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

What is failure, The inability of a system or system component to perform a...

The inability of a system or system component to perform a needed function within specified limits.

Artificial intelligence, Explain fully the application of artificial intell...

Explain fully the application of artificial intelligence

What is test schedule, The test schedule is a schedule that signifies all t...

The test schedule is a schedule that signifies all tasks needed for a successful testing effort, a schedule of all test activities and resource needs.

Script file, how to make script file volume of pyramid

how to make script file volume of pyramid

What is parallel/audit testing, Parallel/audit testing is testing where the...

Parallel/audit testing is testing where the user reconciles the output of the latest system to the output of the present system to determine the new system performs the operations

Explain scalability of information systems, Question: (a) The relations...

Question: (a) The relationship between organisations and information technology is a complex one, and is made up of a number of mediating factors which must be considered prior

What is inheritance, Q. What is Inheritance? Inheritance:- Inheritance...

Q. What is Inheritance? Inheritance:- Inheritance is defined as the property of objects by which instances of a class can have access to data and programs contained in a previ

Evaluate mccabes cyclomatic complexity, Q. For the flow graph showed in fig...

Q. For the flow graph showed in figure compute McCabe's Cyclomatic Complexity. Ans: In this flow graph Number of regions are 5 hence the Cyclomatic complexity is = 5

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