Ultra DMA ⇝
ATA-4
<storage>
(Or "Ultra DMA", "UDMA", "Ultra-ATA", "Ultra-DMA/33") A development of the Advanced Technology Attachment specifications which gives nearly twice the maximum transfer rate of the ATA-3 standard (PIO Mode 4).
ATA-4 Extensions Ultra DMA/33 Synchronous DMA Mode maximum burst transfer rates:Mode Cycle Time Transfer Rate ns MB/s 0 235 16 1 160 24 2 120 33This is achieved by improving timing windows in the protocol on the ATA interface; reducing propagation delays by pipelining data transfers and transferring data in synchronous (strobed) mode. Developed by Quantum Corporation, ATA-4 has been freely licensed to manufacturers and is supported by Intel Corporation.
Last updated: 1998-09-30
Nearby terms:
ATA-2 ♦ ATA-4 ♦ Atanasoff-Berry Computer ♦ Atanasoff, John Vincent
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