neomagic MagicGraph 128 option, but mine is 256.
Which xserver should I use? I think it should be SVGA.
Have somebody tried Framebuffer? Is it better than standard svga?
And I don't know which horizontal or vertical refresh rates I have to set.
BTW, I have a thinkpad 390E.