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

Handling customer complaints, Handling customer complaints There are al...

Handling customer complaints There are always some customers who complain after completing the sales. Like customer objections, don't take complaints negatively. Other than

Write short note on the various estimation techniques, Write short note on ...

Write short note on the various estimation techniques. Algorithmic cost modelling - the cost estimation is depend on the size of the software. Expert judgement - The experts fr

Explain process and product quality, Explain Process and product quality ...

Explain Process and product quality The quality of a developed product is influenced by the quality of the production process. This is important in software development as some

What are the different rapid prototyping techniques, What are the different...

What are the different Rapid prototyping techniques? i. Dynamic high level language development. ii. Database programming. iii. Component and application assembly.

What does modality in data modeling indicates, What does modality in data m...

What does modality in data modeling indicates? Modality shows whether or not a particular data object must participate in the relationship.

State the term- code coverage, State the term- Code Coverage This is a...

State the term- Code Coverage This is an analysis method that determines which parts of software have already been covered by test case suite and which are remaining.

User and system documentation with examples, User documentation consist des...

User documentation consist descriptions of the functions of a system without reference to how these functions are implemented. Instances are installation guide and reference guide.

What are the umbrella activities of a software process, What are the umbrel...

What are the umbrella activities of a software process? Software project tracking and control. Risk management. Formal Technical Reviews. Software Quality Assurance.

What is requirements definition description, What is Requirements Definitio...

What is Requirements Definition Description Output of requirements of engineering process is Requirements Definition Description (RDD). Requirements engineering can be defined

What is stress testing, What is Stress testing - It checks the robustn...

What is Stress testing - It checks the robustness of application. - It verifies that application consistently provides satisfactory performance under unfavourable and extre

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