[rescue] Sun2 P2 termination

[Dan Moisa]

Is there a different framebuffer card for the older backplanes, or does it
just get double-terminated?

On Mon, Sep 28, 2026, 06:12 Romain Dolbeau via rescue <rescue at sunhelp.org>
wrote:

> Le lun. 28 sept. 2026 à 15:04, Dave McGuire via rescue
> <rescue at sunhelp.org> a écrit :
> >    From dusty memory I'm pretty sure the P2 termination is provided by
> > the framebuffer in older Sun2 backplanes, and on the backplane itself
> > for later ones.
>
> That's also what the Sun Hardware FAQ part 4 implies
> (<https://www.sunhelp.org/faq/sunref4.html>):
>
> >501-1003        monochrome video/keyboard/mouse TTL only Multibus
> >(...)
> >        This board must be placed in a slot in the Multibus P2
> >        section shared by the CPU. For backplane P/N 501-1090, it must
> >        be placed in slot 6 to terminate the P2 bus; for newer
> >        backplanes, it is usually placed in slot 6 anyway.
>
> Cordially,
>
> --
> Romain Dolbeau
>
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> rescue list - http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org
>
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