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Consider the following specifications of a system, then answer the question using detailed steps: A real-time system receives data through an I/O device, the
Consider the following specifications of a system, then answer the question using detailed steps: A real-time system receives data through an I/O device, the CPU processes the data, then the results of the processing are transferred to system memory. The I/O device, the CPU, and the memory controller are all on the same system bus, which runs at 1MHz. The CPU runs at 5 MHz. Each bus transaction (transfer) between any two devices on the bus takes 4 bus cycles, 1 of which is used to transfer data, and the remaining cycles are used by the bus protocol. The bus has 32 data lines, transferring 32 bits per data-transfer cycle. The I/O device receives 1024 bytes at a time. While processing the received data, for each received byte, the CPU generates 4 bytes. Only generated data is transferred from the CPU to system memory. If the I/O device receives new data at a rate of 100 times per second (1024 bytes each), estimate the required CPU cycles that can be spent processing each byte without violating the real-time requirements? Assume that the memory is fast enough to handle any requests received by the memory controller.
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