I have found a PCB with an Exerion Clone (?) or Prototype (?). Game title is IRION. See the attached pictures.
Anyone seen this before ?
The PCB looks different to the 2 PCBs I know of, the Jaleco 1-board and the 2-board versions.
The PCB seems to be limited in comparison to the Jaleco boards.
Gameplay is only different by the not moving background. Otherwise the game seems to be the same.
It shows "---S 1983 11---" instead of the "(C) 1983 Jaleco" string.
I have not seen this to be emulated in MAME in version 0.192.