I've hacked the 3-in-1 ROM to autoboot Saint Seiya. I'm currently figuring on getting the rest of the two games work in standalone form.
Currently the NESDev Wiki doesn't have any info on this particular mapper, but it seems to write to $B000 when selecting the other two games, which I assume it's switching the outer bank of the ROM.
[EDIT: Attachment removed. Download NewRisingSun's extract instead. ]