In terms of usability, including a default NVRAM would be a good feature on some systems. In order to play “Super Gran Safari” I had to look at the driver source for the init sequence, but even knowing it, it isn’t easy to enter it an make it work (I ended up calling Roberto Fresca for some help... just for starting a game!).
There are some more games that need weird init sequences for creating the default nvram. I highly doubt the PCBs were sold to operators without the nvram already initialized.
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