question already...on the back, WHICH pin is this green trace running to? the left or right side of where it is? And can I get a higher res on the top of the board view and each side of those support chips. The directions say on U1 pin 2 need to be a jumper..I don't see that on this photo view..it looks like pin 3 is jumpered..that's why I may need higher res.
I'm sorry, I can't provide any higher res of this unit as it is not mine nor in my possession.
The green wire runs through the hole and from what I can make of it ties into the first pin on the stacked 138's on the right of the cru selector switch.
Keep in mind that these extra wires were added to support the stacking of the memory chips, so you have to be sure the base first layer is connected correctly, according to the guide, then follow the directions in the guide for the stacking process, per layer.
If you click on the photo in Atariage a pop up will open of that photo in a it's true size, and you can see the detail somewhat better.
Hope this helps, and if anyone else has better information please chime in. Thanks