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

Types of debugging techniques used in software testing, Name the types of ...

Name the types of debugging techniques used  in Software testing.   various debugging techniques are:- 1) Core dumps 2) Traces 3) Print statements 4) Debugging pr

What is a vertical microinstruction, What is a vertical microinstruction? ...

What is a vertical microinstruction? Ans) A vertical microinstruction is a microinstruction that states one of a sequence of operations required to carry out a machine language

Define capability maturity model, CMM is a strategy for enhancing the softw...

CMM is a strategy for enhancing the software process irrespective of the actual life cycle model utilized. SEI (Software Engineering Institute) of Carnegie-Mellon University develo

Explain the bath tub curve of hardware reliability, Q. Explain the bath tub...

Q. Explain the bath tub curve of hardware reliability? Ans: As indicated in the diagram below there are three phasing in the life of whichever hardware component that is burn

What is the use of knowledge of risk acceptance to engineers, What is the u...

What is the use of knowledge of risk acceptance to engineers?  The past experience and historical data give better information about safety of products designing there are stil

Describe about unit testing, Q. Describe about Unit Testing? Unit Testi...

Q. Describe about Unit Testing? Unit Testing: The unit testing is completed to test the individual module of the software. Test cases are designed to test the program functiona

Determine the use of architectural design, What is the use of Architectura...

What is the use of Architectural design? The Architectural design defines the relationship between major structural elements of the software, the "design patterns" that may be

What is meant by throw away prototyping, What is meant by Throw away Protot...

What is meant by Throw away Prototyping? Giving the user a system which is incomplete and then changing and augmenting it as the user requires become clear. The objective

Information storage and retrieval software, INFORMATION STORAGE  AND RETRI...

INFORMATION STORAGE  AND RETRIEVAL SOFTWARE: IBM (International Business Machines Corporation) was one of the earliest to invest money to develop software packages intended fo

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