CS501 Advance Computer Architecture Assignment No 4 Spring June 2012 solution

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Assume that three I/O devices are connected to a 16-bit 100 MIPS CPU. The first device is a hard drive with a maximum transfer rate of 2MB/sec. It has a half word (16-bit) bus. The second device is a floppy drive with a transfer rate of 10KB/sec over 8-bit bus, and the third device is a keyboard that must be polled 25 times per second. Assuming that the polling operation requires 40 instructions for each I/O device, determine the percentage of CPU time required to poll each device and also state what you infer after calculating these percentages


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[URL="http://www.vugurus.info/2012/06/advance-computer-architecture-cs501.html"]CS501 Advance Computer Architecture Assignment No 4 Spring June 2012 solution
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