Learn about the technologies behind the Internet with The TCP/IP Guide!
NOTE: Using robot software to mass-download the site degrades the server and is prohibited. See here for more.
Find The PC Guide helpful? Please consider a donation to The PC Guide Tip Jar. Visa/MC/Paypal accepted.
View over 750 of my fine art photos any time for free at DesktopScenes.com!

[ The PC Guide | Systems and Components Reference Guide | Motherboard and System Devices | System Resources | Direct Memory Access (DMA) Channels | DMA Channel Details By Number ]

DMA0

Channel Number: 0

Bus Line: No

Typical Default Use: Memory (DRAM) Refresh.

Other Common Uses: None; for system use only.

Description: This DMA channel is reserved for use by the internal DRAM refresh circuitry. Dynamic RAM (used for system memory on almost all PCs) must be refreshed frequently to make sure that it does not lose its contents. DMA channel 0 is used for this purpose and is not available for use by peripherals.

Conflicts: Most devices stay far away from DMA0, recognizing its use by the system. Beware however, as some devices actually offer DMA0 as an option. For example, some sound cards do. Do not use DMA0 for peripherals. If you have no devices set to use DMA0 but a conflict becomes apparent anyway, it could be a problem with your motherboard.

Next: DMA1


Home  -  Search  -  Topics  -  Up

The PC Guide (http://www.PCGuide.com)
Site Version: 2.2.0 - Version Date: April 17, 2001
Copyright 1997-2004 Charles M. Kozierok. All Rights Reserved.

Not responsible for any loss resulting from the use of this site.
Please read the Site Guide before using this material.
Custom Search