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

Develop a clinic system - unified modeling language, You are to develop a C...

You are to develop a Clinic System . 1. Identify and briefly explain the objects, classes, methods and attributes for the Clinic System. 2. Draw a use case diagram to represe

What are the various elements of data design, What are the various elements...

What are the various elements of data design? i. Data object - The data objects are identified and relationship between various data objects can be shown using ERD or data di

Simulation and optimization software, A one-car taxi company receives an av...

A one-car taxi company receives an average of 18 calls per day. The receptionist takes down details of the requested journey and relays them to the driver by radio. Each passenger'

HART protocol DD development, I am working on DD development project and I...

I am working on DD development project and I am using 475 field communicator for testing DD. While development of DD, I tested DD with SDC 625 PC application using HART modem. I h

Explain in detail about software maintenance, Explain in detail about softw...

Explain in detail about software Maintenance. Software maintenance is an action in which program is modified after it has been put into use. Maintenance is termed as the

State the level 5 of key process areas, Level 5 KPAs 1)Defect Prevent...

Level 5 KPAs 1)Defect Prevention (DP): It discovers causes of defects and devises techniques which prevent them from recurring. 2)Technology Change Management (TCM): It

What are the causes behind to perform white box testing, What are the cause...

What are the causes behind to perform white box testing? There are three main reasons behind performing the white box testing. 1. Programmers may have some incorrect assumpt

Explain test harness systems and test archiving systems, Q. Explain Test ha...

Q. Explain Test harness systems and Test archiving systems? Test harness systems: This is one that is bound around the test object and that permits the easy modification a

SRS, i want to make a case study of any topic of SRS but i am little confus...

i want to make a case study of any topic of SRS but i am little confuse about SRS plz give me Idea how to work in SRS and how to select a model

What is test log, What is Test log? A chronological record of all releva...

What is Test log? A chronological record of all relevant details about the implementation of a test.

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