Finally received my 138 in 1 Multi Cart (Blue Casing) yesterday and I immediately set about creating a dip switch similar to GadgetUK’s . Unfortunately, I was unsuccessful in being able to access anything other than KOF 2002 regardless of dip setting. I just got nothing, Kof 2002 occasionally and now and again a backup ram Error (Not related to yesterday’s concern Gadgetuk – I checked this without the cart and its fine, no errors).
I have clearly wired the thing up wrong however, holding the cable up with the wires facing me as explained by another forum user. I identified that from left to right was as follows:
Red = GND
Green = VCC
Pins 3-10 = dips
Or so I thought, but this didn’t work and gave me access to super dodgeball but mainly KOF 2002, a pink screen at one point and a backup ram error depending on the combination selected.
I then I tried the reverse:
Black= GND
Grey = VCC
Pins 3-10 = dips
Every dip combination then became only either KOF 2002 (with Graphical Errors – spotting) or a blank screen.
I’ve gone over it over and over and frustratingly I cannot work out where I’ve gone wrong.
I have VCC going to the first connection of the Resister array (10k), with each dip connecting to a separate resistor and then the corresponding dip. Ground is connected round the back to the other side of the dips. I haven’t seen the underside of GadgetUK’s switch so tried my best to put one together via the circuit diagram and his vid description….but have clearly gone wrong somewhere. Any help appreciated. As Below: