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

Distinguish between alpha and beta testing, Distinguish between alpha and b...

Distinguish between alpha and beta testing.  Alpha and beta testing are the types of acceptance testing.  Alpha test: The alpha testing is attesting in which the version o

Implementing an erp system at hawkins cookers ltd, Question : (a) What ...

Question : (a) What are the main characteristics of an ERP system? List the benefits and disadvantages of implementing an ERP system at Hawkins Cookers Ltd. (b) Explain the

Explain big-bang testing, Big-Bang Testing : In this all the modules after ...

Big-Bang Testing : In this all the modules after unit testing are joint and tested in one go. The problem with this type of testing is debugging of errors.

Define object in software engineering, Q. Define Object in Software Enginee...

Q. Define Object in Software Engineering? Object:- An object is something which is capable of being seen, touched or sensed. Each object has certain distinctions or attributes

What is oo system testing, OO system testing is actually identical to its c...

OO system testing is actually identical to its counterpart in the procedural environment.

P, a simple text processing program with all essential functions (open and ...

a simple text processing program with all essential functions (open and save text documents, insert and delete text, search for words). We assume that text read from a file is stor

Solution manual, i need solution manual for software engineering |10 editio...

i need solution manual for software engineering |10 edition by ian Sommerville

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