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Subnet Mask and IP address calculation network address and broadcast address conversion IP Address: 202.112.14.20.Subnet Mask: Too Many Subnet MaskWhat is the network address and broadcast address of this host?Solution:St

Linux-0.11 kernel source code analysis series: on Linear address, logical address, physical address of the relationship and difference, linux-0.11 source code /** Author: David Lin * Date: 2014-11-22pm * Email: linpeng1577@163.com or linpeng1577@gmail.com * world: the city of SZ, in China * Ver: 000.000.001 * history: editor time do * 1) linPeng 2014-11-22 create

Logic address to linear address The memory addresses in machine language commands are logical addresses, which need to be converted to linear addresses and then converted to physical addresses by MMU (Memory Management Unit in the CPU. We will write the simplest Hello World Program and compile it with GCC. After disassembly, we will see the following command:MoV 0x80495b0, % eax The memory

one, logical address to linear addressThe memory address that appears in the machine language instruction is a logical address that needs to be converted to a linear address and then converted to a physical address by the MMU (Memory management unit in the CPU) to be accessi

Tag:linux kernel memory management /* *author:davidlin *date:2014-11-22pm *email: [emailprotected] or [emailprotected] *world:the City of SZ, in China *ver:000.000.001 *history:editor time do * 1) Linpeng 2014-11-22 created this file! * 2) */ All of the following descriptions are based on the Linux0.11 kernel and all material and non-material base X86 Protected mode programming rules: X86 protected mode with a physical address of 4G Spac

User Virtual addresses This is the user Program Common address. The user address is 32-bit or 64-bit in length. It depends on the underlying hardware structure and each process has its own virtual address space. Physical addresses The address used between the processor and the system memory. The physical

Understand the runtime address and link address from the two-statement assembly, and the Assembly link address First, let's look at two lines of assembly code: 1: adr r0, _start 2: ldr r1, =_start Load the address value of a label. What is the difference between adr and ldr? Note that the ldr here is not a

/** * Get local IP address * @author YOLANDA * @return */public static string Getlocalipaddress () {String ipAddress = ""; try {Enumerat ion/* here to add a little explanation, because at the beginning of 21, HttpClient was abandoned, Google recommended the use of Urlconnect, where the Ipv4 is also abandoned, in order to be compatible with later versions, I httpclient some of the source code directly to the project to use, so here appears the Ipv4 che

Ubuntu 15.10 sets static ip Address Allocation fixed ip Address Settings dns settings gateway command line configuration ip fixed ip address does not take effect what to do, ubuntu15.10 Files to be used: Configure Interface Information /Etc/network/interfaces Configuration content: Auto eth0 Iface eth0 inet static Address