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

SOFTWARE, EXPLAIN COMPONENTS OF DATABASE MANAGEMENT

EXPLAIN COMPONENTS OF DATABASE MANAGEMENT

Software licesnse, what are the main characteristics of software lease

what are the main characteristics of software lease

What is dma data transfer, DMA data transfer The position of the DMA co...

DMA data transfer The position of the DMA controller between the other components in a computer system. The CPU communicates with the DMA by the  address and data buses as with

Usual stages of the simplified design process, Q. Usual stages of the simpl...

Q. Usual stages of the simplified design process? Pre-production design Design brief it is an early often the beginning statement of design goals Analysis i

What is review, What is Review? Ans) A method or meeting during which a ...

What is Review? Ans) A method or meeting during which a work product or set of work products, is shown to project personnel, managers, users, customers, or other interested part

Explain top down design, Top down design: A top down design approach begin...

Top down design: A top down design approach begins by identifying the main modules of the system, decomposing them into their lower level modules and iterating unless the desired

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

What is structured programming and why is it important, What is structured ...

What is structured programming and why is it important? Structured programming is a programming which was coined in the late 1960's to mean programming without using go to stat

Describe about the incremental model, Explain about the incremental model. ...

Explain about the incremental model. Have similar phases as the waterfall model. Phases are Analysis. Design. Code. Test. Incremental model delivers

What is function count, Function count:- It measures the functionality fro...

Function count:- It measures the functionality from the user point of view, that is, on the basis of what the user requests and receives in return. Therefore it deals with the fun

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