Populating the SBC-85 1 megabit bubble memory board was straightforward, firing it up only slightly more complicated. I found that two pins on the KiCAD device I made were transposed which resulted in a tiny patch on the back. Beyond that, the system fired up and I was able to read the bootloop on the first try. There is now a great deal of work to be completed on software to avoid having to bash out one command at a time from a modified version of the SBC-85 confidence test. However, writing routines to more easily read and write to the bubble should not be too taxing, it will just take some time.
If you are interested in some more details on the project, I have it on hackaday.io or there is also a video.
As with everything for the SBC-85, the build files, documentation, and software for these boards will be uploaded when complete so you too can jump back to 1982.