Suppose that a microprocessor operates at 5MHz. How long does the bus cycle occupy, assuming no wait states are inserted?
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Suppose that a microprocessor operates at 5MHz. How long does the bus cycle occupy, assuming no wait states are inserted?
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- Consider a 32 – bit microprocessor, with a 16 – bit external data bus, driven by an 8 MHz input clock. Assume that this microprocessor has a bus cycle whose minimum duration equals four input clock cycles. What is the maximum data transfer rate for this microprocessor?If a CPU issues a 32-bit address on the address bus, and the computer uses the high-order 12 bits to access the memory map, with the remaining address lines going directly to memory: a) Exactly how many pages of memory does this computer have? b) What is the size of each page?5. Consider two microprocessors having 8- and 16-bit-wide external data buses, respectively. The two processors are identical otherwise and their bus cycles take just as long. (a) Suppose all instructions and operands are one byte long, by what factor do the maximum data transfer rates differ?
- For a microprocessor, if the total time of all positive cycles in 5 seconds is 2 seconds, and the Off time in every cycle is 0.335µs, (i) What is the frequency of its clock? (ii) What is the time taken to reset the microprocessor?suppose, a soft real-time system has 100 m bytes of program memory that is loaded at 75% 16M bytes of data memory that is loaded at 25% and 10 M bytes of stack area that is loaded at 50%. what is the total memory utilization?Suppose a DRAM memory has 4 K rows in its array of bit cells, its refreshing period is 64 ms and 4 clock cycles are needed to access each row. What is the time needed to refresh the memory if clock rate is 133 MHz? What fraction of the memory's time is spent performing refreshes?
- Suppose that we have a byte-addressable computer with 16-bit main memory addresses and 32 blocks of cache. Determine the size of the offset field if each block includes 8 bytes, and illustrate your work.3. If we have an 8 bit microcontroller that has 4kB of instruction memory starting at address 0x0000, and 2kB of data memory immediately above that, what is the next available byte in our address map?For a microprocessor to operate, let assume that it requires 2MB of RAM and 7MB of ROM. What is the minimum number of address lines the microprocessor must support? Draw a memory map of the system, assuming that the addresses for the RAM are below the addresses for the ROM.
- Can a specific physical address have more than two logical addresses? Give your opinion with examples. Suppose you have a microprocessor which has 16MB of total physical memory. In this case what would be the size of the address bus?Assume a RISC processor takes two microseconds to execute each instruction and an I/O device can wait at most 1 millisecond before its interrupt is serviced. What is the maximum number of instructions that can be executed with interrupts disabled?