Re: TGX Plus on sun4c (IPX) problem

[Romain Dolbeau <romain%dolbeau.org@localhost>]

Le mar. 9 sept. 2025 à 22:36, vom513 <vom513%gmail.com@localhost> a écrit :
> Just got another TGX+.  This is specifically the 501-2955 revision.  I am trying this in my IPX.  I set “output-device screen:r1280x1024x76” - and I can tell the OBP console comes up in this res.
> However trying to boot NetBSD 10.1 - the kernel spins its numbers, and as soon as it would have started displaying boot info - the monitor resyncs (?) and the screen goes white.  No disk activity after this.  I can only assume it’s locked up.

The one recent (all is relative) change I see for the cgsix that could
be impactful is this one:
<https://github.com/NetBSD/src/commit/fad4a61deb645a59f98c7fdd2eb05e213949fef7>

IIRC, before that, TGX+ would only be seen as 2 MiB. Since, the full 4
MiB are seen.
It works fine on sun4m (SS20 for me, SS10 for you), which is probably where most
testing for TGX+ is done - I'm more sure they were ever officially
supported on sun4c.

If you can rebuild a kernel and try again, then maybe reverting this
one change is worth testing.

Cordially,

-- 
Romain Dolbeau