enhancement: 68040 support and 1 MB roms

[kramlat]

would be nice to see Snow support the entire 68k line, running system software 1.0 all the way up to mac-os 8.1.

[Alessandro1970]

Support for Macintosh Quadra 900
Could be the best to support all last 68k
applications…

[dingusdev]

Macdat has schematics on the Quadra machines too, with detailed notes on how each of the components is connected.