Tried running OpenBSD on an ancient Nortel Contivity 100.

The issue is that the CPU claims to support RdRand despite being a 286MHz Cyrix 
6x686MX.

So, as soon as OpenBSD tries to use that instruction for /dev/random, the 
kernel jumps into debug land with the following:

kernel: privileged instruction fault trap, code=0
Stopped at      rdrand+0x12:    %edx

I noticed that the RdRand instruction came in at OpenBSD 5.3, so I’ll try 5.2 
and see where I get. I should also mention that the only serial terminal I have 
right now is a Casio Cassiopeia running Windows CE 2.11, so I can’t save the 
full boot log yet.

The question I have is can I disable the random number generator’s use of that 
instruction? I’d rather be on -current than years old.

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