What is an ATAPI device? What is ATAPI?

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An IDE bus controller on the motherboard.

The interface of the IDE on the motherboard can be divided into IDE1

IDE2 is the main IDE channel.

IDE1 main disk. The slave disk, the primary disk can be connected to the hard disk or the second hard disk.

i.e. from the disk. Secondary IDE channel.

IDE2 main disk. The slave disk and the master disk can be connected to IDE optical drives and other equipment.

or a second optical drive.

i.e. from the disk. Close redundant IDE channels.

Speed up boot up.

Computer boot detection.

Some IDE channels can be shielded.

IDE Channel Properties - Advanced Settings - Device Device Type.

Set Auto-Detect to None, so that it is disabled.

Start without checking these devices.

The computer boots up significantly faster.

But there are drawbacks.

When changing to other IDE devices, hard disks, or optical drives.

The device will not be found.

The reason is that you disable those redundant IDE channels.

I don't know if you understand, I hope it helps you.

Brand model: Huawei MateBook D15

System: Windows 10

The IDE ATA ATAPI Controller is an extension of the parallel ATA interface within the computer. ATA is also known as the IDE interface, ATAPI is the industry standard ATA interface for CD *** and other drives.

ATAPI is a software interface that adapts SCSI ASPI commands to the ATA interface, which makes it easier for optical drive manufacturers to adapt their high-end CD drive products to the ATA interface. ATA ATAPI interface drivers are also commonly referred to as enhanced IDE (EIDE) interface drivers, which are extensions to the IDE interface. The feature is that it is faster.

The computer controller consists of a program counter, an instruction register, an instruction decoder, a timing generator, and an operation controller. The controller is the main command device that controls the starting, speed regulation, braking and reversing of the motor by changing the wiring of the main circuit or control circuit and changing the resistance value in the circuit in a predetermined order. It consists of counters, instruction registers, instruction decoders, sequencers, and operation controllers in the program.

Data buffering: Due to the slow speed of the IO device and the high CPU and memory rates, buffers must be installed in the controller. In the output, buffers are used to temporarily store data from the host at high speed, and then the data in the buffers is transferred to the IO device at the rate of the IO device.

At the time of input, the buffer is used to temporarily store the data sent from the IO device. After receiving a batch of data, the data in the buffer is transferred to the host at high speed.

is a controller in Device Manager.

An extension of the parallel ATA interface within the computer, ATA is also known as the IDE interface, ATAPI is the industry standard ATA interface for CD*** and other drives.

ATAPI is a pure software interface that adjusts SCSI ASPI commands to the ATA interface, making it easier for CD ROM manufacturers to tune their high-end CD drive products to the ATA interface.

ATA ATAPI interface drivers are also commonly referred to as enhanced IDE (EIDE) interface drivers, which are extensions of the IDE interface and are faster.