I no longer have the PCB to take pics of, sorry.
The board in the picture is the more complicated of the two IIRC. It has many, many non-memory chips on it. Sub-processors or protection, I dunno, and I've no idea if they're the same as on other PGM boards - I never bothered to check Dodonpachi2, and didn't own any others.
I suppose if you wanted to do some testing you could get yourself a modern Cave PCB, most of their post-DDP2 shmups used the PGM hardware in a single-PCB configuration.