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

Define top-down testing, Define top-down testing. System developed star...

Define top-down testing. System developed starting from most general modules. Testing begins from the most general module.

What do you mean by configuration management, Q. What do you mean by Config...

Q. What do you mean by Configuration Management? Because of several reasons software changes during its life cycle. Consequently of the change made multiple versions of the sof

What are the drawbacks of rad model, Question 1 . What are the drawbacks of...

Question 1 . What are the drawbacks of RAD Model Question 2 . Explain why reliability is more important than efficiency? Question 3 . What are the activities of funct

Timeline chart, how to make timeline chart for timetable generation system

how to make timeline chart for timetable generation system

What is upwardly compatible software, "Upwardly compatible software" is sof...

"Upwardly compatible software" is software that is compatible with a later or more difficult version of itself. For example, an upwardly compatible software is able to occur files

What is the advantages of iterative model, What is the advantages of Iterat...

What is the advantages of Iterative model This model is useful when less manpower is available for software development and release deadlines are tight. It's best suited for in

Explain the steps used in in system analysis, Question 1 A) If you are a s...

Question 1 A) If you are a software engineer you must be expert in the field of hardware, software  and also database. It has been listed by the industry professionals that time a

What is a real time system, What is a Real time system? Real time syste...

What is a Real time system? Real time system is a software system in which the correct functionalities of the system are dependent upon results formed by the system and the tim

Object Oriented modelling, Perform analysis and design of the Vehicle Contr...

Perform analysis and design of the Vehicle Control Unit software using UML, and document all results obtained from each of the following tasks: 1. Requirements analysis including:

What are the benefits of using stored procedures, What are the benefits of ...

What are the benefits of using Stored Procedures? - They help in reducing network traffic and latency which in turn boosts application performance. - They assist in promotin

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