On Sat, 15 Aug 2020, I wrote, incorrectly: > > I think macfb could be replaced entirely by simplefb and some nubus > drivers, now that nubus has actual drivers under the Linux driver model > (as of Linux v4.16). >
I was forgetting about palette operations. So macfb is actually required for on-board video hardware. > As of Linux v5.1 you can configure SCC IOP bypass using /dev/nvram on > 68k Macs. (I wonder whether PRAM reset would enable or disable > bypass...) > /dev/nvram functionality works on IIfx but not Quadra 900/950 models because there's no Caboose driver yet. RTC and soft power control functionality are also missing on Quadra 900/950 for the same reason.
