Jason Thorpe wrote:
> 
>  > So, how do I work out what interrupt it's generating?  I'm
>  > reasonably sure that the vector I'm supplying (0x28) in the
>  > vector register is right for IPL4, but I don't get any
>  > output from the printf in a handler attached to ipl4.
> 
> Hmm, interesting.  I'd think that if you're not servicing it you'd at
> least get "spurious interrupt" messages... UNLESS it's coming in at
> ipl 6 ... which is hard-coded as the clock interrupt handler... all
> inlined in locore.s ...

Yes, I don't know why it wasn't giving me them before, but more
printfs and some LED fiddling got me past that.  Now I have too
many interrupts and need to turn the rotten things off!

Speaking of LEDs, any reason why I shouldn't use one of the
'hidden' LEDs for frodo-chip activity?

> Jason R. Thorpe                                       thorpej@nas.nasa.gov

--
Mike Smith  *BSD hack  Unix hardware collector
The question "why are the fundamental laws of nature mathematical"
invites the trivial response "because we define as fundamental those
laws which are mathematical".  Paul Davies, _The_Mind_of_God_