Rock Tris by Yunsung

Pcb marked Ys-rock 940712

pcb has no sound, the osc for the msm5205 has been cut so I don't know the frequency

Pcb has no markings in the sockets and eproms have anonymous stickers

2x z80
1x 16mhz
1x UA010
1x msm5205
1x fpga
1x dipswitch (there is place for another one, but the space is empty and they jumpered the first position)