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 the software design process, What is the work product of software d...

What is the work product of software design process and who does this? A design model that encompasses architectural, component level, interface and their representations is t

What does validation represent, What does Validation represent? Validat...

What does Validation represent? Validation shows the set of activities that ensure that the software that has been built is satisfying the customer needs.

What is software requirement specification, What is Software requirement Sp...

What is Software requirement Specification (SRS)? Software Requirement Specification Document is the output of requirement examines stage of the software development life cycle

Explain in detail about the real time systems, Explain in detail about the ...

Explain in detail about the real time systems. Hard and soft real time systems. Real time and high performance. Real-Time control. Real time software design

Explain throw-away prototyping, Throw-away prototyping Objective: ...

Throw-away prototyping Objective: The principal objective of this model is to validate or to derive the system requirements. It is developed to reduce requir

Find the degree of capability of software reliability model, Q. Define capa...

Q. Define capability. What are the quantities that determine the degree of capability of a software reliability model? Ans: Capability demotes to the ability of the model to

What are the types of software system requirements, What are the types of S...

What are the types of Software system requirements? Functional requirements: Services the system should give. Non-functional requirements: Constraints on the services.

What is entity, What is Entity  It is most elementary thing of an organ...

What is Entity  It is most elementary thing of an organisation about which data has to be maintained. Each entity has unique identity. It's represented by rectangular box with

Explain change control, Problem 1 Explain change control? Write down th...

Problem 1 Explain change control? Write down the steps followed for change control Problem 2 Explain the concept of Baselines with reference to software configuration m

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