Do you know if this customer would be willing to share? It seems that customizing the game list would be much simpler that building the whole thing (presumably largely changing the titles + jump targets). Also personally I'll be very happy with this customer's list (I don't need it to be the perfect list)THIS!
Plus, you need to be a 68K ASM guru to code your own PickNMix. The current hack was done with the aid of the debugger under MAME! Not for the faint of heart. It's not worth the trouble, unless you want to make your own for yourself (like 1 of my customers did)
I would like to create a PICKnMIX version with your cart. Could it be easy for you to create a list with the ROMs used in the correct order that you add and the address where the ROMs start, and if there are extra ROMs like MS Turbo or new games added with the name? Something like this:I found 2 different PickNmix hacks for UNIBIOS online. You can look at how they work and see if it's something you're willing to do:
https://github.com/zardam/ub_vortex_multicart
https://github.com/kuzearcade/ub_vortex_multicart/
I received the cart a couple of weeks ago. I had a problem with my MVS boards, but leonk helped me and gave me support. Finally, all works great with the all-in-one.
Thank you!