Product Fault Management,
Continued
Interpreting
CPU
Faults Using
ANALYZE/ERROR
If the following two conditions are satisfied, the most likely FRU
is the CPU module.
!
No memory subpacket is listed in the third column of the
FLAGS register.
"
NCA_CESR register bit <09>, CP2 IO error, is equal to zero
in the KA49 register subpacket.
The example on the next page shows an abbreviated error log
with numbers to highlight the key registers.
The FLAGS register is located in the packet header, which
immediately follows the system identification header; the CESR
and DSER registers are listed under the KA49 register subpacket.
CPU errors increment a VMS global counter, which can be viewed
using the DCL command SHOW ERROR.
To determine if any resources have been disabled, for example,
if cache has been disabled for the duration of the VMS session,
examine the flags for the SYSTAT register in the packet header.
In this next example, a translation buffer data parity error
latched in the TBSTS register caused a machine check exception
error.
Continued on next page
5–70
