BUS reset
blah
...
cd1 detached
scsibus0 detached
txd err= 3 miss Ack err
sbp0 detached
uvm_fault(0xc08782a0, 0xdeadb000, 0, 1) -> 0xe
kernel: page fault trap, code=0
Stopped in pid 10.1 (fw0_probe) at netbsd:fw_attach_dev+0x144: cmpl % 
esi, 0x8(%ebx)
db{0}> bt / l
fw_attach_dev+0x144
fw_bus_probe_thread+0x61

show registers
ds 0x10
es 0x10
fs 0x30
gs 0x10
edi 0
esi 0xc3bb90000
ebp 0xcdd48f6c
ebx 0xdeadbeef
edx 0xc0825d20 sbp_cd
ecx 0x286
eax 0
eip 0xc05eb8fc fw_attach_dev+0x144
cs 0x8
eflags 0x10282
esp 0xcdd48f34
ss 0x10
netbsd:fw_attach_dev+0x144: cmpl %esi,0x8(%ebx)
db{0}> reboot 0x104