[UNMAMED]

Bubble Trouble (Namco [system 2], 92)
Probably no dump exists.
Why they're not emulated (Phil S):
The slow progress is because of the complexity of CPU emulation.
There are 4 CPUs (2x68000, 6809E, 68705MCU). CPU communication vis shared RAM
and interrupt interaction needs to be worked out before these games will all work,
moreover there looks to be some protection to get around as well. 
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