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

Define evolutionary prototyping, Q. Define Evolutionary prototyping? Ev...

Q. Define Evolutionary prototyping? Evolutionary Prototyping is also known as breadboard prototyping is quite different from Throwaway Prototyping. The major goal when using Ev

Open source software, what are the advantages of open source software?

what are the advantages of open source software?

Explain the data flow diagram, Define Data Flow Diagram. A Data flow di...

Define Data Flow Diagram. A Data flow diagram is a graphical description that depicts information flow & the transforms that are applied as data move from input to output. T

Ftr, EXPLAIN ABOUT DEFECT AMPLIFICATION AND REMOVAL IN SOFTWARE ENGINEERING...

EXPLAIN ABOUT DEFECT AMPLIFICATION AND REMOVAL IN SOFTWARE ENGINEERING

Write down the src for add a node, Write down the SRC for "Add a node" ...

Write down the SRC for "Add a node" Function Add node Description Adds a node to an existing design. Inputs Node type, Design Identifier, Node position Source

Explain test data generators - testing tools, Q. Explain Test data generato...

Q. Explain Test data generators - testing tools? Test data generators: this is a hard one and at lease for the present is one for which no general solution exists. One of the

Define partitioning, Partitioning:- Problems are often too large and diffi...

Partitioning:- Problems are often too large and difficult to be understood as a whole. For this reason, we tend to partition such difficulties into parts that can be easily unders

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

Recreating Sections of Google+ in C, Create a compound data type called Pos...

Create a compound data type called Post to store messages posted on Google+. Post should include: Name / Data Type / Description date / char [9] / date fields for

What are the phases of problem solving loop, What are the phases of Problem...

What are the phases of Problem solving Loop? Problem definition shows the problem to be solved. Technical developmentSolve the Problem by some Technology. Solution Integr

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