DMA access to main memory is prioritized above processor access to main memory in almost all systems using DMA modules. Why?

Systems Architecture
7th Edition
ISBN:9781305080195
Author:Stephen D. Burd
Publisher:Stephen D. Burd
Chapter6: System Integration And Performance
Section: Chapter Questions
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DMA access to main memory is prioritized above processor access to main memory in almost all systems using DMA modules. Why?

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