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Options 7090 / 7091 / 7092

370-4289	370-4237	370-4281
128MB 3.3V ECC PC133 SDRAM DIMM X1/V100 Option 7090	256MB 3.3V ECC PC133 SDRAM DIMM X1/V100 Option 7091	512MB 3.3V ECC PC133 SDRAM DIMM V100 Only Option 7092

Address Generation Logic Memory Mapping

Identical Size DIMMs Example

Mixed Size DIMMs Example

Memory Notes

1. The memory installation sequence is Slot 3, 2, 1, and 0.
2. Each DIMM slot addresses 512MB with 400MB and 500MHz UltraSPARC IIe.
3. Each DIMM slot addresses 1GB with 550MHz and 650MHz UltraSPARC IIi.
4. When equal size DIMMs are installed, the lowest slot number is mapped to the lowest address range.
5. When mixed size DIMMs are installed, the slot number with the largest size DIMM is mapped to the lowest address range.
6. Memory bus speed is set by OBP during initialization and is a ratio of the CPU clock frequency.

References

1. Netra X1 Server Documentation.
2. Sun Fire V100 Server Documentation.