Memory-mapped I/O vs port-mapped I/O】的更多相关文章

A data processor supports the use of multiple memory models by computer programs. At a device external to a data processor, such as a memory controller, memory transactions requests are received from the data processor. Each memory transaction reques…
 这个文档介绍了在DM642EVM板上视频采集和显示微驱动的使用和设计.用EDMA进行存储器和视频端口的数据传输.为了增强代码的复用性和简化设计过程,驱动分为通用视频端口层和特定编解码芯片微驱动层两个部分.外部设备控制(EDC)接口将这两个部分以即插即用的方式联系在一起. 1 Overview       The DSP’sEDMA is used to transfer data between memory and the TMS320DM642Video Port. Tomaximize…
Memory management is the heart of operating systems; it is crucial for both programming and system administration. In the next few posts I'll cover memory with an eye towards practical aspects, but without shying away from internals. While the concep…
Memory management is the heart of operating systems; it is crucial for both programming and system administration. In the next few posts I'll cover memory with an eye towards practical aspects, but without shying away from internals. While the concep…
An improved memory model and implementation is disclosed. The memory model includes a Total Store Ordering (TSO) and Partial Store Ordering (PSO) memory model to provide a partial order for the memory operations which are issued by multiple processor…
原地址:http://blog.sina.com.cn/s/blog_72b936d801013ptr.html icense Comparisons http://unity3d.com/unity/licenses#iphone Optimizing Graphics Performance http://unity3d.com/support/documentation/Manual/Optimizing Graphics Performance.html iOS A useful bac…
Linux下如何查看系统启动时间和运行时间 1.uptime命令输出:16:11:40 up 59 days, 4:21, 2 users, load average: 0.00, 0.01, 0.00 2.查看/proc/uptime文件计算系统启动时间cat /proc/uptime输出: 5113396.94 575949.85第一数字即是系统已运行的时间5113396.94 秒,运用系统工具date即可算出系统启动时间 代码: 全选 date -d "$(awk -F. '{print…
http://www.dmtf.org/standards/smbios Dmidecode 这款软件允许你在 Linux 系统下获取有关硬件方面的信息.Dmidecode 遵循 SMBIOS/DMI 标准,其输出的信息包括 BIOS.系统.主板.处理器.内存.缓存等等. [root@oracle3A ~]# which dmidecode /usr/sbin/dmidecode [root@oracle3A ~]# rpm -qf /usr/sbin/dmidecode dmidecode-.…
  原文  http://resources.infosecinstitute.com/system-address-map-initialization-x86x64-architecture-part-2-pci-express-based-systems/   This article is the second part of a series that clarifies PCI expansion ROM address mapping to the system address m…
psutil documentation¶ Quick links Home page Install Blog Forum Download Development guide What’s new About psutil (python system and process utilities) is a cross-platform library for retrieving information on running processes and system utilization…
  DLL 该扩展仅在内核模式下使用,即使它是在Ext.dll中的. Windows NT 4.0 Ext.dll Windows 2000 Ext.dll Windows XP和之后 Ext.dll 注释 如果不提供参数,调试器会列出所有进程,以及时间和优先级统计.这和使用!process @#Process 0 作为CommandString值一样. To terminate execution at any point, press CTRL+BREAK (in WinDbg) or CT…
Dmidecode 这款软件允许你在 Linux 系统下获取有关硬件方面的信息.Dmidecode 遵循 SMBIOS/DMI 标准,其输出的信息包括 BIOS.系统.主板.处理器.内存.缓存等等. 一.DMI简介: DMI (Desktop Management Interface, DMI)就是帮助收集电脑系统信息的管理系统,DMI信息的收集必须在严格遵照SMBIOS规范的前提下进行. SMBIOS(System Management BIOS)是主板或系统制造者以标准格式显示产品管理信息所…
[Game Engine Architecture 2] 1.endian swap 函数 floating-point endian-swapping:将浮点指针reinterpert_cast 成整数指针,或使用 union 变成整形来swap. 2.metric (SI) units like kilobytes (kB) and megabytes (MB) are power of 10. kilo means 10^3, not 1024. To resolve this ambig…
Dmidecode 这款软件同意你在 Linux 系统下获取有关硬件方面的信息.Dmidecode 遵循 SMBIOS/DMI 标准.其输出的信息包含 BIOS.系统.主板.处理器.内存.缓存等等. Dmidecode简单介绍 DMI (Desktop Management Interface, DMI)就是帮助收集电脑系统信息的管理系统,DMI信息的收集必须在严格遵照SMBIOS规范的前提下进行. SMBIOS(System Management BIOS)是主板或系统制造者以标准格式显示产品…
SOS.dll (SOS debugging extension) The SOS Debugging Extension (SOS.dll) helps you debug managed programs in Visual Studio and in the Windows debugger (WinDbg.exe) by providing information about the internal Common Language Runtime (CLR) environment.…
Interpreting /proc/meminfo and free output for Red Hat Enterprise Linux 5, 6 and 7 Solution Verified - UpdatedOctober 2 2018 at 6:35 AM - https://access.redhat.com/solutions/406773 Environment Red Hat Enterprise Linux (RHEL) 5 Red Hat Enterprise Linu…
by Umer Zeeshan Ijaz The purpose of this tutorial is to introduce students to the frequently used tools for NGS analysis as well as giving experience in writing one-liners. Copy the required files to your current directory, change directory (cd) to t…
1.DMI简介 DMI (Desktop Management Interface, DMI)就是帮助收集电脑系统信息的管理系统,DMI信息的收集必须在严格遵照SMBIOS规范的前提下进行. SMBIOS(System Management BIOS)是主板或系统制造者以标准格式显示产品管理信息所需遵循的统一规范.SMBIOS和DMI是由行业指导机构Desktop Management Task Force (DMTF)起草的开放性的技术标准,其中DMI设计适用于任何的平台和操作系统.  DMI…
转自:http://www.wowotech.net/basic_subject/meltdown.html#6596 摘要(Abstract) The security of computer systems fundamentally relies on memory isolation, e.g., kernel address ranges are marked as non-accessible and are protected from user access. In this p…
最近在看NVMeDirect和SPDK的源码,觉得有必要梳理一下MMIO和PMIO的区别.关于MMIO和PMIO,维基百科上是这么讲滴, Memory-mapped I/O (MMIO) and port-mapped I/O (PMIO) (which is also called isolated I/O) are two complementary methods of performing input/output (I/O) between the central processing…
原文网址:http://blog.csdn.net/longxibendi/article/details/6048231 1.网址: http://www.mjmwired.net 2.比如查看这个 proc.txt ,就在这里能找到. http://www.mjmwired.net/kernel/Documentation/filesystems/proc.txt 内核参数解释全在这里了.不过,也可以下载内核完源代码,从/usr/src/linux/Documentation/proc.tx…
About psutil (python system and process utilities) is a cross-platform library for retrieving information on running processes and system utilization(CPU, memory, disks, network, sensors) in Python. It is useful mainly for system monitoring, profilin…
SNMP OID Reference - NetScaler 10 https://docs.citrix.com/content/dam/docs/en-us/netscaler/10/downloads/ctx132381.htm System Limits for a NetScaler Appliance 参考 https://support.citrix.com/content/dam/supportWS/kA460000000CcAzCAK/CTX118716.pdf This re…
关于MMIO和PIO,我看到的解释最清楚的文章,原文在这里:Memory-mapped I/O vs port-mapped I/O - 2015 Microprocessors normally use two methods to connect external devices: memory mapped or port mapped I/O. However, as far as the peripheral is concerned, both methods are really…
dmidecode命令可以让你在Linux系统下获取有关硬件方面的信息.dmidecode的作用是将DMI数据库中的信息解码,以可读的文本方式显示.由于DMI信息可以人为修改,因此里面的信息不一定是系统准确的信息.dmidecode遵循SMBIOS/DMI标准,其输出的信息包括BIOS.系统.主板.处理器.内存.缓存等等. DMI(Desktop Management Interface,DMI)就是帮助收集电脑系统信息的管理系统,DMI信息的收集必须在严格遵照SMBIOS规范的前提下进行.SM…
A multiprocessor computer system is provided having a multiplicity of sub-systems and a main memory coupled to a system controller. An interconnect module, interconnects the main memory and sub-systems in accordance with interconnect control signals…
一.先来看几个用dmidecode查看内存信息的例子. 1.查看内存槽数.那个槽位插了内存,大小是多少 [root@jiangyi01.sqa.zmf /home/ahao.mah] #dmidecode|grep -P -A5 "Memory\s+Device"|grep Size|grep -v Range Size: 8192 MB Size: 8192 MB Size: 8192 MB Size: 8192 MB Size: 8192 MB Size: 8192 MB Size…
转载表明来源:http://blog.csdn.net/yzzst/article/details/47128581 创业要接地气,GOOGLE.亚马逊.微软在中国做的怎么样,全然取决于他们的本地化程度. --周鸿祎 Java命令行工具 am工具(启动和调试组件) am工具的含义为Activity Manager. usage: am [subcommand] [options] start an Activity: am start [-D] [-W] -D: enable debugging…
The present invention allocates resources in a multi-operating system computing system, thereby avoiding bottlenecks and other degradations that result from competition for limited resources. In one embodiment, a computer system includes resources an…
How to Automate IIS 7 Configuration with .NET How to Automate IIS 7 Configuration with .NET Are you tired of manually configuring IIS sites (adding Web sites, application pools, virtual directories and so on)? Use C# and the Microsoft.Web.Administrat…