NMI on boot

["P T Withington" <ptw@callitrope.com>]

I have a DECServer 5200 dual-processor machine that I just brought up OpenBSD 2.5 on.  (I know dual-processor is not supported, but I got this for a steal.  I'd rather run OpenBSD on 1 cpu than learn another O/S.  I'd be willing to help out in any way to push multi-cpu support forward by testing stuff on this machine.)

But my question today:  Occasionally on boot I drop into the debugger because of an NMI right after the network is enabled.  Any clues as to how to debug this would be appreciated.  Any insights on the various "not configured" messages would also be appreciated.

Thanks,

--ptw

[output from dmesg]

OpenBSD 2.5 (fat-albert) #1: Thu Oct  7 07:58:30 EDT 1999
    ptw@fat-albert:/fat-albert
cpu0: Intel Pentium II ("GenuineIntel" 686-class, 512KB L2 cache) 266 MHz
cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SYS,MTRR,PGE,MCA,CMOV,MMX
BIOS mem  = 654336 conventional, 66060288 extended
real mem  = 66715648
avail mem = 59621376
using 840 buffers containing 3440640 bytes of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(1c) BIOS, date 06/19/98
bios0: diskinfo 0xf03c000c cksumlen 1 memmap 0xf03c0088
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82441FX PCI/Memory (PMC)" rev 0x02
"Intel 82375EB PCI-EISA" rev 0x15 at pci0 dev 7 function 0 not configured
ppb0 at pci0 dev 17 function 0 "DEC DECchip 21150 PCI-PCI" rev 0x03
pci1 at ppb0 bus 1
de0 at pci1 dev 13 function 0 "DEC DECchip 21142/3" rev 0x30: irq 10
de0: DEC 21143 [10-100Mb/s] pass 3.0 address 00:00:f8:7c:31:3a
ahc0 at pci1 dev 14 function 0 "Adaptec AIC-7880" rev 0x00: irq 14
ahc0: aic7880 Wide Channel, SCSI Id=7, 16 SCBs
scsibus0 at ahc0: 16 targets
ahc0: target 0 synchronous at 10.0MHz, offset = 0xf
sd0 at scsibus0 targ 0 lun 0: <SEAGATE, ST15150N, 0023> SCSI2 0/direct fixed
sd0: 4095MB, 3712 cyl, 21 head, 107 sec, 512 bytes/sec, 8388315 sec total
ahc0: target 5 synchronous at 10.0MHz, offset = 0x8
cd0 at scsibus0 targ 5 lun 0: <TOSHIBA, CD-ROM XM-5701TA, 0557> SCSI2 5/cdrom removable
ahc1 at pci1 dev 15 function 0 "Adaptec AIC-7880" rev 0x00: irq 11
ahc1: aic7880 Wide Channel, SCSI Id=7, 16 SCBs
scsibus1 at ahc1: 16 targets
"S3 Trio32/64" rev 0x54 at pci0 dev 18 function 0 not configured
eisa0 at mainbus0
eisa0: can't map I/O space for slot 7
isa0 at mainbus0
isadma0 at isa0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
sysbeep0 at pcppi0
lpt0 at isa0 port 0x378-0x37b irq 7
npx0 at isa0 port 0xf0-0xff: using exception 16
pccom0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, 16 byte fifo
pccom1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, 16 byte fifo
vt0 at isa0 port 0x60-0x6f irq 1: S3 765 (Trio64 V+), 80 col, color, 8 scr, mf2-kbd
pms0 at vt0 irq 12
fdc0 at isa0 port 0x3f0-0x3f5 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
biomask 4840 netmask 4c40 ttymask 5cc2
root on sd0a
pctr: 686-class user-level performance counters enabled
Kernelized RAIDframe activated
dkcsum: sd0 matched BIOS disk 80
rootdev=0x400 rrootdev=0xd00 rawdev=0xd02
de0: enabling 10baseT port
NMI ... going to debugger