Routing is progressing, but not as fast as I would hope. Originally I thought that I could simply follow 90% of the routing on the original board. But since there are a few major changes, like the type of RAM and the addition of some components for video and power supply decoupling, this soon became impossible.

So I decide to let that go, and just route as I (and the Kicad router) think is best. Which still means a lot of work.

In the meantime I finally ordered the 'Jupiter ACE - FORTH programming' book by Steven Vickers.

Very nice to have at least the original manual for my computer, even though this computer itself is still in the future.