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Is ide and dma the same thing?

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Anonymous

17y ago
Updated: 8/16/2019

No,

IDE stands for Integrated Drive Electronics

A hardware interface widely used to connect hard disks, optical discs and tape drives to a PC. Introduced in 1986 with 20MB of storage, capacities increased a thousandfold in less than two decades. Compared to the SCSI interface, IDE has been the more economical choice.

(Direct Memory Access) Specialized circuitry or a dedicated microprocessor that transfers data from memory to memory without using the CPU. Although DMA may periodically steal cycles from the CPU, data are transferred much faster than using the CPU for every byte of transfer. On PCs, there are eight DMA channels commonly used as follows. Most sound cards are set to use DMA channel 1. See PIO mode.

DMA Used for

0 8-bit transfer

1 8-bit transfer

2 Floppy disk controller

3 8-bit transfer

4 Cascaded from 0-3

5 16-bit transfer

6 16-bit transfer

7 16-bit transfer

DMA Disk Transfers There are various modes of data transfer on IDE disk drives. The PIO modes use the CPU, and the DMA modes bypass the CPU.

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Wiki User

17y ago

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