PCI IDE Controller: Difference between revisions
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IDE is a keyword which refers to the electrical specification of the cables which connect ATA drives (like hard drives) to another device. The drives use the ATA (Advanced Technology Attachment) interface. An IDE cable also can terminate at an IDE card connected to PCI.
[[ATAPI]] is an extension to ATA (recently renamed to PATA) which adds support for the SCSI command set.
===Parallel/Serial ATA/ATAPI===
IDE can connect up to 4 drives. Each drive
*
*
*
*
Accessing an ATA/PATA drive works the same way as accessing a SATA drive. This also implicitly states that accessing a PATAPI ODD is the same as accessing a SATAPI ODD. An IDE driver does not need to know whether a drive is parallel or serial, it only has to know whether it's using ATA or ATAPI.
===IDE Interface===
[[Image:Ide-motherboard-connectors.jpg|thumb|IDE on motherboard|256px|The white and green ports are the Parallel IDE ports on the motherboard.]]
[[Image:PATA-Cable.jpg|thumb|PATA Cable|256px|PATA cable which connects
[[Image:SATA-motherboard.jpg|thumb|SATA Ports|256px|4 Serial IDE ports on the motherboard.]]
[[Image:SATA-Cable.gif|thumb|SATA Cable|256px|SATA cable which connects to a SATA port.]]
If you open your case up and take a look at
The white and green ports are IDE ports, also known as ''channels''. In this example there are both primary and secondary IDE channels which only PATA can be connected to; this means that it only supports PATA/PATAPI drives.
Each port can have a PATA cable connected to it (see
▲Each port can have a PATA cable connected to it (see photo on right). One master drive, or two drives (master and slave) can be connected to one PATA cable.
* Primary Master Drive.
* Primary Slave Drive.
* Secondary Master Drive.
* Secondary Slave Drive.
Each drive
===Serial IDE===
Almost every modern motherboard has a Serial IDE channel which allows [[SATA]] and SATAPI Drives to be connected to it. There are 4 Serial IDE Ports (you can see these in the photo to the right). Each port is connected to a drive with a SATA Cable. Basically (looking at the pictures), you can only have one drive connected to the Serial IDE port. Each pair of ports (every 2 ports) form one channel.
Serial IDE also has a few possibilities:
* Primary Master, also called SATA1.
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