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 version description document, Explain version description document ...

Explain version description document (VDD)? Ans) Version description document (VDD) is a document that accompanies and signifies a given version of a software product. Typically

Discuss the system quality attributes, Question 1 What are the advantages ...

Question 1 What are the advantages and disadvantages of layered systems? Question 2 Discuss the system quality attributes Question 3 Discuss the six components of

Black box and white box testing, I am not properly understanding the basis ...

I am not properly understanding the basis difference between black box testing and white box testing. Please explain in simple way and with some example so that I can easily under

Differentiate between application and system software, Question: (a) Di...

Question: (a) Differentiate between application software and system software. (b) Mr. Smith would like to know which type of computer is more appropriate to process the inf

Explain the limitations of testing, Q. Explain the limitations of testing? ...

Q. Explain the limitations of testing? Ans: Though testing is an significant part of system development and leads to a verified, valid and efficient system it as well faces s

What is a cohesive module, What is a cohesive module? A cohesive module...

What is a cohesive module? A cohesive module performs only "one task" in software procedure with few interaction with other modules. It means cohesive module serve only one thi

Explain the purpose of an outer join, (a) What is a view? (b) What is ...

(a) What is a view? (b) What is the implication of creating a view with the select * statement in the view definition? (c) Make reference to the relational schema given in

What is structure chart, Q. What is Structure chart? A structure chart ...

Q. What is Structure chart? A structure chart is a top-down modular design tool construct of squares representing the different modules in the system as well as lines that conn

The functional requirement for a library management system, Describe the fu...

Describe the functional requirement for a Library management system ?

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

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