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

Explain the quality assurance manager and project manager, How do you diffe...

How do you differentiate the roles of Quality Assurance Manager and Project Manager? Quality Assurance Manager (QA Manager) produces the process to be followed at every phase

Define software testability, Q. Define Software testability? Software ...

Q. Define Software testability? Software testability is the degree to which a software artifact (i.e. a software system, software module, requirements- or design document) su

List the principles of a software design, List the principles of a software...

List the principles of a software design. i. The design process should not undergo from "tunnel vision". ii. The design should be traceable to the analysis model. iii. Th

Explain respiratory quotient, Explain Respiratory quotient? Ans) Respira...

Explain Respiratory quotient? Ans) Respiratory quotient is the ratio among the carbon-dioxide used in photosynthesis to the quantity of oxygen liberated in respiration.

State lehmans first law, State Lehman's First law. A program that is u...

State Lehman's First law. A program that is used in true world environment essentially must change or become progressively less useful in that environment.

Daa, 3. Explain asymptotic notations and their significance

3. Explain asymptotic notations and their significance

Application design - micro cds-isis software, Application Design: Micr...

Application Design: Micro CDS/ISIS is a text oriented software package. It is a good , ho ice if one wishes to store textual data, retrieve the data by certain criteria, and d

Explain the throw away prototype, Explain the Throw away prototype I...

Explain the Throw away prototype In this technique, prototype is discarded once its purpose is fulfilled and final system is built from scratch. Prototype is built quickly t

Define software testing, Define software testing? Software testing is a...

Define software testing? Software testing is a critical element of software quality assurance and shows the ultimate review of specification, design, and coding.

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