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

What is the use of knowledge of risk acceptance to engineers, What is the u...

What is the use of knowledge of risk acceptance to engineers?  The past experience and historical data give better information about safety of products designing there are stil

Concepts of the object-oriented paradigm, To develop software of lasting qu...

To develop software of lasting quality you have to lay down a solid architectural foundation that is resilient to change. Modelling is at the heart of the development of good quali

What is test data generators, Q. What is Test data generators? This is...

Q. What is Test data generators? This is a difficult one as well as at least for the present is one for which no general solution exists. One of the practical problems with te

Driven development, what is driven development?give example what benifit of...

what is driven development?give example what benifit of driven development

The advantages of using these specific languages of srs, What are the advan...

What are the advantages of using these specific languages of SRS?      The major benefit of using a natural language is that both client and superior understand the language. T

What is delphi model, What is Delphi model? In Delphi method, a number ...

What is Delphi model? In Delphi method, a number of parameters to be considered based on as experts estimates. The group estimate is taken as on  an average of the weighted

Determine ways to handle concurrency, How to handle concurrency:  Mech...

How to handle concurrency:  Mechanisms Locks Semaphores Monitors Synchronized methods Methods Deadlock avoidance Verification Sim

Describe the importance of function point, Q. Describe the Importance of fu...

Q. Describe the Importance of function point? - This is independent of the languages tools or else methodology used for implementation. - They are able to be estimated from

The problems that are faced during maintenance of software, Discuss some of...

Discuss some of the problems that are faced during maintenance of software. The problems are:  -  Often another person or group of persons working over the years in isolat

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