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

Describe software maintenance and it types, Software Engineering 1. Giv...

Software Engineering 1. Give the two roles of the software process. 2. Describe software maintenance and it types. 3. What is RAD model and its phases? 4. What do you

Facilitated application specification technique, Q. Facilitated Application...

Q. Facilitated Application Specification Technique? A team oriented approach is developed for needs gathering and is called facilitated application specification Techniques FAS

How to compute the cyclomatic complexity, How to compute the cyclomatic com...

How to compute the cyclomatic complexity? The cyclomatic complexity can be calculated by any one of the following ways. 1. The numbers of regions of the flow graph correspon

What is the need for obtaining ISO 9000 certification, Q. What is the need ...

Q. What is the need for obtaining ISO 9000 certification? The need for obtaining ISO 9000 certification :- Confidence of customers in an organization improves when orga

Software design improve when we use object-oriented concept, Why does the ...

Why does the software design improve when  we use object-oriented concepts?    The software design improves when we use object-oriented concepts because 1. Object-orientatio

What is the best effort estimation for software phases?, Hello, I am a CS ...

Hello, I am a CS graduate and i just got a new job in a software development company. My boss assigned me to come up with what he called "the perfect pie chart" basically he says

What is software failure, What is Software failure? Software failure hap...

What is Software failure? Software failure happens when the software does not do what the user wants to see.

Explain coupling and cohesion, Coupling and Cohesion Data coupling ...

Coupling and Cohesion Data coupling - The data coupling is possible by parameter passing or data interaction. Control coupling - The modules share related control data

How does the risk factor affect the spiral model, Q. How does the risk fact...

Q. How does the risk factor affect the spiral model of software development? Ans: Risk Analysis phase is the most vital part of Spiral Model. In this phase all probable (and

What is common coupling, Q. What is Common coupling? Common coupling: ...

Q. What is Common coupling? Common coupling: With general coupling module A and module B have shared data. Global data areas are usually found in programming languages. Formu

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