The Gamecube at first would only tell me there was no disc inserted, at which point I realized my MEGAdrive did not have any connections soldered.
After soldering P29 to GND and the two LID pads together, my GC will flash between "Please insert a NINTENDO GAMECUBE disc" and "Reading disc..." about twice per second.
This happens with both WASPs; I haven't tried the second MEGAdrive. Any clue what the problem could be?


EDIT: Redid the P29 solder connection cleanly, as well as a perfect solder job on the 2nd MEGAdrive. Still doing it.
The WASP's blue light will only flicker on for a few ms every time it flashes "Reading disc...". Otherwise it's off.