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Ultra Direct Memory Access (UDMA) is just an advanced, updated version of Direct Memory Access. It introduced features such as double transition clocking (similar to DDR used with memory) and CRC checks.

DMA offered speeds up to 16.7 MB/s whereas UDMA offered speeds up to 133 MB/s per channel (UDMA Mode 6).

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Q: What is the difference between DMA and UDMA?
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Related questions

How can you tell if your motherboard chipset supports ultra dma mode?

1. * Q06: How can I tell if my motherboard supports Ultra DMA? A06: Pentium motherboards that have the Intel TX Chipset, Pentium II motherboards starting with the Intel LX, BX and subsequent Intel Chipsets have UDMA capability. The chipset is displayed on system startup, which is called CMOS Setup. If unsure, consult system or motherboard documentation or manufacturer for chipset and UDMA performance verification.


What is the population of Udma?

The population of Udma is 8,144.


What dma channel is used to cascade into the lower 4 dma channels?

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Difference between programmed inputoutput scheme and direct memory access scheme for data transfer?

explain at least three main differences between the programmed input/output scheme and direct memory access scheme for data transfer. also suggest one situation where programmed input/output will be preferable over direct memory access.


What does the appreviation UDMA stand for?

The abbreviation UDMA stands for Ultra Direct Memory Access. The Ultra Direct Memory Access is a mass storage interface and is common in computers and other electronic devices.


Method of transferring data between the hard drive and memory that involves the cpu?

DMA


When was DMA Distribuidora created?

DMA Distribuidora was created in 1950.


When was DMA - magazine - created?

DMA - magazine - was created in 1993.


When did DMA - magazine - end?

DMA - magazine - ended in 2003.


What types of operations is DMA used to accelerate?

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Does a DMA channel bypass the CPU?

Yes, DMA does bypass the CPU.


How is DMA different that busmastering?

DMA is the same thing as bus-mastering.