Re: panic at boot on 4/200

[foo bar <tokenalt%gmail.com@localhost>]

On Thu, Jan 8, 2026 at 2:25 AM Romain Dolbeau <romain%dolbeau.org@localhost> wrote:
>
> Le jeu. 8 janv. 2026 à 05:40, foo bar <tokenalt%gmail.com@localhost> a écrit :
> > > > So after doing many test boots I've found netbsd 1.5.x will boot on it
> > > > but everything else, including sunos 4.1.1, will fail in various ways.
> (...)
> > But if it is the cache presumably
> > that would also affect 1.5.x so I don't know.
>
> When you say "everything else", did that include trying NetBSD-2.0 to
> narrow down the issue ?
> From the release note, 2.0 introduced SMP on SPARC, which /may/ have
> involved reworking the cache support a bit (for e.g. coherency).
> (Shot in the dark, and  4.1.1 was also pre-SMP support...).

From memory I tried 1.5.1, 1.5.3, 2.0, 4.0, 6.0, 8.0, 9.0, and
current. I'll retest everything when I get back to the board.

> Alternatively to support your hypothesis, maybe it's possible to run a
> newer NetBSD kernel patched and recompiled to not enable the cache?

That could work and it would probably be easier than trying to figure
out which of the 32 chips is bad.