um the stabilize mod on css bob puffs notes were from an interum production board so the pinout is wrong I think mathy noted that on his sight with the corrections made..
Fixing Phi2, the proper way:
http://www.mathyvannisselroy.nl/blackbox.htmplease please please everybody follow this information as it is correct for the MAJORITY of boards...
the original css mod is unfortunate in that the info is correct but the atari production board it was pinned on was a very Limited run...
I have one such weird Atari with the purple jumpers... it no longer functions, I want to fix it but when people see it they say wtf is that and wash their hands of looking further. I am sure it would be simple to fix but would require too much thought and time to trace it out... every other board I have is fine works with mods no problems.... so many revisions exist and they modelled the fix on the least used revision... ah NUTZ!