Some time ago it was debate here about what hw could be used for
debugging kernel... Here's what I built:
8 leds connected to paralel port, so what goes on hw port 378 can be
easily seen. (Actually they are 12, but 4 remaining due not shine too
much - not worth that work).
I make them display stage of kernel booting, and after bootup low bits
of PID of current process. You can see _much_ of what happens on such
lights!
And now questions:
1) How many other similar devices are out there? [Something similar is
put on port 0x80, I saw something similar on sun 4/330 - do newer suns
have this?]
2) I would like some led to indicate ppp & eth0 activity. Where should
I add a hook?
Pavel
-- I'm really pavel@atrey.karlin.mff.cuni.cz. Pavel Look at http://atrey.karlin.mff.cuni.cz/~pavel/ ;-).