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 software metric, What is software metric? A Software metric is...

What is software metric? A Software metric is a easy quantitative measure derivable from any attribute of the software life cycle (E.g.) LOC (Line Of Code) Function poin

What is top-down testing, An integration testing methods that tests the hig...

An integration testing methods that tests the high-level components first using stubs for lower-level known as components that have not yet been integrated and that stimulate the n

Different phases of the rational unified process, Problem: (a) Briefly...

Problem: (a) Briefly explain the different phases and workflows of the Rational Unified Process. (b) What are the two benefits that might be gained when using such a life-c

What is checksheet, What is Checksheet? Ans) A checksheet is the form us...

What is Checksheet? Ans) A checksheet is the form used to record data as it is gathered.

Cs304, Following is the description of all data member and member functions...

Following is the description of all data member and member functions of respective classes: ? Data members for PropertyCategories: o SocietyName: This data member will be used

Produce a use case diagram, ZeroJet, a new low cost airline, wants a brand ...

ZeroJet, a new low cost airline, wants a brand new web-based system to allow people to book seats for flights on-line.  They want an automated check in system which has no staff.

Explain the concept of bottom-up design, Q. Explain the concept of bottom-u...

Q. Explain the concept of bottom-up design? Bottom up design: This approach make possible a style of design where we decide how to combine these modules to provide larger ones

Define the minimum cardinality of a relationship, Define the Minimum cardin...

Define the Minimum cardinality of a relationship Minimum cardinality of a relationship is the minimum number of instances of second entity (student, in this case) with every in

Define the process of software change, What is meant by software change? ...

What is meant by software change? Once software is ready to  use, new requirement appear and existing requirements change as the business running that software changes parts of

Mention some of the drawbacks of rad model, Mention some of the drawbacks o...

Mention some of the drawbacks of RAD model. Not suitable for largescale projects. Commitment of developers & customers are required. Not appropriate when technical ris

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