ahh yep, I was going to ask you about that. You are in somewhat unknown territory there.. Likely not going to be easy to diagnose. A few mm of inductance in the gnd connection is enough to cause chaos at 32mhz. I had the same issue on my V2 booster.IngoQ wrote: ↑Mon Oct 09, 2017 7:28 amThere is another possibility, that my CPU-socket construction, which exposes CPU lines vertically for about 5-8mm will be of fault here. When I can rule out the SIMMs I will have to investigate this. It turned out way to high anyways, so I will have to start over with that.
Have a look at March 10 2015 post..
.. the 2 big blue-ish pcb images. A thin connection between gnd points on the CPU was all it took to be unstable.
Only other thing is to make sure P100 resistor pack is 1.2K. Its near the front of the CPU/Blitter somewhere.