Quote Originally Posted by Breetai View Post
My Famicom RF switch is a new style automatic one, just like the one that came with the American NES. It's not the original Famicom RF switch. The original one is like this:

Yep, that's the one that came with the system (and the one I have).

Unfortunately, I couldn't find a picture of the SG-1000 or Mark III RF switch. I would assume that they're both manual.
It looks just like any manual TV/GAME switchbox that came with any system from that era, it just says "SEGA" on it instead of Atari, Coleco, etc.

Do you really think they needs the manual switchbox?
For the SG-1000...yes. It came with a manual switchbox (like all systems did circa 1983) and I can't imagine that it would work with an auto RF switch, as other systems from that time period (Atari 2600, ColecoVision, etc.) do not.

With the Mark III...maybe not. Although it came with a manual switch, the Master System (which is nearly identical) did not...it came with an auto switch like the NES. I'll have to dig out my SMS RF switch and see if my Mark III works with it. I presume that it will, although I've never tried it.

How about the Mega Drive controllers not working properly with it?
Although Mega Drive/Genesis controllers seem to work on the Master System (with most games), they do not appear to work on the earlier Sega systems. I just tried a Genesis controller on my Mark III to confirm this. The control pad only functions partially (up/down works but left/right does not) and while button A operates the first fire button, none of the other buttons correspond to the second fire button (I tried both three and six-button Genny pads).