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 incremental model, Explain the Incremental Model Iterative ...

Explain the Incremental Model Iterative and Incremental Models follow more or less the similar approach. Incremental Model is an intuitive approach to the waterfall model. Mult

What is a state transition diagram, What is a state transition diagram? ...

What is a state transition diagram? State transition diagram is basically a collection of states and events. The events cause the system to change its state. It also show what

Equivalence class testing, Equivalence class testing Equivalence class ...

Equivalence class testing Equivalence class testing is based on partitioning the input domain of a program into a number of equivalence classes so that the test of a representa

What is a software project test plan, What is a software project test plan?...

What is a software project test plan? A test plan is the master document that having all details pertaining to testing of the application. Its contents include: - Testing sc

Illustrate parameterization in qtp, Illustrate parameterization in QTP. ...

Illustrate parameterization in QTP. - Parameterization - Passing values from external source into script. - The number of values passed can be single or multiple. - It he

What is stochastic testing, Stochastic testing is the similar as "monkey te...

Stochastic testing is the similar as "monkey testing", but stochastic testing is a lot more technical sounding name for the similar testing process.

What is a process modeling and management tool, What is a process modeling ...

What is a process modeling and management tool? Process modeling and management tools are used to show the key elements of a process so it can be better understood. Such tools

What are the three activities of risk assessment, What are the three activi...

What are the three activities of risk assessment? Ans: The three activities are analyzing, identifying and giving priorities. Risks are able to be identified by a check list

Explain evolutionary development model, Evolutionary Development model. ...

Evolutionary Development model.  Evolutionary Development Model : Evolutionary development model resembles iterative enhancement model. The similar phases as defined for the w

What is boundary data- Test data, What is boundary data- Test data Ex...

What is boundary data- Test data Extreme/boundary data -  This is data at the limits of validity/acceptability (for instance, if a date is being input, two values at the

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