Switch on back of SuperGrafx for?

[monads]

What is that small little switch for?  It's either in the I or II position.  Anyone know?

[PCEngineFX]

The switch on the back of the SuperGrafx selects either PC-Engine compatibility mode or native SuperGrafx mode.  The switch was put there to support PC-Engine games that accessed the Video Display Controller in a certain fashion (I'm not sure how...I'm not THAT geeky

[monads]

So which position should it be in?  Or does it even matter since I don't have that display controller?   Currently it's set in the I position, and I can play SuperGrafx and PC engine games.  

btw, congrats on your acquistion of terraforming.

[PCEngineFX]

Oh, the display controller is one of the chips inside of the unit...not an external device.  I think you would only see a difference if you had a game that was PCE/SG compatible (there are a few of those), but as for what the switch should be at, either one should be fine unless you see some weird video distortion going on.

[Nutribrain]

If you own Darius Plus which is a SGX/PCE Hybrid cart, you could try the different positions. The difference between SGX and the PCE when running this game is that the sprites flicker way more on a PCE than a SGX, at least when you fight the level-boss.