[johnnym]

There might be some confusion about what systems OpenBSD/sgi runs on. So let me clarify that by citing "official" information from the intro(4/sgi) manpage of OpenBSD/sgi 6.9:

[...]
HARDWARE

The following systems are supported:

Hardware Family Kernel Model
IP20     IP20   IP22   Indigo (R4k)
IP22     IP22   IP22   Indigo2, Challenge M (R4k)
IP24     IP22   IP22   Indy*, Challenge S
IP26     IP22   IP26   POWER Indigo2 (R8000)
IP27     IP27   IP27   Origin 2x00, Onyx 2
IP28     IP22   IP28   POWER Indigo2 (R10000)*
IP29     IP27   IP27   Origin 200
IP30     IP30   IP30   Octane*, Octane 2* (Speedracer)
IP31     IP27   IP27   Origin 200*/2x00, Onyx 2 (250+ MHz)
IP32     IP32   IP32   O2*, O2+ (Moosehead)
IP34     IP35   IP27   Fuel (Asterix)
IP35     IP35   IP27   Origin 3x00, Onyx 3x000, Onyx 3
IP39     IP35   IP27   Onyx 4
IP45     IP35   IP27   Origin 300, Onyx 300
IP53     IP35   IP27   Origin 350, Onyx 350, Tezro
IP59     IP35   IP27   Origin 350, Onyx 350, Tezro (1GHz)
[...]

I can confirm the principle working of the systems marked with a * - these are the systems I have at hand and tested so far - for OpenBSD/sgi up to 7.3 with the exception of Indy and R10000 Indigo² for which I try to track down the problem cause. For the Indy I could already clarify that the issue detected for OpenBSD/sgi 7.3 is not new but present in all versions since 6.9 (and maybe even earlier), see https://github.com/the-machine-hall/open...1494425202 for details.

I provide kernels for all of the above listed systems on GitHub and those can be easily tested by netbooting them from the PROM on the respective system.