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

List the process maturity levels in seis cmm, List the process maturity lev...

List the process maturity levels in SEIs CMM. Level 1: Initial - Few processes are explained and individual efforts are taken. Level 2:Repeatable - To track cost schedule an

Explain in detail about system testing, Explain in detail about system test...

Explain in detail about system testing. System testing Stress testing Performance testing Security testing

Library housekeeping software, Library Housekeeping Software: The mark...

Library Housekeeping Software: The market is flooded with a variety of packages specially designed to support library housekeeping operations such as acquisitions, cataloguing

What does software engineering means, What does software engineering means ...

What does software engineering means ? Software engineering defined as a discipline in which theories, methods and tools are used to develop professional software.

What is configuration management, What is configuration Management? Sof...

What is configuration Management? Software Configuration management (SCM) is the task of tracking and controlling alters in the software. Configuration management practices con

Distinguish among verification and validation, Distinguish between verifica...

Distinguish between verification and validation. Verification is the set of activities that ensure that software properly implements a specific function. Validation is a differ

State the defined level of maturity model, Level 3 (Defined) The org...

Level 3 (Defined) The organisation satisfies all the requirements of level-2. Atthis maturity level, the softwaredevelopmentprocesses arewell defined, managed and documented

What are the advantages and disadvantages of size measure, What are the adv...

What are the advantages and disadvantages of size measure? Advantages: Artefact of software development which is simply counted. Many existing methods use LOC as a key input. A

Determine the problems of software maintenance, Determine the problems of s...

Determine the problems of software maintenance Software maintenance has the below problems: i)  It is very cumbersome to analyse and understand code written by somebody.

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