This book came up when I was searching for games for one of the early portable systems (can't remember which) but the search result portrayed itself like this book might be a catch all with programming/source code for lots of vintage systems. Does anyone have a copy of this book? I can't find any good samples of what it would contain. If it covers multiple systems from the era with code and internals, etc it sounds like a great read but since I can't tell and I'm not really wanting to buy it that blindly I thought I'd ask.