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

Hart Protocol DD files, I am working on DD development project and I am us...

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

Database management systems, Database Management Systems: These are es...

Database Management Systems: These are essentially programming frameworks, and can offer good storage and retrieval systems. They are mainly intended for programmers to intera

Explain metric, Explain Metric? Ans) The measure of the extent or degree...

Explain Metric? Ans) The measure of the extent or degree to which a product possesses and exhibits a particular quality, property, or attribute.

Explain product metrics, What is Product metrics? A quality metric shou...

What is Product metrics? A quality metric should be a predictor of product quality. Classes of product metric Dynamic metrics which are collected by measurements made

Structured analysis - software engineering, Structured Analysis Model ...

Structured Analysis Model Structured  analysis is  the  most  broadly  used  of  needs  modeling  techniques,  relies  on  flow modeling and data modeling to build the basis f

What are the reasons behind to perform white box testing, What are the reas...

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

Category Partition Testing and Data Flow Assignment, The following program ...

The following program will display an integral solution to the quadratic equation ax2+bx+c for integral values of a,b, and c, where a,c fall between 0 and 10, while b falls between

Srs, Why is SRS document known as black box specification of a system

Why is SRS document known as black box specification of a system

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