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

Name the functionality which wasn''t listed in requirements, What do you do...

What do you do if you have provided functionality which wasn't listed in requirements? - If functionality isn't necessary to purpose of the application, it must be removed.

Define data dictionary, Define Data Dictionary. The data dictionary is ...

Define Data Dictionary. The data dictionary is defined as an organized collection of all the data elements of the system with accurate and rigorous definitions so that user and

Function module can be called from a transaction screen, A function module ...

A function module can be called from a transaction screen outside an ABAP/4 program. Yes, a function module called from transaction screen.

State about the software requirements specification, State about the Softwa...

State about the Software Requirements Specification This document is produced as output of requirement analysis.  Requirement analysis involves obtaining a clear and thorough

What is software maintenance and cocomo model, What is software maintenance...

What is software maintenance? Software maintenance is a set actions in which program are customized after it has been put into use. COCOMO model :- COnstructive COst MOd

Test-driven software development, A) What is test-driven software developme...

A) What is test-driven software development? Why test-driven software development is significant in agile development approach?   B) Explain how the following software develo

What is structured programming and why is it important, What is structured ...

What is structured programming and why is it important? Structured programming is a programming which was coined in the late 1960's to mean programming without using go to stat

What is black box and white box testing techniques, Software Project Manage...

Software Project Management 1. What is black box and white box testing techniques? 2. Describe different roles of the software development? 3. List out different project

Explain the persistent class maps to one relational table, Explain the pers...

Explain the persistent class maps to one relational table In most of cases, persistent class maps to one relational table (keeping aside inheritance issue, for the moment). In

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