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

What things will you remember when making an interface, What things will yo...

What things will you remember when making an interface? - A class's interface must be sensible enough. It should act the way user expects it to. - It must be designed from t

Various attributes of cost drivers used in cocomo model, Various attributes...

Various attributes of cost drivers used in COCOMO model are: 1.  Physical attributes: These are concerned with needed characteristics of the software product being developed.

Draw a flowchart for pay no tax, A town comprise 5000 houses. Every house o...

A town comprise 5000 houses. Every house owner should pay tax based on the value of house. Houses over $200 000 pay 2% of their value in tax, houses over $100 000 pay 1.5% of their

Explain productivity, Productivity Productivity refers to metrics and c...

Productivity Productivity refers to metrics and calculates of output from production processes, per unit of input. Productivity P may be conceived of as a metrics of the techni

Explain testability, Explain Testability? Ans) (1) The degree to which a...

Explain Testability? Ans) (1) The degree to which a scheme or component facilitates the establishment of test criteria and the performance of tests to verify whether those crite

Give explanation about the software testing strategies, Give explanation ab...

Give explanation about the software testing strategies. A strategic approach to software testing. Verification and Validation. Verification means a set of work o

Explain product metrics, What is Product metrics? A quality metric shou...

What is Product metrics? A quality metric should be a predictor of product quality. Classes of product metric Dynamic metrics which are collected by measurements made

Why we use coverage analyzers, Q. Why we use Coverage analyzers? Cover...

Q. Why we use Coverage analyzers? Coverage analyzers (execution verifiers) A coverage analyzer is the most common and important tool for testing. It is often relatively simpl

Explain abstraction, Abstraction :- Abstraction allows one to concentrate o...

Abstraction :- Abstraction allows one to concentrate on a problem at some level of generalization without regard to irrelevant low level details; use of abstraction also allows one

What is the value of a testing group, What is the value of a testing group?...

What is the value of a testing group? How do you justify your work and budget? Testing is a method used for revealing defects in s/w and for establishing that the s/w has attai

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