Difficulty upgrading to 3.7

Hope this is the appropriate list for this. Have tried to upgrade to 
3.7 from 3.6 for a while a now. Tried booting from binary 3.7 -release 
on a CD, but repeated received

    halt code 5
    HALT instruction executed
    PC = fffffc0000230118

'ps' on this yields the results in enclosed file cdps.

I then upgraded to 3.6 -stable (thinking was next best thing) via 
source upgrade. This went well after some work. I then tried to reboot 
from CD, same error. I next downloaded the binaries to the drive and 
replaced the kernel with the new kernel and tried to reboot. That did 
not work and is where I am now. I have enclosed the results of 'trace' 
and 'ps' as instructed following the panic.

I have no idea where to go from here. Any suggestions on how to get 3.7 
installed and running??

thanks
ddb> trace
Debugger(6, fffffc0000757b88, fffffc8580007aa0, c000, ffffffffffffffff, 8) at
Debugger+0x4
panic(fffffc0000734b30, fa, fffffc00001f3ad8, fffffc00001f3adc,
fffffc00001f3ae0, fffffc00007bfd00) at panic+0x130
dec_550_intr_map(?, ?, ?, ?, ?, fffffc00007bfd00) at dec_550_intr_map+0x190
ohci_pci_attach(?, ?, ?, ?, ?, fffffc0000bfd00) at ohci_pci_attach+0x1a8
config_attach(?, ?, ?, ?, ?, fffffc0000bfd00) at config_attach+0x244
config_found_sm(?, ?, ?, ?, ?, fffffc0000bfd00) at config_found_sm+0x54
pciattach(?, ?, ?, ?, ?, fffffc0000bfd00) at pciattach+0x31c
config_attach(?, ?, ?, ?, ?, fffffc0000bfd00) at config_attach+0x244
config_found_sm(?, ?, ?, ?, ?, fffffc0000bfd00) at config_found_sm+0x54
ciaattach(?, ?, ?, ?, ?, fffffc0000bfd00) at ciaattach+0x34c
config_attach(?, ?, ?, ?, ?, fffffc0000bfd00) at config_attach+0x244
config_found_sm(?, ?, ?, ?, ?, fffffc0000bfd00) at config_found_sm+0x54
alpha_XXX_dmamap(?, ?, ?, ?, ?, fffffc0000bfd00) at alpha__XXX_dmamap+0x1c0
config_attach(?, ?, ?, ?, ?, fffffc0000bfd00) at config_attach+0x244
config_rootfound(?, ?, ?, ?, ?, fffffc0000bfd00) at config_rootfound+0x78
cpu_configure(?, ?, ?, ?, ?, fffffc0000bfd00) at cpu_configure+0x48
main(?, ?, ?, ?, ?, fffffc0000bfd00) at main+0x474
__start(?, ?, ?, ?, ?, fffffc0000bfd00) at __start+0x64
__start(?, ?, ?, ?, ?, fffffc0000bfd00) at __start+0x64
__start(?, ?, ?, ?, ?, fffffc0000bfd00) at __start+0x64
__start(?, ?, ?, ?, ?, fffffc0000bfd00) at __start+0x64
--db_more--

ps
    PID    PPID    PGRP    UID    S    FLAGS    WAIT    COMMAND
*    0      -1      0       0     7   0x80204           swapper
>>>ps
ID        PBC        PRI    CPU Time    Affinity   CPU   Program   State
0000002b  0015dac0   3             0    00000001    0         ps   running
00000029  0017dec0   5           104    00000001    0    usbd cb   waiting on
usb callback
00000017  0017a840   3             1    00000001    0      shell   ready
0000000f  00173040   5             0    ffffffff    0    rx_ewa0   waiting on
rx_isr_ewa0
00000008  00166800   3             0    00000001    0    shell_0   waiting on
rxq_ready
00000006  000315a0   6             1    ffffffff    0  tt_control  waiting on
tt_control
00000004  0002cb00   7            12    ffffffff    0      timer   waiting on
timer
00000003  0002b6a0   2         38789    ffffffff    0       poll   ready
00000002  0002a480   6             0    ffffffff    0  dead_eater  waiting on
dead_beef
00000001  00147ac0   0         60676    00000001    0       idle   ready