Let me try to explain at a basic level... Arcade games are made up of many rom chips - there could be rom chips for audio, video, logic, etc. - and the various circuits that connect them all together. The goal of MAME is to document and emulate the entire circuit, not just specific roms. So, just because a game is not working, it doesn't mean that a specific rom is bad. In this case, the instructions in the roms are correct, but the rest of the circuit emulation is not complete. In this case, there is a protection component that is not understood, so it cannot be emulated at this time. The only way to get the protection circuit emulated is to study the component and write the proper emulation for it. So, unless you can help with the decryption of the component, then you will have to wait until that work is done by someone else who has the expertise in that field. There is nothing more that can be done, so please stop trying to request workarounds just to get the game to work.
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