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 the alpha testing and beta testing, Alpha testing and Beta testing ...

Alpha testing and Beta testing Alpha testing is conducting acceptance testing in the environment where the application was formed. It is done by the customer. Beta testing is c

What is the purpose of timeline chart, What is the purpose of timeline char...

What is the purpose of timeline chart? The purpose of the timeline chart is to emphasize the scope of the individual task. As set of tasks are given as input to the timeline ch

What is bottom-up strategy, Bottom-up approach, as the name suggests, is th...

Bottom-up approach, as the name suggests, is the differing of the Top-down method. This process begins with building and testing the low level modules first, working its way up

How print statements used in software testing, Q. How Print statements used...

Q. How Print statements used in Software testing? Print statements:-The standard print statement in the language being utilized is sprinkled throughout the program to output va

What are the common activities in design process, What are the common activ...

What are the common activities in design process? i. System structuring - The system is subdivided into principle subsystems components and communications among these subsystem

Explain the bottom-up approach, What is bottom-up approach? System deve...

What is bottom-up approach? System developed beginning  from detailed modules. Testing begins from the detailed modules and proceeds up to the higher levels of hierarchy.

Scenario easy travel singapore ets, select alife cycle model that you would...

select alife cycle model that you would follow during the devolpment of the easy travil singapore system. give an outline description of thise life cycle and justify your chice of

Some important steps while doing testing, Some Important Steps while doing ...

Some Important Steps while doing performing testing The below objectives are to be kept in mind when performing testing: i)  It should be done with the intention of finding

State in brief about evolutionary prototyping, Explain Evolutionary prototy...

Explain Evolutionary prototyping Objective: The principal objective of this model is to deliver the working system to the end-user. Example-AI systems. Advant

Elicitation, explain the goal oriented requirement elicitation process with...

explain the goal oriented requirement elicitation process with a neat sketch

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