[c0pperdragon] set himself the task of designing a very capable 8-bit CPU using just 74HC type logic chips on a large plug-in breadboard. To emphasize the “bread” theme, he put the whole thing ...

It sounds like he didn’t finish it, but he found the old boards and decided to recreate it on a breadboard. Like many computers of the day, the machine had a cassette interface. We really like ...