Solve this question MIPS, check the attached screenshot; 1. This exercise is intended to help you understand the relationship between forwarding, hazarddetection, and ISA design. Problems in this exercise refer to the following sequence ofinstructions, and assume that it is executed on a 5-stage pipelined datapath:add r5,r2,r1lw r3,4(r5)lw r2,0(r2)or r3,r5,r3sw r3,0(r5)(a) If there is no forwarding or hazard detection, insert nops to ensure correct execution.(b) Repeat (a)but now use nops only when a hazard cannot be avoided by changing or rearranging theseinstructions. You can assume that register R7 can be used to hold temporary values in your modified code.

(a) Without forwarding or hazard detection, we need to insert nops to ensure correct execution.…

Answered: 1. This exercise is intended to help…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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1) What is the difference between the status and control flags? What are the status flags for the AEH+37H operation? 2) What is the aim of segmentation as well as physical address generation? Explain with a drawing and a numerical example? 3) What is the amount of the memory in each of the following cases? • All segments are • Overall memory is 4) Given the ES=3050H, SS=1298H, and CS-ABC3H, find the physical address for a) SP=2583H, b) DI=3399H, and c) IP=18F7H.
If you only use Stall, Forwarding and load ordering/code scheduling to overcome the data hazard howmany clock cycles you would need for executing above code sequence? Draw the datapath as well ascalculate the CPI. you will need to draw appropriate datapath showing the pipeline stages andhazard removal methods.
a) In the SRAM region, what is the corresponding bit-band alias address for the bit [4] of the memory address of 0 * 2000008 b) In the Peripheral region, if the value in the alias address 0 * 4200 0088 to 0 * 4200 008B was set to 0x00000001, what is the bit # and the address in the peripheral region that wants to set to 1?
3 a) Let us assume that the CS and IP values of the base and offset of an ISR are 1210h and 1010h. The ISR is 8 lines of code where each line takes 2 bits to be stored. At which address, shall we find the IRET instruction? b) Describe the process that would take place if an interrupt arises at the IR0 pin of 8259A while servicing an interrupt that arose at IR3 pin of 8259A. You are expected to refer to the 3 registers in particular.
MIPS: (a) What is total number of cycles to execute below code on 5-stage pipeline datapah? Assume you have full fast-forwarding scheme. (b) What is total number of cycles if you re-schedule the code to remove any pipeline hazards? lw $t1, 0($t0) lw $t9, 4($t0) add $t3, $t1, $t9 lw $t2, 8($t0) add $t7, $t1, $t2 sw $t7, 16($t0) lw $t5, 12($t0) add $t4, $t1, $t5 sw $t4, 20($t0)
You are given the following data about a virtual memory system:(a) The TLB can hold 512 entries and can be accessed in 1 clock cycle (1nsec).(b) A page table entry can be found in 100 clock cycles or 100 nsec.(c) The average page replacement time is 9 msec.If page references are handled by the TLB 99% of the time, and only 0.01%lead to a page fault, what is the effective address-translation time?
You are given the following data about a virtual memory system:(a)The TLB can hold 1024 entries and can be accessed in 1 clock cycle (1 nsec).(b) A page table entry can be found in 100 clock cycles or 100 nsec.(c) The average page replacement time is 6 msec.If page references are handled by the TLB 99% of the time, and only 0.01% lead to a page fault, what is the effective address-translation time?
Consider the following MIPS segment code when answering the questions below: sw $t5, 0($t2) sub $t3, $t1, $t6 lw $t1, 12($t5) or $t5, $t1, $t3 Consider running this code on the 5-stage pipelined processor that does not support forwarding and hazard detection. What is the total number of cycles required to execute this code? Consider running this code on the 5-stage pipelined processor that supports forwarding and hazard detection. What is the total number of cycles required to execute this code? How many stalls? How many forwards? What is ALU doing during cycle 7? Can we rearrange the code to minimize the number of cycles and speed up the execution?
Explain the term "pipeline flushing" and its role in maintaining correct execution in case of exceptions or mispredicted branches.
Consider the following two operations: (a) PC = PC + 4; (b) PC = PC + offset (offset is a positive or negative multiple of 4).Which of the following statements is true? a In the MIPS architecture, operation (b) is done by performing operation (a) as many times as required. b Operation (a) requires about 1/2 as much hardware to implement as does operation (b) c Operation (a) is simply done by replacing the right-most two bits of PC with 00. d Since (a) is a special case of (b), these two operations require the same hardware to implement.
A virtual address of 32 bits is passed on to the TLB. If the number of entries (number of cache lines) in the TLB are 32, what is the width of the Tag field in the TLB?
When it comes to a single data route architecture, what is the most important disadvantage?It is necessary to use several Multiplexors.The clock period is defined by the delay that is the longest.The JUMP instruction is not supported on this platform.Each datapath element can only execute one function at a time, and this is true at all times.

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