In a dma employed system, an i/o device has a data transfer rate of 100kbps and wants to transfer a block of 256 bytes where the data are transferred two bytes at a time. in the same system, bus control transfer takes 100 ns each way, i. e., from i/o device to processor or vice versa. the bus cycles takes 200 ns.

a. how long would the device tie up the bus when transferring the block in a burst mode, i. e., the dma interface gains bus mastership prior to the start of a block transfer and maintains control of the bus until the whole block is transferred?

b. repeat the calculation for cycle-stealing mode.

assuming you are in the home page.

1) go to the upper right hand corner

2) click on your "profile picture"

3) go down to "edit profile"

4) it should be titled as "edit your profile", click on "profile picture"

5) choose a file

6) press "change"

you're profile picture is updated

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