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eu11

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    PCH temperature is missing (C602J PCH)

    in Hardware monitoring

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    I have a motherboard with Intel C602J PCH which has built-in temperature sensor, but PCH temperature reading is missing from the sensors tab in AIDA64.
    Multi-I/O is Nuvoton NCT5532D. After looking to the datasheet, I expected to find PCH temperature in one of MIO registers at the beginning of the bank 4, but there are zeros:
     
    ------[ Nuvoton ISA Sensor Device at 0A10 / Bank #4 ]------
    0000  00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00
    0010  00 00 00 00  00 00 00 00  00 00 00 FF  FF FF FF FF
    0020  FF FF FF 96  64 96 64 E1  96 04 FF FF  FF FF FF FF
    0030  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF
    0040  FF FF 03 28  FF FF FF FF  FF FF 00 00  00 00 00 FF
    0050  03 73 FF FF  00 00 00 FF  FF 3C 02 13  09 FF FF FF
    0060  FF 01 00 00  00 00 00 00  FF FF FF FF  FF FF FF FF
    0070  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF
    0080  6F 00 D5 D4  00 00 91 CF  CB 85 13 0F  85 C3 15 00
    0090  77 7F 11 6B  6E 1D 00 2F  80 77 11 11  11 11 1F FF
    00A0  77 77 77 77  77 1F 00 96  00 00 00 00  00 00 00 00
    00B0  36 11 24 05  FF 1F FF 1F  FF 1F FF FF  FF FF FF FF
    00C0  03 05 04 8E  00 00 00 00  00 00 FF FF  FF FF FF FF
    00D0  00 00 00 00  00 00 FF FF  FF FF FF FF  FF FF FF FF
    00E0  7F 96 FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF
    00F0  11 80 00 00  FF FF FF FF  FF FF FF FF  FF FF FF FF
     
    According to Intel C602 datasheet, PCH temperature can be read by using Thermal Memory Mapped Configuration Registers (PCI D31:F26), but it looks like the sensor is not initialized by BIOS:
    PCI 00:31:6 = 8086:1D24:06:00000000 (CC 1180)
    ------------------------------------------------------------------------
    0000: 86 80 24 1D 00 00 10 00 06 00 80 11 00 00 00 00   †€$ ÿÿ ÿ ÿ€ ÿÿÿÿ
    0010: 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
    0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
    0030: 00 00 00 00 50 00 00 00 00 00 00 00 00 03 00 00   ÿÿÿÿPÿÿÿÿÿÿÿÿ ÿÿ
    0040: 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
    0050: 01 00 23 00 08 00 00 00 00 00 00 00 00 00 00 00   ÿ#ÿ ÿÿÿÿÿÿÿÿÿÿÿ
    0060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
    0070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
    0080: 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
    0090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
    00A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
    00B0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
    00C0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
    00D0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
    00E0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
    00F0: 00 00 00 00 00 00 00 00 87 0F 08 08 00 00 00 00   ÿÿÿÿÿÿÿÿ‡ ÿÿÿÿ
     
    It there a chance to initialize PCI D31:F26 from Windows and read PCH temperature in this way?
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