I created a wiki (based on the GamekingII one) so we can put on there all the information we find:
http://mp4.itram.es/wiki
The Sunplus section can be found here:
http://mp4.itram.es/wiki/spmp305x/
Everyone can edit, so add whatever information you find..
Beerzerk, do you give me permission to copy your tutorial on the wiki? (giving you credit, of course). It's better written than the one I made (and I think you based yours on mine, at least the VDK part
)