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

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

Explain the data flow diagram, Define Data Flow Diagram. A Data flow di...

Define Data Flow Diagram. A Data flow diagram is a graphical description that depicts information flow & the transforms that are applied as data move from input to output. T

State some guidelines for testing, State some guidelines for testing Th...

State some guidelines for testing The below are some guidelines for testing: i)  Test modules thoroughly, cover all the access paths and produce enough data to cover all the

Role of measurement in software engineering, Question: (a) (i) Describ...

Question: (a) (i) Describe briefly the role of measurement in software engineering. (ii) List three types of entities, their attributes and related measures in software eng

Explain exhaustive testing, Implementing the program with all possible comb...

Implementing the program with all possible combinations of values for program variables. Feasible only for small, simple programs.

SAD Design Phase, describe normalization & its forms? plz i m very thankful...

describe normalization & its forms? plz i m very thankful.......

Data dictionary , data dictionary diagram for library management system

data dictionary diagram for library management system

Star topology, where star topology used in daily life

where star topology used in daily life

Illustrate about the behavioural model, Illustrate about the Behavioural mo...

Illustrate about the Behavioural model Behavioural model defines: Data of proposed system. (i)  The internal functioning of proposed system,  (ii)  Inter-relationship

calculus, solve inequalities and graph the solutions: [z/25-1

solve inequalities and graph the solutions: [z/25-1]

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