I have just come up with an idea that will cost the price of a couple of ZIF sockets and the inverter as that is more or less what I saved them for.
Your host machine would need a parallel port to talk to a Z80 PIO.
The programmer is untested but does have locally generated programming voltage.
I have already posted photos.
https://www.vintage-radio.net/forum/...d.php?t=173983