Re: Sun4/110 "Panic: Crazy Interrupts"

[Samuel Furtaw <samfurtaw%gmail.com@localhost>]

Hello!

I've just tried out this patch - my P4 register reads value 0x41ffff20.

We do get slightly further now. After cgfour and sparcvme load up, the
screen blanks. I've been working on hooking up a serial terminal to
try and get debug output, but no luck so far.

Thanks,
Samuel



On Tue, May 7, 2024 at 2:51 AM Julian Coleman <jdc%coris.org.uk@localhost> wrote:
>
> Hi,
>
> > I'm not sure exactly how (if at all) these commands translate into
> > Sunmon commands... not having access to OpenBoot in the PROM does
> > impact my options a little. I will see if I can find a resource on how
> > this could be done from SunOS 4 since I'm not sure Sunmon can do this
> > at all.
>
> No problem, it was an idea to try to see some of the properties of the
> framebuffer.  It should be possible from SunOS, but I have a few more
> guesses left on how to get things working!
>
> > No rush on the 4/330 though - this is my hobby project after all! I
> > appreciate all the help from you folks on the SPARC mailing list.
>
> It's holiday here, so I had a bit of time to look again :-)  The attached
> patch should print out the real value of the P4 register before and after
> trying to disable interrupts.  The colour map handling is commented out,
> because we know that it's not working.  I also added (I hope) an interrupt
> handler that will catch the interrupts at level 4 and ignore them (it will
> increment a counter though).
>
> Regards,
>
> Julian