It's now July 2020 and Alan Paton has redesigned the 80 Column VDU card, I have built it so we are both running a typical CP/M system of the time. Alan also revamped the Programmable Graphics Card. I likewise followed and built it. Now a new body has come along and is getting some proper PCB's made for these, they may also be of interest to many other Z80 users with a memory mapped display. I think the PCB's are being made in China, so it may be a little time to testing, etc. Will keep you informed...... Mel.
I hope you are all well and keeping safe, in these difficult times.