[Andy Geppert] sends in his incredibly clever interactive core memory shield. In a great display of one hacker’s work being the base for another’s, [Andy] started out with [Jussi Kilpelainen]’s core ...

If you want read-only memory today, you might be tempted to use flash memory or, if you want old-school, maybe an EPROM. But there was a time when that wasn’t feasible. [Igor Brichkov] shows us how to ...