Re: 2.1.119 on alpha

[Stephen Williams <steve icarus com>]

rth@cygnus.com said:
> Jay just got back from vacation and mentioned that the PC164 has
> broken interrupt hardware, in that it cannot mask interrupts.  So if
> you don't get the device to shut up, you'll continually get sent back
> to the interrupt handler.

I've sure seen my share of interrupt locks on my i960rp based system.
First thing I would do is probe (logic probe will do) the IRQA# lines
of all the PCI cards, 'cause they are easy. It gets harder after that,
because probing for any interrupt source on the base board requires a
bit more knowledge of the motherboard then I have. Schematics would be
really nice:-)

(Yes, I *do* debug my software with a 'scope and logic analyzer. Doesn't
everybody?-)

If I have time this weekend I will see what I can figure out. I have the
hardware tools to check PCI slots, and *might* be able to track down
some other potential interrupt sources as well.
-- 
Steve Williams                "The woods are lovely, dark and deep.
steve@icarus.com              But I have promises to keep,
steve@picturel.com            and lines to code before I sleep,
http://www.picturel.com       And lines to code before I sleep."