Installation on 6.0 on these platforms (and, I suspect, all other Neomagic 128ZV platforms) fails to get a working X server. The graphics driver isn't even detected in an unaccellerated mode. Copying the /etc/X11/XF86Config file from a previous installation of Precision Insight's NM driver fixes the problem.
I have not been able to get this to fail on several laptops that we have installed to using the Neomagic chipsets. Sometimes the Xconfigurator does not probe your chipset properly if it has a strange bios or pci subsystem and manual choices must be made.