I dumped the roms and identified them with MAME, this is actually a Knights of Valour Super Heroes (KOVSH) PCB.
I also checked that the ICs are fed with 3.3V (kind of...)
To do a DDP DOJ conversion you need :
ddp_doj_u1.bin - program on U10 (27c322) - (get a dump from another convert, you can...