[rescue] Dataram 64mb sbus ram expansion

[foo bar]

On Thu, Feb 13, 2025 at 11:57 PM Dave McGuire via rescue
<rescue at sunhelp.org> wrote:
>
> On 2/13/25 22:45, Henry Bent via rescue wrote:
> >     BUT the big surprise that I had forgotten I had was a Dataram 64mb
> >     sbus memory expansion (with the all important ribbon cable) from a
> >     long gone IPX.
> >
> > I had never seen one of these before.  Apparently they're only for the
> > SS2 and IPX, and require additional power from a special motherboard
> > connector.
>
>    That's not additional power, it's a set of signals.  On the SS2
> schematic, that connector is referred to as the "hypothetical memory
> expansion connector", and carries some select lines and I believe an
> additional address bit.
>
>    I don't recall if the SS1/SS1+ motherboard has this connector or not.

The 1/1+/IPC all have an 8 pin connector in roughly the same place as
the 2/IPX, no idea what signals are on them tho. Also where are the
SS2 schematics available?