2 System Board
Devices on the SM Bus
Devices on the SM Bus
Device | SM Bus Address |
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PIIX4 SM Bus Master | 10 |
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Serial EEPROM | A8, AA, AC, AE |
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LM75 | 90 |
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SDRAM slot 1 | A0 |
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SDRAM slot 2 | A2 |
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SDRAM slot 3 | A4 |
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PLL | D2 |
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The System Management (SM) bus is used to monitor several of the hardware functions (such as voltage levels, temperature, fan speed, DIMM presence and type) of the system board. It is controlled by the SM bus controller located in the PIIX4 chip.
Serial EEPROM
This is the
When installing a new system board, the Serial EEPROM will have a blank serial number field. This will be detected automatically by the BIOS, which will then prompt the user for the serial number which is printed on the identification label on the back of the PC Workstation.
The computer uses 4 Kbit of Serial EEPROM implemented within a single 512 K ✕
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