3 ms·Know of but don’t (yet) own. Strong recommendation?by klelatti 3y agoKnow of but don’t (yet) own. Strong recommendation?nickt 3y agoI like it. It’s bottom-up, and I’d go as far as saying it’s the definitive book on the Speccy ULA. http://www.zxdesign.info/book/ http://www.zxdesign.info/book/klelatti 3y agoI’ll add it to my wish list!