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 exhaustive testing, Implementing the program with all possible comb...

Implementing the program with all possible combinations of values for program variables. Feasible only for small, simple programs.

Define capability maturity model, CMM is a strategy for enhancing the softw...

CMM is a strategy for enhancing the software process irrespective of the actual life cycle model utilized. SEI (Software Engineering Institute) of Carnegie-Mellon University develo

What is function points, Q. What is Function points? Function points :...

Q. What is Function points? Function points : Function point calculates the functionality from the user opinion that is on the basis of what the user request and receives in r

Explain structural testing, Testing that takes into account the internal me...

Testing that takes into account the internal mechanism [structure] of a system or component. Types contain branch testing, path testing, statement testing. Testing to insure eve

Illustrate detailed cocomo model, Q. Illustrate Detailed COCOMO model? ...

Q. Illustrate Detailed COCOMO model? Detailed COCOMO it incorporates all characteristics of the intermediate version with an assessment of the cost driver's impact on every ste

What is the benefit of modular design, What is the benefit of modular desig...

What is the benefit of modular design? Changes made during testing and maintenance becomes manageable and they do not influence other modules.

What is walkthrough, What is Walkthrough? Ans) Usually, a step-by-step s...

What is Walkthrough? Ans) Usually, a step-by-step simulation of the implementation of a procedure, as when walking by code, line by line, with an imagined set of inputs. The wor

Solution manual, i need solution manual for software engineering |10 editio...

i need solution manual for software engineering |10 edition by ian Sommerville

Explain requirement issues in software risks, Q. Draw the flow chart of Ris...

Q. Draw the flow chart of Risk Management-Activity and explain various Software risks. Ans RISK is a problem that could cause a few loss or threatens the success of the proje

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