No issue what you perform with your comp­uter, storage is an important part of your system. In fact, most personal medtox.orgs have one or an ext of the following storage devices:


Usually, these devices attach to the medtox.org through one Integrated journey Electronics (IDE) interface. Essentially, an principle interface is a standard means for a storage device to attach to a medtox.org. Ide is actually no the true technological name because that the interface standard. The initial name, AT Attachment (ATA), signified the the interface was initially arisen for the IBM at medtox.org. In this article, you will learn around the evolution of IDE/ATA, what the pinouts are and also exactly what "slave" and "master" mean in IDE.

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Most motherboards come through an principle interface. This user interface is regularly referred to together an ide controller, i beg your pardon is incorrect. The user interface is actually a host adapter, meaning that it gives a means to connect a complete maker to the medtox.org (host). The actual controller is ~ above a circuit plank attached come the hard drive. That"s the reason it"s called integrated Drive electronic devices in the very first place!

While the concept interface to be originally occurred for connecting tough drives, that has evolved into the universal user interface for connecting internal floppy drives, CD-ROM drives and even part tape back-up drives. Although that is an extremely popular for interior drives, concept is rarely provided for it is registered an external device.


There are numerous variations the ATA, every one adding to the ahead standard and maintaining behind compatibility.

The criter include:

ATA-1 - The original specification that Compaq consisted of in the Deskpro 386. That instituted the use of a master/slave configuration. ATA-1 was based on a subset the the traditional ISA 96-pin connector that uses either 40 or 44 pen connectors and also cables. In the 44-pin version, the extra 4 pins are used to supply power to a drive that doesn"t have a separate power connector. Additionally, ATA-1 offers signal timing for direct storage access (DMA) and also programmed input/output (PIO) functions. DMA method that the drive sends information straight to memory, while PIO method that the medtox.org"s central processing unit (CPU) manages the details transfer. ATA-1 is more commonly known as IDE.

ATA-2 - DMA was fully implemented start with the ATA-2 version. Typical DMA carry rates boosted from 4.16 megabytes per 2nd (MBps) in ATA-1 to as many as 16.67 MBps. ATA-2 provides power management, PCMCIA map support and removable device support. ATA-2 is often called EIDE (Enhanced IDE), fast ATA or quick ATA-2. The total hard drive dimension supported enhanced to 137.4 gigabytes. ATA-2 provided standard translation approaches for Cylinder Head Sector (CHS) for hard drives up to 8.4 gigabytes in size. CHS is just how the device determines wherein the data is located on a difficult drive. The factor for the big discrepancy between total tough drive size and also CHS hard drive support is due to the fact that of the little sizes offered by the simple input/output system (BIOS) because that CHS. CHS has actually a fixed length for each component of the address:


You will note that the number of sectors is 63 rather of 64. This is since a ar cannot begin with zero. Every sector holds 512 bytes. If you main point 1,024 x 256 x 63 x 512, you will obtain 8,455,716,864 bytes or approximately 8.4 gigabytes. More recent BIOS versions increased the little size because that CHS, giving support because that the complete 137.4 gigabytes. ATA-3 - with the enhancement of Self-Monitoring analysis and Reporting modern technology (SMART), concept drives to be made much more reliable. ATA-3 also adds password defense to access drives, offering a valuable security feature.

ATA-4 - most likely the two biggest additions to the typical in this version space Ultra DMA support and the integration that the AT Attachment regimen Interface (ATAPI) standard. ATAPI gives a typical interface for CD-ROM drives, tape backup drives and other removable warehouse devices. Prior to ATA-4, ATAPI was a completely separate standard. Through the inclusion of ATAPI, ATA-4 automatically improved the removable media support of ATA. Ultra DMA boosted the DMA transfer rate from ATA-2"s 16.67 MBps come 33.33 MBps. In addition to the existing cable that offers 40 pins and 40 conductors (wires), this version introduces a cable that has actually 80 conductors. The other 40 conductors room ground wires interspersed in between the standard 40 conductors to improve signal quality. ATA-4 is also known as Ultra DMA, Ultra ATA and also Ultra ATA/33.

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ATA-5 - The major update in ATA-5 is auto detection of i beg your pardon cable is used: the 40-conductor or 80-conductor version. Ultra DMA is enhanced to 66.67 MB/sec v the use of the 80-conductor cable. ATA-5 is also called Ultra ATA/66.