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

Illustrate the symbols of a data flow diagram, Symbols of a data flow diagr...

Symbols of a data flow diagram  1. Data Flow Signifies the connectivity between various processes 2. Process   Performs some processing of input data 3. Ex

Draw an entity relationship diagram, Problem: (a) Draw an Entity Relat...

Problem: (a) Draw an Entity Relationship Diagram for the given case study. Show entities and relationships on the diagram (attributes should not be shown). Cardinality and op

Dfd, online admision application

online admision application

Define coupling, Define coupling. Coupling is the measure of the degre...

Define coupling. Coupling is the measure of the degree of interdependence among modules.

Explain about non-functional requirement for a software, Q. Explain about n...

Q. Explain about non-functional requirement for a software ? Ans) Nonfunctional requirements are the basic characteristics of the system which will not be expressed as function

Explain in detail about the real time systems, Explain in detail about the ...

Explain in detail about the real time systems. Hard and soft real time systems. Real time and high performance. Real-Time control. Real time software design

What are quality reviews, What are Quality reviews? This is the princip...

What are Quality reviews? This is the principal method of validating the quality of a process or of a product. A group examines part or all of a process or system and its do

Resource usage with reference to software reliability models, Q. Resource u...

Q. Resource usage with reference to software reliability models? Resource usage: It is linearly proportional to implementation time t and mean failures experienced μ. Let Xr

Explain document interchange standards, Document interchange standards ...

Document interchange standards Interchange standards permit electronic documents to be exchanged mailed, etc.  Documents are produced using dissimilar systems and on differe

What are the task involved in design process of sdlc, What are the task inv...

What are the task involved in design process of SDLC General tasks involved in the design process are the following: i)  Design various blocks for overall system processes.

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