I have not posted here in a while. Just to let you know that I'm still alive and doing things for MiST. After reaching to a hard stop on the Genesis port because we could not figured out how to fix certain things; I decided to learn more about the MiST platform and how the graphic system of classic machines worked. So I took on my fetiche game: Ghosts'n Goblins.
After a couple of months of working with the original schematics and a PCB I have now characters and scroll working on MiST. I will work on the sprites next. I think that everything will fit in the FPGA, including sound, and that it will be arcade perfect right to the clock cycle. It will be exactly as good as having the original board at home but way more comfortable to use.
You can have a look at some pics in my twitter account here
jotego / @topapate