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

Iterative enhancement and evolutionary development model, Q. Differentiate ...

Q. Differentiate between iterative Enhancement Model and Evolutionary Development model. Ans. Iterative Enhancement Model: This model has the similar phases as the waterfall

Defect amplification model with no review, How can we know about to divide ...

How can we know about to divide numbers from total error from which half passed through error and half passed to amplified and how to generate defect efficiency?

Describe design walk throughs and critical design review, Q. Describe desig...

Q. Describe design walk throughs and critical design review? Ans. A design walkthrough is a excellence practice that allows designers to acquire an early validation of desig

Define brooks law, Define Brooks law. Software was delivered late, was ...

Define Brooks law. Software was delivered late, was not reliable, cost various times the original estimates and often exhibited poor performance characteristics.

Explain scm, What is SCM? Software Configuration Management is a set of...

What is SCM? Software Configuration Management is a set of activities carried out for identifying, organizing and controlling alters throughout the lifecycle of computer softwa

Calculate the information flow index of individual modules, Q. For the stru...

Q. For the structural chart given in fig.1 calculate the Information Flow index of individual modules as well as whole software. Total information flow = IF (main) + IF (A

Explain evolutionary development model, Evolutionary Development model. ...

Evolutionary Development model.  Evolutionary Development Model : Evolutionary development model resembles iterative enhancement model. The similar phases as defined for the w

Use case realization, Develop a domain model for the Case Study. Express yo...

Develop a domain model for the Case Study. Express your model with a class diagram, showing any inheritance and compositional relationships. For each of the two selected most es

What are the debugging programs, Q. What are the Debugging programs? De...

Q. What are the Debugging programs? Debugging programs:-A program which runs simultaneously with the program under test and provides commands to examine memory and registers st

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