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 cardinality and modality, Define Cardinality & Modality. Cardina...

Define Cardinality & Modality. Cardinality: Requirement of the number of occurrences of one that can be linked to number of occurrences of another. Modality: The Modality of

Iterative Enhancement Model, what is the advantage of Iterative Enhancement...

what is the advantage of Iterative Enhancement Model in developing a system?

What is verification, What is verification?     Verification is the pro...

What is verification?     Verification is the process of determining whether the output of single phase of software development conforms to that of its last phase, whereas vali

Briefly explain the requirement capture methods, Problem: (a) Briefly e...

Problem: (a) Briefly explain the requirement capture methods. (c) Using examples, write short notes on the following: i) Aggregation ii) Composition iii) Generalisation

What is software re-engineering, What is software re-engineering? No fu...

What is software re-engineering? No functionality is added to the system. Rather than, the system is modified to compose it easier to understand and change. System re-engineeri

What is code complete, Code Complete - Phase of development where func...

Code Complete - Phase of development where functionality is executed in entirety with only bug fixes remaining. - All functions from the functional specifications are alrea

Explain testability, Explain Testability? Ans) (1) The degree to which a...

Explain Testability? Ans) (1) The degree to which a scheme or component facilitates the establishment of test criteria and the performance of tests to verify whether those crite

What problems arise if two modules have high coupling, Q. What problems ari...

Q. What problems arise if two modules have high coupling? Ans: Coupling signifies the interconnection of different modules with each other or we can say it tells about the in

What is integration testing, What is Integration testing: - This test i...

What is Integration testing: - This test is performed to determine the interfaces among system components, interactions between the application and the hardware, file system, a

What is affinity diagram, A group process that takes large quantity of lang...

A group process that takes large quantity of language data, like as a list developed by brainstorming, and separates it into categories.

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