spa122 ata

produced by other manufacturers. For users, hard disk installation is also more convenient. IDE this interface technology from the birth has been constantly developing, performance has been continuously improved, its low-cost, compatible with the characteristics of strong, for its other types of hard disk can not replace the status. Early IDE interfaces have two transport modes, one is PIO (programming I/O) mode and the other is DMA (Direct Memory Access). Although DMA mode system resources ar

can not replace the status. Early IDE interfaces have two transport modes, one is PIO (programming I/O) mode and the other is DMA (Direct Memory Access). Although DMA mode system resources are low, they require additional drivers or settings and are therefore less acceptable. Later, in the case of higher speed requirements, the DMA mode is more efficient, the operating system starts to support directly, and the manufacturer has introduced more and more Fast DMA mode transfer speed standard. St

From: http://zhangwenxin82.blog.163.com/blog/static/114595956201071934831530/ I am quite touched by the libata module. The record is as follows. I hope it will be helpful to everyone and further deepen my understanding.Linux: linux-2.6.24.3Note: For personal understanding, improper understanding is inevitable. Please correct your criticism !!!! Everyone knows the driverProgramAfter the SATA controller is initialized and the ata_host struct is initialized, the function is called.Ata_host_acti

Not long ago, my old computer's hard drive broke down and there was a lot of information in it, so it was very depressing. I wanted to recover the hard disk data and asked about the price. I was shocked and decided to learn more about the hard disk restoration technology. You must have a full understanding of the overall physical structure of the hard disk before you have a deep understanding of disk opening data recovery. As an accessory with high precision, the external structure of the hard d

, its low price, compatible with strong characteristics, for which other types of hard disk can not be replaced by the status. The IDE represents a type of hard disk, but in practical applications, people are also accustomed to using the IDE to address the earliest IDE type hard disk ATA-1, this type of interface with the development of interface technology has been eliminated, and then the development of branching out more types of hard disk interfac

specific hard disk interface, Their speed difference is also greater. IdeThe IDE's English is all called "Integrated Drive Electronics", or "Electronic integrated Drive", which is meant to be the hard drive that integrates the hard disk controller and the disk body. The integration of the disk and the controller reduces the number and length of cables to the hard drive interface, enhances the reliability of the data transmission, and makes it easier to make the hard drive because the hard drive

practical applications, it is also customary to use the IDE to address the earliest IDE type hard disk ATA-1, a type of interface that has been eliminated with the development of interface technology and later branched out into more types of hard disk interfaces, such as ATA, Ultra ATA, Interfaces such as DMA, Ultra DMA, and so on are part of the IDE hard disk.

want the drive to vibrate during operation,The computer's vibrating magnetic arm can also vibrate, and the head may touch the track,And the disc has been spinning, it is possible to scrape the disc.We want the hard drive to maintain a stable working state.The hard disk is actually a mechanical device, only a minute to turn 10,000 rpm,While Pathfinding is a mechanical work, the main time to fetch data from a hard drive is spent on seeking the road.Read data consumption time from hard disk: Maxim

PATA is called parallel ATA hard drive, with a four-core power cord and a 80-core data line connected to the motherboard, which transmits data in parallel and in a column (string) transmission. Due to the restriction of parallel transmission, transmission rate is low, PATA hard drive is not needed. Introduction to the same port PATA standard specification was produced in the 80 's in the middle of the last century, Imprimis company launched t

would invest $4.3 billion in cash plus stock to acquire a Hitachi wholly owned subsidiary, Hitachi Global Storage Technology (HGST), a world-class hard drive manufacturer. Hard Disk Interface Ata Full name Advanced Technology attachment, is the traditional 40-pin with the port data cable to connect the motherboard and hard disk, the maximum external interface speed for the 133mb/s, because of the interference and the line is too poor, and line spa

id1 is % d \ n", CommFd ); WriteCom (CommFd, "AT + CGDCONT = 1, \" IP \ ", \" uk.lebara.mobi \ ", 0, 0 \ r "); Sleep (1 ); WriteCom (CommFd, "AT + CFUN = 1 \ r "); Sleep (1 ); Sleep (1 ); WriteCom (CommFd, "AT + cmscurl? \ R "); Sleep (1 ); Sleep (1 ); Flg1: WriteCom (CommFd, "AT + NETCLOSE \ r "); Sleep (1 ); Sleep (1 ); Sleep (1 ); Sleep (1 ); WriteCom (CommFd, "AT + NETOPEN = \" TCP \ ", 80, 0 \ r "); Sleep (1 ); Sleep (1 ); Sleep (1 ); Sleep (1 ); WriteCom (CommFd, "

Block device drivers for flash memory devices The first version of Windows CE was used solely on platforms with battery-backed Ram storage with a simple file system to manage the storage. however, Windows CE versions 2.10 and later are often used on embedded systems that require persistent storage and cannot depend on battery-backed Ram storage. as a solution Windows CE can use flash memory, which is the industry standard for nonvolatile storage in embedded applications. The two leading

% /home/dev/sda3 9.7G 1.3G 7.9G 15% /usr/dev/sda2 9.7G 198M 9.0G 3% /var/dev/sda1 99M 17M 77M 18% /boot Method 1: [root@www.ctohome.com]# hdparm -i /dev/sda/dev/sda: Model=SAMSUNG HE253GJ , FwRev=1AJ30001, SerialNo= S2B5J90ZC12060 Config={ Fixed } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4 BuffType=unknown, BuffSize=16384kB, MaxMultSect=16, MultSect=?16? CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAse

9.7G 1.3G 7.9G 15% /usr/dev/sda2 9.7G 198M 9.0G 3% /var/dev/sda1 99M 17M 77M 18% /bootMethod 1:[root@www.ctohome.com]# hdparm -i /dev/sda/dev/sda: Model=SAMSUNG HE253GJ , FwRev=1AJ30001, SerialNo= S2B5J90ZC12060 Config={ Fixed } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4 BuffType=unknown, BuffSize=16384kB, MaxMultSect=16, MultSect=?16? CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455 IORD

Hard Disk Interface ATA Full Name Advanced Technology attachment, is the traditional 40-pin and port data cable connection between the motherboard and the hard disk, the maximum external interface speed of 133mb/s, because the same line of interference is too poor, and line space, adverse computer cooling, will gradually be Replaced by SATA. Ide IDE's English is all called "Integrated Drive Electronics", namely "Electronic Integrated Drive", common

Tags: ROM plan ast div statement inline like Lib with  in the process of doing the project, a page uses a similar example of the following SQL query data. For the sake of secrecy and ease of use, I replaced the table names and fields in the project with the system tables and fields in the ORACLE database. in the project I have done. Similar to the All_tables table has about 8W of data, the following query SQL is very slow. With PARAMS as (SELECT ' user_id, ' sdate, '% ' | | '' || '% '

SATA is the abbreviation for Serial ATA, Serial ATA. This is a new type of hard disk interface that is completely different from parallel ATA, and is named because it transmits data in a serial way. SATA bus using embedded clock signal, with a stronger ability to error correction, compared with the past, the biggest difference is that the transmission instruction

system still recognizes only two groups of IDE channels, the following uses the Asus p4p800 motherboard as an example to describe the operation method in detail: (the following methods are the disc Boot Mode) 1. a sata hard disk is mounted on the sata1 interface, and a cdrom is mounted on the primary ide interface (set as the primary disk ):A) Start the system and enter BIOS settings. Select ide configuration from the main menu.Change onboard ide operate mode to compatible modeC) in [enhanced

IDE channels. The p4p800 motherboard is used as an example to describe the operation method in detail: (the following methods are the disc Startup Mode) 1, One SATA hard disk is mounted on the sata1 interface, and one CDROM is mounted on the primary ide interface (set as the primary disk ): A) Start the system and enter BIOS settings. Select ide configuration from the main menu. B) Change the onboard ide operate Change Mode to compatible mode. C) in [enhanced mode support on], select [primary P

First, IntroductionMobile Dream Network text messaging platform can be sent via SOAP, HTTP GET, HTTP POST, the following is the text I write in Perl through the SOAP send SMS script, it is more than the Dream Web provides PHP, Java is much smaller, and Nagios and other systems can be integrated;Second, usageBalance Enquiry: Sendmsgsoap.pl-u user-p password-bSend SMS: sendmsgsoap.pl-u user-p password-r receiver-m MessageThird, the source code#!/usr/bin/perl-w#[email protected] UseStrict; Use 5.1