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Why DMA access to main memory is given higher priority than processor access to main memory?
Wiki User
∙ 12y ago
In a DMA while the data is transferred between the memory and the device, if it is stopped or interrupted by any other device like CPU, it would result into a Data loss, since DMA doesnt have a program counter unlike CPU which stores it current position. In CPU if it is interrupted, it suspends it s operation without any data loss. Hence DMA has a higher priority than CPU.
Wiki User
∙ 12y ago
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ransom access memory which is permenant
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32 bit processor can access 4294967296 bit memory adderss.
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