HP Model 715/100 - Workstation, Handbook

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4–26 Troubleshooting
Determining the Faulty SIMM Pair
The address given by the System Responder Address is given as if the memory is
contiguous, even though empty slots are permitted. Memory boards are installed in
pairs of the same memory capacity. The operating system starts mapping memory at
Pair 3, if it exists. In other words, it maps starting with the highest numbered pair
through to the Pair 0. To determine the faulty pair of SIMMs, perform the following
steps.
1.
Using Table 4–8, determine the HEX value address range for each SIMM pair
in the system.
Table 4–8. Memory Address Ranges
Pair Memory Address Range
(3 thru 0) Size (MB)
______ 0–8 0x00000000 – 0x007FFFFF
______ 8–16 0x00800000 – 0x00FFFFFF
______ 16–24 0x01000000 – 0x017FFFFF
______ 24–32 0x01800000 – 0x01FFFFFF
______ 32–40 0x02000000 – 0x027FFFFF
______ 40–48 0x02800000 – 0x02FFFFFF
______ 48–56 0x03000000 – 0x037FFFFF
______ 56–64 0x03800000 – 0x03FFFFFF
______ 64–72 0x04000000 – 0x047FFFFF
______ 72–80 0x04800000 – 0x04FFFFFF
______ 80–88 0x05000000 – 0x057FFFFF
______ 88–96 0x05800000 – 0x05FFFFFF
______ 96–104 0x06000000 – 0x067FFFFF
______ 104–112 0x06800000 – 0x06FFFFFF
______ 112–120 0x07000000 – 0x077FFFFF
______ 120–128 0x07800000 – 0x07FFFFFF
______ 128–136 0x08000000 – 0x087FFFFF
______ 136–144 0x08800000 – 0x08FFFFFF
______ 144–152 0x09000000 – 0x097FFFFF
______ 152–160 0x09800000 – 0x09FFFFFF
______ 160–168 0x0A000000 – 0x0A7FFFFF
______ 168–176 0x0A800000 – 0x0AFFFFFF
______ 176–184 0x0B000000 – 0x0B7FFFFF
______ 184–192 0x0B800000 – 0x0BFFFFFF
______ 192–208 0x0C000000 – 0x0CFFFFFF
______ 208–224 0x0D000000 – 0x0DFFFFFF
______ 224–240 0x0E000000 – 0x0EFFFFFF
______ 240–256 0x0F000000 – 0x0FFFFFFF
For example, if the system configuration is:
Pair 3: 32 MB SIMMs = 64 MB total for pair
Pair 2 16 MB SIMMS = 32 MB total for pair
Pair 1: 32 MB SIMMs = 64 MB total for pair
Pair 0: 8 MB SIMMs = 16 MB total for pair