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

Explain walk-through, Explain Walk-through? Ans) A walk-through (in soft...

Explain Walk-through? Ans) A walk-through (in software QA) is a casual meeting for evaluation or informational purposes. A walk-through is also a method at an abstract level. It

Describe the advantages of proper inheritance, Describe the advantages of p...

Describe the advantages of proper inheritance. The biggest advantages of proper inheritance are:  a.) substitutability and b.) extensibility.

When must a function throw an exception, When must a function throw an exce...

When must a function throw an exception? A function must throw an exception when it's not able to fulfil its promise. As soon as function detects a problem which prevents it

What are the tools of environmental model, What are the Tools of environme...

What are the Tools of environmental  model (i)  Statement of purpose: It indicates basic objectives of system. (ii)  Event list: It describes different events of system

Draw dfd for the given requirement, A store is in the business of selling p...

A store is in the business of selling paints as well as hardware items. A numeral of reputed companies supplies items to the store. New suppliers are able to also register with the

Define software prototyping, Define software prototyping. Software prot...

Define software prototyping. Software prototyping is explained as a rapid software development for validating the requirements.

Case study : online bookshop system, A major book retailer is planning to d...

A major book retailer is planning to develop a computer system to handle their new online bookshop: BooksUniverse.com. You have been chosen to do the analysis and design using Obje

Explain the software measurement, Define software measurement. A softw...

Define software measurement. A software measurement is a procedure or way that applies software measures to a class of software engineering objects to achieve a predefined goa

Network Technology, How can you create a file named -i? Which techniques do...

How can you create a file named -i? Which techniques do not work, and why do they not work? How can you remove the file named -i?

Pros and cons of adding audio directly to the timeline, Question: Audio...

Question: Audio and Video Integration in Flash MX 2004 Professional. What sound formats does Flash MX 2004 support? (incl. if you have Quicktime or later installed on your comp

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