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

calculus, solve inequalities and graph the solutions: [z/25-1

solve inequalities and graph the solutions: [z/25-1]

Software myth, how does software myth affects software process

how does software myth affects software process

explain equivalence partitioning, Describe Equivalence Partitioning An...

Describe Equivalence Partitioning Ans) Input data of a program is separated into different categories so that test cases can be developed for every category of input data. The g

Explain how to define severity rating in your project, Explain how to defin...

Explain how to define Severity Rating in your project. Severity rating is a combination of three factors: - The frequency of the problem occurrence. It could be common / ra

What is cause-effect graphing, A testing method that aids in selecting, in ...

A testing method that aids in selecting, in a systematic way, a high-yield set of test cases that logically relates causes to effects to produce test cases. It has a useful side ef

Core architectural concepts and their interrelationships, Question: (a)...

Question: (a) Discuss on the core architectural concepts and their interrelationships. (b) A telecommunications company is looking for a software architect for one its maj

Describe the data abstraction, What does Data abstraction contains? A D...

What does Data abstraction contains? A Data abstraction is a named collection of data that describes a data object Eg: door Attributes: door type, Opening mechanism, Swing d

What is 4test, What is 4Test? 4Test is a test scripting language which ...

What is 4Test? 4Test is a test scripting language which is used by SilkTest to compose test scripts to perform automated tests. It's an object-oriented fourth-generation langua

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

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