> Ewww.  That's not good.  A trap type 1400, as best I can tell,
> shouldn't be happening.  On the 603, 604, and 750, that's a "System
> Management" interrupt, which sounds like hardware.  

Argh! That would be bad news, I have no money today to buy another
PowerPC box :o/

> What CPU are you running?

It's a PowerComputing PowerCenter Plus. A 604 running at 180Mhz

> What does a 'trace' show after you get to the DDB prompt?

Stopped at      ddblow+0xdc:    addi r3, r1, 0x8,
db> t
saved LR(0xfffffffb) is invalid.

And whith load-base 600000 and real-base F00000, it sounds better:
db> t
at end+3d110
at config_attach+39c
at printf+c0
at end+4b96f8
at pmap_extract+64
at cpu_switch+30
at mi_switch+1ac
at ltsleep+228
at scsipi_execute_xs+e0
at scsi_scsipi_cmd+154
at scsipi_command+bc
at scsipi_inquire+7c
at scsi_probedev+d8
at scsi_probe_bus+144
at scsibus_config_interrupts+64
at config_interrupts+16c
at configure+78
at main+408
at __start+90

-- 
Emmanuel Dreyfus
UNIX *is* user friendly. It is just a bit selective about his friends
p99dreyf@criens.u-psud.fr