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- In a main memory-disk virtual storage system, the page size is 1KByte and the FIFO algorithm is used for page replacements. A given program has been allocated three page frames in the main memory and it makes the following 16 memory references when it starts executing (the addresses are given in decimal):500, 2000, 2500, 800, 4000, 1000, 5500, 1500, 2800, 400, 5000, 700, 2100, 3500, 900, 2400 Fill in the contents of the three page frames after each memory reference in a table and calculate the hit ratio. Hint: denote by 'a' the page consisting of locations 0 through 1023 in memory. Similarly, b: 1024-2047, c: 2048-3071, d: 3072-4095, e: 4096-5119 and f: 5120-6143. Round to three decimal places.What is Translation Look-Aside Buffer used in paging? answer a)It is a memory that is searched when a page is not found in page table b)It is part of the physical memory to hold process control blocks c)It is a bank of special registers inside the processor d)It is an associative memory that can do parallel frame search in hardwareIf a program has 471 bytes and will be loaded into page frames of 126 byteseach. assuming the job begins loading at the first page (Page 0) in memory, andthe instruction to be used is at bvte 132. answer the following questionsa. How manv pages are needed to store the entire iob?b. Compute the page number and exact displacement for each of the byteaddresses where the desired data is stored.
- If a program has 471 bytes and will be loaded into page frames of 126 bytes each, assuming the job begins loading at the first page (Page 0) in memory, and the instruction to be used is at byte 132, answer the following questions: a. How many pages are needed to store the entire job? b. Compute the page number and exact displacement for each of the byte addresses where the desired data is stored.The control signal Ep or iEnableoutput allows the program counter to decrement its value. True False The control signal Ep or iEnableoutput sends the content of the program counter to the W bus. True False A tri-state buffer is needed for all data going to the W bus. True False In using 'assign' statement in Verilog, the left hand side must always be a register. True False In declaring a register in Verilog, the following format must be followed: reg [LSB:MSB] identifier; True FalseThe effective access time in a virtual memory system depends on the TLB hit rate but does not depend on whether the page table contains a valid translation for the page. O True O False
- The real mode of operation is the protected Previous page default mode is a control bus The real mode of operation is the protected mode of operation is use 32 bit offset address is a control bus A> Finish attempt... <5. Ifa program has 956 bytes and will be loaded into page frames of 150 bytes each, and the instruction to be used is at byte 332, answerthe following questions: a. How many pages are needed to store the entire job? b. Compute the page numberand exact displacement for each of the byte addresses where the data is stored. (Remember that page numbering starts at zero).On a simple paging system with 224 bytes of physical memory, 256 pages of logical address space, and a page size of 210 bytes. 1. How many bits are needed to store an entry in the page table (how wide is the page table)? Assume a valid/invalid 1-bit is included in each entry. 2. If the page table is stored in the main memory with 250nsec access time, how long does a paged memory reference take? 3. If the page table is implemented using associative registers that takes 95nsec. and main memory that takes 200nsec, what is the total access time if 75% of all memory references find their entries in the associative registers?
- Suppose a virtual memory address is 0x123456789012. Divide this address into the 4 different page table parts and the within page offset.An address space in the memory map starts at address Ox40000000 and ends at address O×40000FFE. What is the size of the space if the data size is 2 bytes? 16k bytes 4k bytes 2k bytes 8k bytesWrite a service routine which resets all elements of an array that resides in memory location from A000 H to A0FF H with DS equal to 0000 H. The service routine address is CS:IP where CS is 2000 H and IP is 0100H. Assume the interrupt type that is called is 50 (x8086- nano)