Place the following files in this folder:

karateda.rom
karatedo.rom
karatevs.rom
kchamp.rom
kchamp2p.rom
kchamptec.rom
kchampvs.rom
kchampvs2.rom
kchampvs3.rom
kchampvs4.rom

These files are generated using the mra tool in:
https://github.com/sebdel/mra-tools-c/tree/master/release

Check out the short tutorial in:
https://github.com/jotego/jtbin/wiki/Analogue-Pocket-Cores

DISCLAIMER: This PocketFPGA core is licensed to be used only
with legally owned dumps of videogame data. It is also licensed
to be used with freeware (homebrew) compatible with the platform.
