Memory Dimm Present Detect Bits (Pd-Bits) - IBM 6C1 Service Manual
Pseries 610
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- Technical overview and introduction (40 pages) ,
- Technical overview and introduction (42 pages) ,
- Installation manual (144 pages)
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Memory DIMM Present Detect Bits (PD-Bits)
The following table expands on the Memory Error Notes found on page 126, where yy
is the PD value in the table below and xxx are the last three digits of the error code.
Use these values to identify the type of memory that generated the error.
If you replace FRUs or perform an action, and the problem is still not corrected, go to
"MAP 1540: Minimum Configuration" on page 63 unless otherwise indicated in the
tables.
Table 4. Memory DIMM PD bits
PD value
28
2A
38
3A
48
4A
58
5A
68
6A
Note: Memory DIMMs must be installed in pairs.
176
Service Guide
Size
Clock Cycle (nsecs)
512 MB
512 MB
128 MB
128 MB
64 MB
64 MB
32 MB
32 MB
256 MB
256 MB
Parity/ ECC
10
8
10
8
10
8
10
8
10
8
ECC
ECC
ECC
ECC
ECC
ECC
ECC
ECC
ECC
ECC
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