> Hello, I have AlphaServer DS25 here.

You're a lucky man!

> According to http://www.openbsd.org/alpha.html it is an unsupported machines.

Indeed. None of the developers have access to such a machine.

> P00>>>boot eia0.0.0.8.0 -file bsd (uncompressed bsd.rd)
[...]
> jumping to bootstrap code
> 
> halted CPU 0
> 
> halt code = 2
> kernel stack not valid halt
> PC = 0               
> boot failure
> P00>>>

On these systems (as well as other *5 and *7 systems), the memory
footprint of the SRM firmware is much larger than on older alpha
systems, and the kernel overwrites the SRM image in memory, which causes
the behaviour you've seen.

> So, maybe, is there any chance to get it up & running?

By relinking the kernel at a higher address and teaching it to handle
this machine as a DS20, hardware-wise, it might work to some extent, and
then the Linux code can be used a reference to sort out the real
differences between DS20 and DS25.

> PS: in practice, what are the best supported machines in OpenBSD/alpha port?

All machines in the supported hardware list will do, although 21164- and
21264- based systems are more commonly encountered in the developer
community.

Miod

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