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 are the common approaches in debugging, What are the common approaches...

What are the common approaches in debugging? Brute force method: The memory dumps and run-time tracks are explained and program with write statements is loaded to get clues to

Explain what is the resource discovery problem, Question: (a) Explain ...

Question: (a) Explain what is the resource discovery problem? (b) Distinguish between centralized (hybrid) and decentralized (pure) peer to peer network? (c) Give an e

Define graph matrix and connection matrix, Q. Define graph matrix and conne...

Q. Define graph matrix and connection matrix. Ans: Graph matrix: A graph matrix is a square matrix whose size that is a number of rows and columns is equal to the number of n

How do stubs and drivers are related to manual testing, How do stubs and dr...

How do stubs and drivers are related to manual testing? - Drivers and stubs are a part of incremental testing. - The two different techniques used in incremental testing are

Problems that are faced during maintenance of software, Q. Discuss some of ...

Q. Discuss some of the problems that are faced during maintenance of software? - Habitually another person or group of persons working over the years in isolation from each oth

Key process areas of capability maturity model (cmm), Key process areas of ...

Key process areas of Capability Maturity model (CMM) Effectiveness, Predictability and control of an organization's software processes are believed to get better as the organiz

Explain the boundary value analysis, What is Boundary value Analysis? ...

What is Boundary value Analysis? Boundary value analysis is a method in software testing where tests are designed for showing boundary values. The values will be on the edge of

What is evolutionary prototype, Evolutionary Prototype In this, prot...

Evolutionary Prototype In this, prototype is constructed to learn about software problems and their solutions in successive steps. Prototype is initially developed to satisf

What is function count, Function count:- It measures the functionality fro...

Function count:- It measures the functionality from the user point of view, that is, on the basis of what the user requests and receives in return. Therefore it deals with the fun

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