IDE problems on Quadra 630 type machines, revisited

[John Klos <john%ziaspace.com@localhost>]

Hi,

I think I reported issues with IDE drives on a Quadra 630 a while back. 
I can access an IDE drive without problems when booted off of a SCSI 
drive, but when I try to boot directly off of the IDE drive, it panics 
after a little bit of disk access (anywhere from two to ten seconds). 
Here's a recent panic:

http://www.klos.com/~john/mac68k_panic.jpg

I retried with netbsd-5 from today and I get the same behavior. I also 
tried to see if there was any difference by adding a comm slot ethernet, 
but no difference.

Another issue is that I get a "can't allocate KPT pages" panic immediately 
after the kernel loads if I let it try to use the full 196 megs of memory. 
I've been using the Booter to set the amount to 128 megs for now.

With a current kernel from 17-March-2011, booting from IDE works, but 
after a certain amount of time I get panics which look like this:

http://www.klos.com/~john/mac68k_current_panic.jpg

The hardware has had months and months of uptime with heavy compiling and 
heavy network traffic, so while I don't have other hardware to test, I can 
say with some confidence that the hardware is happy. The IDE soft errors 
seem common regardless of what IDE drive I have installed.

Does anyone have any ideas?

Thanks,
John Klos
--
Your mother manages RSX systems in Hell!