two fetch-execute cycles, Software Engineering

Assignment Help:

Consider an 8-bit system with 32 memory locations (numbered from 0 to 31) and 8 different instructions. Assume op code for "Load Accumulator" instruction is 510 and for "Add" instruction is 210. At this moment, the program counter register PC contains the value 00100 and is about to increment, memory locations contain the following values:   

Address Contents
01101   00110110
01100   01110100
01011   10111000
:
00110   01001100
00101   10101011
00100   01111000

Perform two fetch-execute cycles, present each step of the cycles and the contents of each special-purpose register at the beginning and at the end of each step of the cycles in binary. If you believe there is no information on the contents of a particular register, indicate it as [unknown] (e.g., MDR[unknown]). If overflow occurs, the MSB is stored in a single-bit flag register and not counted in Accumulator. Express the final contents of Accumulator in both binary and decimal. For your answer, use the following table (two first lines are given as sample):

Step

PC

MAR

MDR

IR

A

PC→MAR                beginning

00101

[unknown]

[unknown]

[unknown]

[unknown]

                                          end

00101

00101

[unknown]

[unknown]

[unknown]


Related Discussions:- two fetch-execute cycles

State the technique pilot used in software engineering, State the technique...

State the technique Pilot used in software engineering With this approach, new system is introduced into one part of the company (for example into one warehouse of a supermark

Iterative Enhancement Model, what is the advantage of Iterative Enhancement...

what is the advantage of Iterative Enhancement Model in developing a system?

What are dynamic testing tools, What are dynamic testing tools?  Dynami...

What are dynamic testing tools?  Dynamic testing tools:  1: coverage analyzers (execution verifiers 2: output comparators 3: Test data generators: 4:  Test file gen

#, Write the algorithm to print at list of numbers from 1 to 5 and there s...

Write the algorithm to print at list of numbers from 1 to 5 and there square

Defining a prototype on the overall cost, Describe the effect of defining a...

Describe the effect of defining a prototype on the overall cost of the software project? The prototyping model: In this model, a prototype (an previous approximation of a fin

Define the process of requirements gathering tools, Define the process of R...

Define the process of Requirements Gathering Tools Requirements gathering is an art. Person who gathers requirements must have knowledge of what and when to gather information

DFD AND DATA DICTIONARY, Hoosier Burger''s food ordering system dfd and dat...

Hoosier Burger''s food ordering system dfd and data dictionary

Relationship between people and effort, Ask question #Minimumreal time exam...

Ask question #Minimumreal time example 100 words accepted#

What is software requirement specification, Q. What is Software requirement...

Q. What is Software requirement Specification (SRS)? Why is it important? List the characteristic of a good quality SRS? Ans: (SRS) Software Requirement Specification Documen

Determine the importance of software engineering, Importance of Software En...

Importance of Software Engineering As the application domains of software are becoming complicated and design of big software without a systematic method is virtually impossib

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd