hardware

问题 In what I've learned so far about segmentation: A virtual address contains a segment selector and an offset The segment selector is used in conjunction with the GDTR to find the linear address of the segment descriptor The segment descriptor houses information regarding the chosen segment, including its linear address So, my questions are: Based on what I've read, the virtual address is loaded into the segment register, and then somehow the translation is continued from there. What happens to

问题 I am trying to extract thermal information in an android application programmatically but there is not enough documentation to do so. The things which I want to extract are like this: vbal_low - 37.9 C gold-virt-max-step - 28.2 C cpu3-silver-lowf - 27.8 C msm-therm-adc - 26 C mdm-dsp - usr - 30.1 C gpu0-lowf - 27.5 C wlan-lowf - 28.1 C and there are like other 50 or so temperature values, how to do so? 回答1: public float thermalTemp(int i) { Process process; try { process = Runtime.getRuntime(

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago . Improve this question How can I make the motherboard internal speaker produce sounds, for example using the Beep command but directed towards the motherboards speakers . OS = Windows 7 x64 I currently know how to provide beeps to the default sound device, including tone and

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago . Improve this question How can I make the motherboard internal speaker produce sounds, for example using the Beep command but directed towards the motherboards speakers . OS = Windows 7 x64 I currently know how to provide beeps to the default sound device, including tone and

问题 How to identify the hardware details of a Linux/Mac machine using.Net Core. For windows machines, we can use System.Management and WMI Query. So is there any similar way to identify the hardware details (like RAM ,Processor,Monitor ,CAM etc) of Linux and Mac machines. For windows, I'm using: ManagementObjectSearcher searcher = new ManagementObjectSearcher("select * from Win32_Processor"); 回答1: I have done a workaround to get hardware info as per Platform. For windows I have used old way of

问题 When sending a command and reading the data from a certain chip, say the RTC, different documents say that we should wait for some time before reading from the device to make sure the data is available. Many pieces of code make a dummy read from the port 0x80 . I wanted to know to what device this address location is connected, if any. I am talking with respect to the IA-32 PC architecture. 回答1: I/O port 0x80 is traditionally used for POST Codes. (POST = Power On Self Test) While the system

问题 When sending a command and reading the data from a certain chip, say the RTC, different documents say that we should wait for some time before reading from the device to make sure the data is available. Many pieces of code make a dummy read from the port 0x80 . I wanted to know to what device this address location is connected, if any. I am talking with respect to the IA-32 PC architecture. 回答1: I/O port 0x80 is traditionally used for POST Codes. (POST = Power On Self Test) While the system

问题 When sending a command and reading the data from a certain chip, say the RTC, different documents say that we should wait for some time before reading from the device to make sure the data is available. Many pieces of code make a dummy read from the port 0x80 . I wanted to know to what device this address location is connected, if any. I am talking with respect to the IA-32 PC architecture. 回答1: I/O port 0x80 is traditionally used for POST Codes. (POST = Power On Self Test) While the system

问题 I know access to ports in I/O address spaces requires specific IN/OUT instructions and they are not part of Physical memory( RAM) but I have not understood Where is the I/O address space actually located (Physically)? (some sort of RAM in )I/O controller? Reserved side of physical memory? 回答1: On the early X86 processors (and also the 8080, Z80 etc) I/O address space was on the same data and address bus as the memory, but was accessed by activating a dedicated IO-request pin on the CPU So

问题 When there is a page fault or a cache miss we can use either the Least Recently Used (LRU), First in Fist Out (FIFO) or Random replacement algorithms. I was wondering, which one provides the best performance aka the least possible future cache miss'/page faults? Architecture: Coldfire processor 回答1: No perfect caching policy exists because it would require knowledge of the future (how a program will access memory). But, some are measurably better than others in the common memory access