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XVI DMA and Bus Mastering
Going back to the CPU
and using interrupts to move data from one
sub-system to another sub-system is not
very efficient. The solution comes from the use
of Direct Memory Access (DMA) channels.
By creating DMA, designers
enabled devices to cut out speaking directly
with CPU, leading to increased performance.
DMA channels were created along with the appropriate
circuitry to control them. This is another example
of circuitry that was absorbed into the chipset.
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CertiGuide to A+ (Core Hardware) (http://www.CertiGuide.com/aplush/) on CertiGuide.com
Version 1.0 - Version Date: December 6, 2004
Adapted with permission from a work created by Tcat Houser.
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