[rescue] SunOS 4.1.1_U1 source code?

[Dan Moisa]

You know how you want to change the lightbulb in the bathroom, but the door
to the basement squeaks, and when you get the WD-40 from the garage you end
up sharpening the lawnmower blades? This whole sunos compilation was
itself supposed to be a distraction as I'm taking a break from the CG4
replica...

I got fed up with trying to compile it on a real box because it's too slow.
I don't think cross-compiling will work* at the OS scale, at least not as
the starter task.
Getting TME to work on mac was a pain, and then it's slow, incompatible and
not easily changed.
There's supposedly mame support for sun3 but again with many caveats.

So I ended up writing up sun3 support in QEMU. It's working (sans disk and
video at the moment), netboots sunOS/NetBSD, is stable and much faster. I'm
working on cleaning up some AI nonsense to get it checked in.

Dan.

* though it did work for sun3 bootprom. I was also able to compile small
parts of the kernel without much trouble, will take a look at the serial
stuff.

On Tue, Apr 21, 2026 at 6:11 PM Dave McGuire via rescue <rescue at sunhelp.org>
wrote:

> On 4/21/26 20:56, Dan Moisa via rescue wrote:
> > Do we know what made it the last version to support sun3, and what got
> > dropped or became incompatible for 4.1.3?
>
>    That I do not know, but I can tell you that the 68K kvm and sys trees
> are not present.
>
> > I'm asking because we do have the source code for 4.1.3 and I'm trying
> > to get it building for real life.
>
>    Ah yes I remember that, how far have you gotten?
>
>    I myself am simply trying to recompile zs_async.c with some quick
> changes to keep it from changing the parity and bitness on serial
> consoles at boot time.  We have a couple of big Suns running at LSSM,
> whose consoles are handled through a terminal server network, and the
> parity/bits switching is a pain in the ass.
>
>    But I don't know if the driver is the same between sun3 and sun4/4c/4m.
>
>              -Dave
>
> --
> Dave McGuire, AK4HZ
> New Kensington, PA
>
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> rescue list - http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org
>
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