address software

Today's IP networks use 32-bit addresses, represented in dotted decimal notation, such as 172.16.0.0. The address format is: IP address = network address + host address or IP address = Host address + subnet

Transferred from: http://blog.csdn.net/ordeder/article/details/41630945Copyright NOTICE: This article for Bo Master (http://blog.csdn.net/ordeder) original article, without Bo Master permission not reproduced.Directory (?) [-] Virtual space Organization of the process virtual address 1 Virtual Space User space 2 Memory Interval Organization of the system physical address

The input parameters and output results of most debugger commands use virtual addresses instead of physical addresses. However, physical addresses may sometimes be used. There are two ways to convert a virtual address into a physical address: use! Vtop extension and use! PTE extension. It can also be used in Windows NT 4.0! Vpdd extension. Use! Vtop for address c

Looked at many times, just to sort out my understanding of the whole communication process, the following, will continue to learn to supplement the correction:When communicating using the TCP/IP protocol family, there are three key identifying information: MAC address, IP address, and port number. The MAC address is wrapped in the Ethernet header at the

The following is a question from readers in the technical discussion group: Q: Program When downloading to nor, the loading address in ads is 0x30000000, which is the address of SDRAM. Is it automatically handled by the debugger? A: One address is the loading address, and the other is the running

We can see the following codevar Psource,pdest:pchar;Len:integer;.....//A number of codes.//////Move (Psource,pdest,len); ErrorMove (Psource^,pdest^,len); That's rightIt does look like it's a pass, not an address, but don't forget, it's not c,c++, it's Delphi.Object Pascal, so, must not be judged from the method of the function call is a value or a string address!! Must look at the function'sDefinition, onl

1. Page-related data structures and macro definitions The paging mechanism is the hardware support for paging, which is the hardware basis for virtual memory management. To make this hardware mechanism fully functional, you must have the support of the corresponding software. Let's take a look at some of the main data structures defined in Linux, the page is distributed in the include/asm-i386/directory. h, pgtable. H and pgtable-2level.h in three fil

[Deployment] configure the ip address of CentOS and deploy the ip address of centosEnvironment Virtual Machine: VMWare10.0.1 build-1379776 Operating System: 64-bit CentOS7Introduction CentOS7 Minimal installation (Minimal) without the ifconfig command, which can be installed in the net-tools Package through yum, but when our network is not configured, at this time, yum cannot work (cannot be connected to t

, that subnet mask set how much appropriate? Let's set out a formula first.2 m-Time Square =560First, we determine that 2 must be greater than 8 square, because we know that 2 of 8 is 256, that is, the number of Class C IP maximum capacity of the computer, we from 9 times a trial 2 9 is 512, less than 560, 2 10 is 1024, it seems 2 of the most suitable. The subnet mask consists of a total of 32 bits, has determined that the next 10 bits is 0, the front 22 bits is 1, the most appropriate subnet ma

I. Basic knowledge of memory management1.S3C2440 uses a maximum of two page tables: the first-level page table is used when converting in segments, and the two-level page table is used when converting pages. There are three sizes of pages: Large pages (64KB), small pages (4KB), and minimal pages (1KB). Entries are also referred to as "descriptors", which are: segment descriptors, large page descriptors, small page descriptors, minimal page descriptors--they save large pages, small pages, startin

Ordeder original article, original link: http://blog.csdn.net/ordeder/article/details/41630945Source Version 2.4.01. Virtual Space0-3G User space 0x00000000 ~ 0XBFFFFFFF3-4G kernel space 0xc0000000 ~ 0xFFFFFFFFEach user process has a separate user space (virtual address 0-3), and the kernel space is unique (equivalent to sharing)The user space for each process is described by mm_struct, which is task_struct.mm.2. Organization of the process virtual

for many friends who have just come into contact with Linux, how to set the IP address of the Linux system, as the first step, the following small series of CentOS system as an example, to show you how to set the IP address of the CentOS , how do I modify the Linux system IP address? Linux systems, CentOS View IP AddressLogin to connect to the Cen

Changes in the source IP address, destination ip address, and MAC address of a data packet during route forwarding. Does the source ip address, destination IP address, source MAC address, and destination mac change? A -- (B1-B2) -

Link Library and address irrelevant code, Link Library address [Static connection and dynamic link library] [Static link]---> Static library: Link to the source program and load it to the virtual memory[Dynamic Link]---> Shared Library:For each database, the operating system allocates a specific virtual memory address. The module loads the

on the motherboard varies with the physical memory size. However, the linear space provided for application programmers is fixed, it does not change with the physical memory, so as to ensure the portability of applications. Although the size of the physical memory can affect the performance of the application program running, and in many cases there is a minimum requirement on the size of the physical memory, these factors are only for the normal operation of an OS.The size of the linear space

Description: Each socket address structure should be implemented in network programming. So the main socket address structure after the premise network planning, address structure can be sent in two directions: from the process to the kernel and kernel processing. Conversion between binary values in the structure.Most socket functions require a pointer to the soc

Http://blogold.chinaunix.net/u1/43206/showart_518836.htmlSocket INADDR_ANY listens to the 0.0.0.0 address. The socket only binds the port so that the route table decides which ip address to transfer.INADDR_ANY indicates the address 0.0.0.0. In fact, this address indicates an uncertain

// All. h// 2005/06/20, A.M. wenxy# Ifndef _ all_h# DEFINE _ all_h# Include # Include # Include # Include # Include # Include Socket. H># Include # Include # Include //---------------------// Create the ARP packet header file# Include # Include /* # Include # Include # Include //---------------------# Include # Include # Include Using namespace STD;# Define max_mac_len 24 // Maximum length of the Mac string buffer (byte)# Define compart_mac ":" // delimiter of the Mac string. warnning: modify th

What is a private IP address, and what is the function of a private IP address? A particular type of IP address is called a private IP address. In the current network, the IP address is divided into public IP and private IP address