On Mar 8, 2017, at 1:09 PM, <b...@blit.ca> <b...@blit.ca> wrote:

> It's been a long time since I had the Cube open so this is from memory.  
> However, I'm reasonably sure that this was based off a NeXT card (whose name 
> escapes me) that was half bus interface and half prototype board so that you 
> could build one-off interfaces.  I originally bought the Cube as surplus from 
> the University of Waterloo, so I'm guessing that it's an interface to some 
> piece of lab equipment.
> 
> Here's a slightly blurry picture of the Cube's back:
> 
>    https://drive.google.com/file/d/0B0Sme9n3mG2UYUxuVWZ2eXhfS2M/view
> 
> The Mystery Board occupies the leftmost slot (IIRC).

        Now that is interesting! I concur completely, this does not look 
anything like my NeXTDimension. But it looks from the outside as though you 
have not one but two boards on the left side. My cube originally had only the 
board on the right of your picture (and in that same location). Unless there 
are internal connections between the two slots on the left side, you may have 
two Mystery Boards. 

        Very neat! I hope we get to hear more about this system eventually.
                                                                - Mark

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