The weird model of the sega genesis: the wondermega

[Sonic the Dutch hedgehog]

So a few days ago i saw a video about an sega system i never heard of before called the wondermega it was released in 1992 ( in japan) and was called the x’eye in north america for some reason now about the system itself its an combined sega mega drive and an sega cd thats all the infomation i know about it.

 

[faith]

Here's a real interesting fact about the Wondermega, it has a couple of undocumented BIOS functions that are only present in it (WONDERREQ and WONDERCHK). I don't really know what they do myself, but @LazloPsylus probably does.

 

[LazloPsylus]

Yeah... I have documentation on it somewhere in my archives. I'll see what I can dig out. It's a bizarre bit of modifications. One is basically just a confirmation of whether the system is a Wondermega or not.

 

[Rivet]

Someone who goes by SUDDENﾃﾞｽ has been doing some research into an interesting feature of the Wondermega. Just the first model (I could be wrong) has a MIDI port on the back of the console, and only one game was ever made to use said feature. Here's some videos of his research:

 

[BinBowie]

Another interesting thing about the Wondermega is that it has a MIDI-out jack on the back. What exactly it's for, I don't recall, but I remember someone was messing with the MIDI functionality on the Sonic Retro forums a while back.

Edit: Got ninja'd by Rivet. Disregard my post.