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

Cairs library management system , CARS-LMS: In this section let us try...

CARS-LMS: In this section let us try to learn about a different software package, which is commonly used in some of the libraries abroad. The package is known as CAIRS/LMS or

Explain function points, Function points: Function point calculates the fu...

Function points: Function point calculates the functionality from the user point of view, that is, on the basis of what the user request and receives in return. Thus, it deals wit

Write the steps followed in testing, Write the steps followed in testing? ...

Write the steps followed in testing? i. Unit testing - The individual components are tested in this type of testing. ii. Module testing - Related collection of independent c

What are basic key process areas in cmm, Q. What are basic Key process area...

Q. What are basic Key process areas in CMM? Ans) Key Process Areas (KPAs) adds the areas an organization could focus to improve its software process to the next level. Except f

What is fault, A manifestation of an error in software. A fault, if encount...

A manifestation of an error in software. A fault, if encountered, might cause a failure.

Explain agent-oriented programming languages, Question: (a) Name two a...

Question: (a) Name two agent-oriented programming languages. (b) Distinguish between communication protocols and interaction protocols for agent systems. Give two example

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

Evaluate the agresti-card-glass metrics, Question 1: We have a small sy...

Question 1: We have a small system with a call graph as given below. Consider that each vertex is a module. All modules are new (i.e., n = n0) Also consider that the number of

What are the testing strategies for conventional software, What are the var...

What are the various testing strategies for conventional software? i. Unit testing ii. Validation testing. iii. Integration testing. iv. System testing.

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