OSI fun as part of Retrochallenge

Hi, I realise not everyone on this list is into events like this but I must admit to having fun exploring my OSI C4P as part of this competition. Some classiccmp people have already helped me with this (e.g. Dave, Philip Lord) and progress thus far has been good. Anyway, I thought I'd post the link showing the sequence of events here for those who might be interested (warning..it's long and will get longer). http://www.classic-computers.org.nz/blog/2014-06-30-fixing-C4P-ram-expansio… When I started this project, I had some difficulty figuring out those jumpers on the 527 RAM board. By chance, I was flipping through "The first book of the Ohio Scientific Computer" last night and lo and behold, there was a few pages devoted to this. However, these pages were not mentioned in the index, which is why I missed it! In fact, there is a whole section missing from the index! Had I known that section was there it would have saved me much head-scratching. Gotta love OSI's rough and ready documentation! Terry (Tez)