Service manual

1-6 AlphaServer GS160/320 CPU Addition and Removal
have printouts of the SCM show fru and SRM show config commands. From
these displays one can determine the following:
• System clock speed setting
9.0 or 9.6 ns
• QBB part numbers, which indicate the size of B-cache supported
54-25043-01/02–4Mbytes
54-25045-01/02–4or8Mbytes
SCM Example
SCM_E0> show fru
FRUname E Part# Serial# Model/Other Alias/Misc
[part of display omitted]
QBB0 80 54-25045-01.C01
SM01300025 ..........
QBB0.PSM 00 54-25074-01.L01 NI94770176
QBB0.PWR 00 54-25017-01.F01 NI93970911
QBB0.AUX 00 54-25123-01.E01 NI94171051 ..........
QBB0.CPU0 00 B4166-AA.A03
SW01040057
QBB0.CPU1 00 B4166-AA.A03 SW04300330
QBB0.CPU2 00 B4166-AA.A03 SW01040058
QBB0.CPU3 00 B4166-AA.A03 SW05100041
54-25045-01.C01 is the part number for the QBB that supports the
8-Mbyte cache size.
All CPUs in QBB0 are B4166 CPUs.
SRM Example
P00>>> show config
QBB 0 Hard QBB 0
Quad Switch QSA rev 4, QSD revs 0/0/0/0
Duplicate Tag Up To 4 MB Caches DTag revs 1/1/1/1
Processor 0 CPU 0 4 MB Cache EV67 pass 2.4, 731 MHz
Processor 1 CPU 1 4 MB Cache EV67 pass 2.4, 731 MHz
Processor 2 CPU 2 4 MB Cache EV67 pass 2.4, 731 MHz
Processor 3 CPU 3 4 MB Cache EV67 pass 2.4, 731 MHz
All CPUs in QBB0 are running at 731 MHz. From this we can infer
that the system clock speed is set at 9.6 ns, since the B4125 731
MHz CPUs require the 9.6 ns system clock speed. If the display
shows a CPU running at 1001 MHz, then we know the system clock
speed is 9.0. If you see a CPU running at 940 MHz, then you can
infer that the system clock speed is 9.6.