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2 cards from this section. Quick, good the night before a test.
What is Burst Transfer Mode?
Think about how data moves in one big chunk.
What happens to the CPU during a DMA transfer?
Visualize a pause button being pressed.
What does DMA stand for?
Remember, it’s about direct access to memory!
In which mode does the CPU not change its context during data transfer?
Context switching is connected to CPU interruption.
Assume a system using Burst Transfer Mode needs to transfer 10 MB of data with a 1000-byte bus. Calculate how many transfer cycles will be required.
Convert MB to bytes first!
During a Cycle Stealing transfer, if the CPU has 4 tasks to perform with a transfer taking 2ms each, what is the impact on tasks completion time?
Consider how much 'waiting' is involved with each transfer.
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