PPC MLDL

[MeindertKuipers]

This is an ambitious project, lots of respect for the fine wire soldering!
The PPC design for the MLDL is not perfect, but close and should give some results. Make sure that you decouple the IC's.
I have built my own MLDL with the Eramco kit, and that largely follows the same principle as the PPC version. But that did not work immediately. I am currently working to reverse engineer it (create schematics from the hardware), but without at least a scope you will not be able to get it working. I remember from the Eramco MLDL that it worked suddenly when probed with a scope at some point (I put a small cap on that pin), so there is probably a critical timing condition.
First thing to check is if the timing generator creates the pulse at the right momen, and the power circuit to the Eproms is a bit tricky, some Eproms may need some time to startup.
Good luck!