pci ramdisk

PCI, pci-x, pci-e differenceOne, PCI busThe PCI bus standard was developed by Pcisig in 1992 and has a history of more than 8 years. Total bandwidth =33mhzx32bit/8=133mb/s for PCI.Second, Pci-x busPci-x is based on a

Introduction to ramdisk. img, system. img, userdata. img In the Android image file, ramdisk Image After the Android source code is compiled, three image files generated in the out directory are ramdisk. img, system. img, userdata. img, and their corresponding directory tree root, system, and data. Ramdisk. img is the

PCI bus specifies the bus transaction that accesses the configuration space, which is called the configuration read/write transaction. Unlike the storage access transactions that use the storage address for access, the idnumber is used for addressing access to the PCI configuration space. The ID of a PCI device consists of the bus number, device number, and funct

Directory: http://www.cnblogs.com/WuCountry/archive/2008/11/15/1333960.html[Do not provide illustrations. You are advised to download the source book from the Internet]Chapter 6. The PCI layer and network interface cards, PCI layer and network interface cardGiven the popularity of the PCI bus, on the x86 as well as other ubuntures, we will spend a few pages on it

Linux PCI/PCI-E Device configuration space Read and modify 1 Preface PCI and PCI Express, is a high-speed bus commonly used by computers. PCI/PCI-E device drivers and operating system cores in the operating system require access

------------- Auto Configuration -------------------- PCI provides two separate 32-bit or 64-bit address spaces corresponding to the memory and I/O port address spaces of the x86 Processor family. addresses in these address spaces are assigned by software. A third address space, called the PCI configuration space, which uses a fixed addressing scheme, allows software to determine the amount of memory and I

Interrupt mechanism of PCI busConnection between interrupt signal and interrupt ControllerConnection between interrupt signal and PCI busThe PCI bridge specification does not require the bridge to pass the interrupt request of its next PCI device. In fact, most PCI bridges a

Solve the Problem of abnormal PCI device on IBM x346 IBM x346 server, because many PCI devices on the machine have Rom space limited by kb, The message "1801 PCI device Resource Allocation failure" is displayed at startup. For more information about the cause and solution of this message, see the following URL: Http://www.ibmbp.com.cn/new/read.asp? Id = 113 asub

The registration and initialization process of the pci NIC Driver is implemented. the TCP/IP protocol stack and the pci protocol stack are implemented after soft interruptions occur.0x01 reason The purpose of this study is to follow the outline below: The three handshakes, data transmission, and four handshakes are debugged by the server client program. The setup environment is as follows: debug the Linux k

Article title: Linux core-7. PCI device. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Original: David A Rusling Translation: Banyan fifa Chapter 6 PCI Peripheral device interconnection (PCI) is a bus standard that connects

What is RAMDisk, I'm afraid I don't need to say that we all know. As for the advantages of RAMDisk, Baidu you can see because Ramsik has a fast read and write speed so "temporary files can speed up", "Install software can be opened seconds" and so on various optimization methods, more sharp speech also think that using RAMDisk can prolong the life time, protect t

The following two articles are very good articles on the RAMDisk file system in the ARM9 forumToday did a test, let Linux2.6.29.4 from the RAMDisk root file system to start a successful, summed up.It involves more content, a lot of things no longer detailed, for further study please consult the relevant information (Baidu or Google a lot).Development environment: Fedora 9Cross-compilation toolchain: ARM-LIN

1. ramdisk is the smallest Linux rootfs system. It contains all Linux systems except the kernelTools required for import and management include the following directories: Bin, Dev, etc, home, Lib, MNT, Proc, sbin, USR, VAR. Some basic tools are also required: Sh, ls, CP, MV ...... (In the/bin directory); necessary configuration filesPieces: inittab, RC, fstab ...... Located in (/etc directory); required Device Files:/dev/tty *,/dev/CONsole,/Dev/MEN ..

These days the reference to the country embedded experimental manuals and online information to complete the U-boot customization, core customization, RAMDisk root file system production, and success. Strike, summarize. This article refers to a lot of articles on the Internet, it is not noted. Thanks to the help of the heroes, if there is similar, hope forgive me.Development environment: Red Hat Enterprise Edition 5Cross-compilation Toolchain: arm-lin

To understand the Linux PCI device driver, first understand that the so-called Linux PCI device driver actually includesLinux PCI device drivers and Device Drivers. I do not know whether the reader understands this sentence. I think this sentence is very important. For drivers like PCI and USB, we must understand this

Note: a good article on understanding PCI devices and PCI drivers To understand the Linux PCI device driver, first understand that the so-called Linux PCI device driver actually includes the Linux PCI device driver and the device driver. I do not know whether the reader unde

Introduction in Linux, there is a special feature-initializing the memory disk initrd (initial RAM disk) technology, and the kernel supports compressed file system images. With these two features, we can enable Linux to initialize memory disks from an early stage. Introduction In Linux, there is a special feature-initializing the memory disk initrd (initial RamDisk) technology, and the kernel supports compressed file system images. With these two fun

View the ramdisk size: Fdisk-L/dev/ram0 The followingArticleTransferred from:Http://www.linuxdiyf.com/viewarticle.php? Id = 26952 1. What is ramdisk? Ram: memory, Disk: disk, which can be used as a partition in Linux. It is called ramdisk. For files that are frequently accessed and will not be changed, you canPlacing them in memory through

1. What is ramdisk? Ram: memory, Disk: disk, which can be used as a partition in Linux. It is called ramdisk. For exampleFiles that are frequently accessed and not changed can be stored in the memory through ramdisk, which can significantly improve system performance. Ramdisk works in Virtual File System (VFS)Layer, c

Today did a test, let Linux2.6.29.4 from the RAMDisk root file system to start a successful, summed up.It involves more content, a lot of things no longer detailed, for further study please consult the relevant information (Baidu or Google a lot).Development environment: Fedora 9Cross-compilation toolchain: ARM-LINUX-GCC 4.3.2 with EABIEmbedded Linux kernel version: 2.6.29.4-friendlyarm. When I wrote the Post yesterday, I did not know the details, tod