The I/O processor has a direct access to …………………..
Homework Answers
The IO processor has Direct Access to memory.
Although it has Direct Access to peripherals as well as CPU but as it can operate independent of CPU to transfer data from memory 2 peripheral devices we may say that that it has Direct Access to memory.
It operates independent of CPU and transfers data from memory to peripheral devices when quick operations are needed.
In other operation it acts as a reserve or slave to master
cpu.
4B, 20%) compare performance of a Processor with cache vs. without cache. Assume an Ideal processor with 1 cycle memory access, CPI1 Assume main memory access time of 8 cycles Assume 40% instruct...
4B, 20%) compare performance of a Processor with cache vs. without cache. Assume an Ideal processor with 1 cycle memory access, CPI1 Assume main memory access time of 8 cycles Assume 40% instructions require memory data access Assume cache access time of I cycle Assume hit rate 0.90 for instructiens, 0.80 for data Assume miss penalty (time to read memory inte cache and from cache to Processor with cache processor) is 10 cycles >Compare execution times of 100-thousand instructions:
4B,...
Magnetic tape is a form of O A. Direct access media. O B. Random access media....
Magnetic tape is a form of O A. Direct access media. O B. Random access media. O C. Sequential access media. O D.Alphabetical access media.
29 pls clesr ans the average access time for the processor to access an item? 29ns...
29 pls clesr ans
the average access time for the processor to access an item? 29ns Question 29 7 pts Consider a byte-addressable computer with 24-bit addresses, a cache capable of storing a total of 64K bytes of data, and blocks of 32 bytes. If the computer uses direct mapping, the format of the memory address is as follows: bits for the tag field, bits for the cache block number, and bits for the block offset. Question 30 7 pts...
QUESTION 1. [14 marks] a) What is the main difference between programmed I/O and interrupt I/O?...
QUESTION 1. [14 marks] a) What is the main difference between programmed I/O and interrupt I/O? [4] b) During the initialization of programmed I/O, a test 1/0 command is issued by CPU. Explain the function of test I/O command. [4] c) What is the advantage of direct memory access (DMA) compared to programmed I/O? [4] d) When a DMA module takes control of a bus, and while it retains control of the bus, what does the processor do? [2]
The VAX/ VMS operating system makes use of four processor access modes to facili-tate the protection...
The VAX/ VMS operating system makes use of four processor access modes to facili-tate the protection and sharing of system resources among processes. The access mode determines:• Instruction execution privileges: What instructions the processor may execute• Memory access privileges: Which locations in virtual memory the current instruc-tion may access The four modes are as follows:• Kernel: Executes the kernel of the VMS operating system, which includes memo-ry management, interrupt handling, and I/ O operations• Executive: Executes many of the operating...
6. Memory Access Time [15 points] Consider a MIPS processor that includes a cache, a main...
6. Memory Access Time [15 points] Consider a MIPS processor that includes a cache, a main memory, and a hard drive. Access times of cache memory, main memory, and hard drive are 5 ns, 200 ns, and 1000 ns, respectively. Assume that cache memory is divided into instruction cache and data cache. Assume that data cache has a 90% hit rate. Assume that main memory has a 98% hit rate and hard drive is perfect (it has a 100% hit...
Number Name 3. Assuming no page fault on a page table access, what is the processor...
Number Name 3. Assuming no page fault on a page table access, what is the processor memory access time for the system depicted in the above figure, for a physical memory with 50ns read/write times? 4. Now, assume that the memory system has a translation look-aside buffer (TLB). The TLB requires 10 ns to determine a hit or mess. The physical memory system has an access time of 50ns. You may assume that page fault rate for the application is...
A particular I/O device provides a single byte of data to the processor every 45 ms....
A particular I/O device provides a single byte of data to the processor every 45 ms. What is the minimum required throughput of any bus that would connect this device to the CPU?
Consider a processor that has a 20-bit address and a 1K Byte Cache. The cache and...
Consider a processor that has a 20-bit address and a 1K Byte Cache. The cache and main memory are divided into blocks where each block is 256 Bytes. If direct mapping is used, what is the tag size of each block in cache and how many tag comparisons are made for a one-cache access? Repeat part (1) for fully associative mapping. Repeat part (1) for 2 way set-associative cache. For the direct map find out which of the following accesses...
A computer system was designed to have a good latest processor and I/O devices, however the...
A computer system was designed to have a good latest processor and I/O devices, however the designer of the computer did not put any RAM in it. The computer does have a hard disk of 1 tera-byte. Will this computer be able to execute programs? Explain giving justification in support of your answer.
4B, 20%) compare performance of a Processor with cache vs. without cache. Assume an Ideal processor with 1 cycle memory access, CPI1 Assume main memory access time of 8 cycles Assume 40% instructions require memory data access Assume cache access time of I cycle Assume hit rate 0.90 for instructiens, 0.80 for data Assume miss penalty (time to read memory inte cache and from cache to Processor with cache processor) is 10 cycles >Compare execution times of 100-thousand instructions:
4B,...
Magnetic tape is a form of O A. Direct access media. O B. Random access media. O C. Sequential access media. O D.Alphabetical access media.
29 pls clesr ans
the average access time for the processor to access an item? 29ns Question 29 7 pts Consider a byte-addressable computer with 24-bit addresses, a cache capable of storing a total of 64K bytes of data, and blocks of 32 bytes. If the computer uses direct mapping, the format of the memory address is as follows: bits for the tag field, bits for the cache block number, and bits for the block offset. Question 30 7 pts...
QUESTION 1. [14 marks] a) What is the main difference between programmed I/O and interrupt I/O? [4] b) During the initialization of programmed I/O, a test 1/0 command is issued by CPU. Explain the function of test I/O command. [4] c) What is the advantage of direct memory access (DMA) compared to programmed I/O? [4] d) When a DMA module takes control of a bus, and while it retains control of the bus, what does the processor do? [2]
Number Name 3. Assuming no page fault on a page table access, what is the processor memory access time for the system depicted in the above figure, for a physical memory with 50ns read/write times? 4. Now, assume that the memory system has a translation look-aside buffer (TLB). The TLB requires 10 ns to determine a hit or mess. The physical memory system has an access time of 50ns. You may assume that page fault rate for the application is...
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