Sorry it has taken me so long to post the results, but a big job broke out over the weekend. Here goes
01620005
No noticable change
01620006
Gives pinwheel no HD activity, I gave up after a few minutes.
01620007
Code:
consider RebuildOfprelinkedKernel com.apple.kext.OSvKernDSPLib triggered rebuild
Hard disk light flashes periodically, appears to have locked up.
01660000
No difference ... until
after a few minutes, screen clears to black with a pixel falling from the upper centre to the centre of the screen. No response.
01660001
Leaves console much earlier than usual at
Code:
Sound assertion in AppleHDACodecGeneric at line 370
Goes straight to 'fail' screen. As above, but pixel now about half an inch in from left edge.
01660002
stops at
Code:
Sound assertion in AppleHDACodecGeneric at line 370
01660003
Gives pointer, but returns to console with
Code:
kernel:stampWait:Overflowed checking for stamp 0x5c on MAIN ring
kernel:timestamp = 0x0034
kernel:GPU hang:
kernel: Trying to restart GPU...
01660004
Fails after printing
Code:
Sound assertion in AppleHDACodecGeneric at line 370
twice.
01660008 and 01660009
Code:
ethernet MAC address: 00:00:00:00:00:00
ip address:0.0.0.0
Waiting for remote debugger device
kdp_poll:L no debugger device
0166000A
Same as 01660003
0166000B
Same as above, but displays error from 01660003 three times before displaying the 'fail' screen. The console appears occasionally afterwards, but returns to fail screen.
As a side effect, the Ethernet now no longer works. It insists that the cable is unplugged, despite being plugged in.
I'm beginning to wonder if this CPU is faulty...