After routing a small PCB for SMD parts I realised my supplier didn't have the targeted Z80 QFP chip I was planning to use... Boring.
So I had a look for an alternative and discovered SMD Z80s come with (too) many different pinouts.
Now I have to update my schematic and reroute a board...
Meantime I've routed a board for through hole parts (at least pinout is consistent). I'm quite happy with the result as the newly designed board is just slightly bigger than the plastic module:
The replacement module tested on Trojan:
The replacement module tested on Ghosts'n Goblins:
That's great to have a solution now for those evil modules!