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

Time Line Chart for Online Shopping Management , Sir I need a Basic Ready m...

Sir I need a Basic Ready made Time Line Chart for Online Shopping Management Project Because I have to submit the Project Report on 8 April 2013 So can u provide some urgent help n

What are the challenges in software, What are the challenges in software?  ...

What are the challenges in software?  Copying with legacy systems. Heterogeneity challenge  Delivery times challenge

What is cocomo, Problem 1. Explain different roles of the software deve...

Problem 1. Explain different roles of the software development? 2. What is conflict management? Explain various causes for conflict 3. What is COCOMO? Explain COCOMO mode

Illustrate the method of user documentation, Illustrate the method of User ...

Illustrate the method of User documentation This usually comprises: -  How to load/run the software -  How to do a search   -  How to save files   -  How to do pri

Differentiate between circuit switching and packet switching, Question: ...

Question: (a) Differentiate between circuit switching and packet switching. (b) Using an example, explain the main parts that form a URL (Uniform Resource Locator). (c)

Explain acceptance testing, Testing conducted to verify whether or not a sy...

Testing conducted to verify whether or not a system satisfies its acceptance criteria and to enable the customer to verify whether or not to accept the system. Contrast with testin

What is a software package, QUESTION a) What is a software package? ...

QUESTION a) What is a software package? b) A lot of data is collected and stored on digital medium today. Organisations rely a lot on the data for their smooth running. Desc

What are the benefits of prototyping, What are the benefits of prototyping?...

What are the benefits of prototyping? i. Prototype uses as a basis for deriving system specification. ii. Design quality can be better. iii. System can be handled efficie

Importance of function point, Importance of function point:    This is ...

Importance of function point:    This is independent of the languages tools, or methodology used for execution. They can be estimated from requirement specification or desig

Define external coupling, Q. Define External coupling? External coupli...

Q. Define External coupling? External coupling: A form of coupling in that a module has a dependency to other module external to the software being developed or to a particul

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