Comment by gryson

As Chris notes in the article, the 1980s "micom" history in Japan is largely undocumented (in Japanese or English), despite being a main part of the foundation of the Japanese gaming industry. There are countless undocumented games from the era, many of them being type-in programs that were printed in magazines. Thankfully, more and more of these magazines are being preserved online nowadays, making discoveries like this one possible.