如何获取CPU以及主板的温度？

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  1.   

    主板支持的话，请问如何读取CMos信息？
      

  2.   

    http://expert.csdn.net/Expert/topic/1499/1499897.xml?temp=.3477136
    http://expert.csdn.net/Expert/topic/1622/1622047.xml?temp=.9898035
      

  3.   

    coms可以通过读 i/o 获取，不过你要先找到温度是存在具体的什么位置 从 70 口写入地址 71口读出
      

  4.   

    CPUID指令
     1. CPUID指令代码: 0a20f
       例:
       
         CPUID MACRO
              dw 0a20fh
         ENDM
       
     2. CPUID有效检测
         如果程序可以改变EFLAGE(扩展标志字)的第21位，那么CPUID有效，
         否则无效。
         注：对于Cyrix的CPU，在打开其内部CPUID标志位之前，用此方法检测
         无效。
        例:
         
          ...
          pushfd
          pop eax            
          mov ecx,eax
          xor eax,200000h    ;强制扩展标志位第21位为1
          push eax
          popfd
          pushfd
          pop eax
          xor eax,ecx        ;如果扩展标志位的第21位为1，那么
          je no_cpuid        ;CPUID存在，否则不存在
          jmp have_cpuid
          ...
        
     3. CPUID指令
       (1)基本指令
         1.第0号功能: (EAX=0)
         调用寄存器:
           EAX=0
         返回寄存器:
          EAX=最大功能号
          EBX:EDX:ECX=CPU厂商识别串
         例:
         
          ...
          xor eax,eax        
          CPUID      
          cmp ebx,"Genu"
          jne no_intel 
          cmp edx,"ineI"
          jne no_intel
          cmp ecx,"ntel"
          jne no_intel
          jmp is_intel
          ...
         
         合并ebx,edc,ecx寄存器的值,如果为GenuineIntel,就是Intel的CPU     另:
         AuthenticAMD => AMD
         CyrixInstead => Cyrix,被VIA兼并了
         NexGenDriven => NextGen
         RiseRiseRise => Rise
         UMC UMC UMC  => UMC
         CentaurHauls => IDT     2.第1号功能: (EAX=1)
         调用寄存器
          EAX=1
         返回寄存器
          EAX=CPU说明
           CPU说明(见附录1)
           
             bit     内容
            0--3     节率 (stepping)
            4--7     型号 (model)
            8--11    家族 (family)
           
          EDX=特征标志字
          
            bit      内容                                 缩写
             0       FPU On-chip                          FPU
             1       Virtual Mode Extension               VME
             2       Debugging Extension                  DE
             3       Page Size Extension                  PSE
             4       Time Stamp Counter                   TSC
             5       RDMSR/WRMSR Instructions
             6       Physical Address Extension           PAE
             7       Machine Check Exception              MCE
             8       CMPXCHG8B Instruction
             9       On-chip APIC HardWare
             10      Undefined
             11      SYSENTER/SYSEXIT Instructions
             12      Memory Type Range Registers
             13      Page Global Enable                   PGE
             14      Machine Check Architecture           MCA
             15      Conditional Move Instruction         CMI
             16      Page Attribute Table                 PAT
             17--22  Undefined
             23      MMX Instructions                     MMX
             24      internet Streaming SIMD Extensions   SSE
             25--31  Undefined
              (2)扩展指令
          1.第80000000号功能(EAX=80000000h)
            调用寄存器:
            EAX=80000000h
            返回寄存器:
            EBX,ECX,EDX=保留
            EAX=最大功能号      2.第80000001号功能
            调用寄存器:
            EAX=80000001h
            返回寄存器:
            EAX=CPU说明(见第1号功能)
            EDX=扩展特征标志字
            
              EDX[0] <- FPU:  FPU on Chip
              EDX[1] <- VME:  Virtual Mode Extention present
              EDX[2] <- DE:   Debbuging Extentions
              EDX[3] <- PSE:  CPU support  4MB size pages
              EDX[4] <- TSC:  TSC present (See RDTSC command)
              EDX[5] <- MSR:  CPU have K5 Compatible MSRs
              EDX[6] <- 0  (Reserved)
              EDX[7] <- MCE:  Machine Check exception
              EDX[8] <- CX8:  Support CMPXCHG8B instruction
              EDX[9] <- Reserved
              EDX[10]<- Support SYSCALL and SYSRET instruction  (!!!)
              EDX[11,12]<-  reserved
              EDX[13]<- PGE:  Page Global Feature support
              EDX[14]<- reserved
              EDX[15]<- CMOV: CPU support CMOV instruction
              EDX[16]<- FCMOV: CPU support FP. FCMOV    (!!!)
              EDX[22..16] <- Reserved
              EDX[23] <- MMX: CPU support IA MMX
              EDX[24] <- (Cyrix) Cyrix Extended MMX
              EDX[30..24] <- Reserved
              EDX[31] <- AMD 3DNow!
           
    1. Cyrix
        厂商识别串: "CyrixInstead"
        CPU名称       家族        型号
        MediaGX        4           4     
        6x86           5           2     (特征标志字=0x1)
        6x86L          5           2     (特征标志字=0x105)
        GXm            5           4
        6x86MX         6           0
             
    2. NexGen
        厂商识别串: "NexGenDriven"
        CPU名称       家族        型号
        Nx586          5          3. UMC
        厂商识别串: "UMC UMC UMC "
        CPU名称       家族        型号
        U5D            4           1
        U5S            4           24. AMD
        厂商识别串: "AuthenticAMD"
        CPU名称       家族        型号
       486DX2WT        4            3
       486DX2WB        4            7
       486DX4WT        4            8
       486DX4WB        4            9
       5x86WT          4           0x0e
       5x86WB          4           0x0f
       486             4           Others
       K5/SS           5            0
       K5              5           1,2,3
       K6              5           6,7
       K6-2            5            8
       K6-III          5            9
       K5/K6           5           Others
       K7工程样本      6            0
       K7              6           Others5. IDT
        厂商识别串: "CentaurHauls"
        CPU名称       家族        型号
       WinChip C6      5            4
       WinChip 2       5            86  Rise
        厂商识别串: "RiseRiseRise"
        CPU名称       家族        型号
        mP6            5           07. Intel
        厂商识别串: "GenuineIntel"
        CPU名称                       家族        型号
        PentiumII                      6           3
        Celeron                        6           5
        CeleronA                       6           6
        PentiumIII                     6           7
        PentiumPro OverDrive P6        6           1
        PentiumPro                     6          Others
        PentiumP5                      5           1
        PentiumP54C                    5           2
        Pentiumi486                    5           3
        PentiumMMX                     5           4
        PentiumDX4                     5           5
        Pentium OverDrive P5           5           6
        Pentium                        5          Others
        486DX                          4          0,1
        486SX                          4           2
        486DX2                         4           3
        486SL                          4           4
        486SX2                         4           5
        486DX2_WB                      4           7
        486DX4                         4           8
        Celeron                      7,8          1
        Pentium III Xeon             7,8          3
        Pentium IV                   7,8          4
        Pentium III                  7,8          L2Cache<1024
        Pentium III Xeon             7,8          other
        Pentium III Xeon             10($A)
        Pentium VI or Ithanium       15($F)用其它开发工具做个动态链接库文件供VB调用!some website FYI
    http://instruct1.cit.cornell.edu/courses/ee476/FinalProjects/s2000/larry/finalasm.htm
    http://www.sun.com/products-n-solutions/hardware/docs/html/816-2485-12/asm.html#57334