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

Discuss the reuse of software at different levels, Question 1 Discuss the ...

Question 1 Discuss the Limitation of the linear sequential model in software engineering Question 2 What is Software reliability? Why reliability is more important than effic

Why do dns root servers hold entries for two-level, QUESTION - Name Service...

QUESTION - Name Services (a) Illustrate with help of a diagram the results of a DNS lookup and an ARP lookup assuming we are using IPv4. (b) Why do DNS root servers hold en

Frame diagrams, We discussed the importance of framing a problem in order t...

We discussed the importance of framing a problem in order to understand the problem better and be able to develop a solution more quickly and easily. In this homework, you are ask

IEEE 802.3, what is meant by 345 rule in IEEE 802.3 ?

what is meant by 345 rule in IEEE 802.3 ?

System Analysis and Design, Hello Sir, i want help in my assignment. UNIT n...

Hello Sir, i want help in my assignment. UNIT name: System analysis and design

Determine the meaning of vertical partitioning, Determine the meaning of ve...

Determine the meaning of vertical partitioning? Vertical partitioning often called factoring suggests that the control and work should be distributed top-down in program struct

Types of software organization, How many types of software organization? Ex...

How many types of software organization? Explain each organization style with a suitable example? What are the factors that influence the group? Write short notes on the stak

What is a state transition diagram, What is a state transition diagram? ...

What is a state transition diagram? State transition diagram is basically a collection of states and events. The events cause the system to change its state. It also show what

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