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 project estimation techniques, Question: a) List and explain t...

Question: a) List and explain three project Estimation techniques. b) During an estimation exercise, a work breakdown structure (WBS) is used as checklist for the activitie

Information storage and retrieval software, INFORMATION STORAGE  AND RETRI...

INFORMATION STORAGE  AND RETRIEVAL SOFTWARE: IBM (International Business Machines Corporation) was one of the earliest to invest money to develop software packages intended fo

What is the key process areas, What is the Key Process Areas SEI has a...

What is the Key Process Areas SEI has associated key process areas(KPAs) with every maturity level. KPA is an indicative measurement of goodness of software engineering functi

Explain structural testing, Testing that takes into account the internal me...

Testing that takes into account the internal mechanism [structure] of a system or component. Types contain branch testing, path testing, statement testing. Testing to insure eve

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

Important factors related to library storage operation, Important factors r...

Important factors related to library storage operation: It is essential to consider some important factors related to library and information storage and retrieval operations

Introduction to software testing, Derive input space partitioning tests for...

Derive input space partitioning tests for the BoundedQueue class with the following signature:

Define data objects and relationship, Define Data objects, attributes & rel...

Define Data objects, attributes & relationship. Data object: Representation of any collective  information that must be understood by software. It can be any external entity.

What is architectural evolution, What is architectural evolution? Archi...

What is architectural evolution? Architectural evolution is the method of changing a system from a centralized architecture to a distributed architecture as client server.

Explain the software prototyping, What is meant by software prototyping? ...

What is meant by software prototyping? Software prototyping is a process of producing a model for the software product. This is developed based on the recently known requiremen

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