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

Transaction mapping, how transaction mapping is done.??clear me with a brie...

how transaction mapping is done.??clear me with a brief example

Explain about rapid prototyping techniques, Explain about rapid prototyping...

Explain about rapid prototyping techniques.  Used to animate the system specification. It is expressed in a formal, mathematical language to provide a system prototype

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

The software life cycle model that incorporates risk factor, Explain the so...

Explain the software life cycle model that incorporates risk factor.  The problem with traditional software process models is that they do not deal adequately with the uncertai

Determine in detail about waterfall model, Determine in detail about Waterf...

Determine in detail about Waterfall model Waterfall model provides a sequential and systematic approach to software development and is better than build and fix approach. Howev

What is cocomo, Software project Management & Quality Assurance 1. Brie...

Software project Management & Quality Assurance 1. Briefly explain various activities involved in project management. 2. What is COCOMO? Write necessary steps for cost estim

Determine the technique - parallel, Determine the technique - Parallel ...

Determine the technique - Parallel With this approach, old and new systems are run together for a time  -  If new system goes down for any reason, you still have old system

How to build the structure chart, Q. How to build the Structure Chart? ...

Q. How to build the Structure Chart? Building the Structure Chart Processes in the DFD are liable to represent one module on the structure chart Efferent 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