On Mar 12, 2007, at 3:28 AM, Johnny Billquist wrote:

> Matt Thomas wrote:
>> Completely different problem.  This was due a latent bug in the  
>> softintr
>> dispatch that was revealed by the removal of spllowersoftclock.
>
> And wasn't that a problem related to unaligned access to short  
> (byte) data? Or perhaps just a change in the storage size of the data.

No.

> Anyhow, these kinds of problems don't exist on the VAX.
> But whatever the problem was, it looks like someone (I'm guessing  
> Matt) have fixed the problem. Wonderful. callouts now work, and the  
> system is booting. What was it?

I put the cause in the commit message.  boolean inversion.