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 specific languages can be used in srs, What specific languages can be ...

What specific languages can be used in SRS? Requirement specification necessitates the use of some order language. The language should support the desired qualities of the SRS-

Advantage of microcomputer software packages, Advantage of microcomputer so...

Advantage of microcomputer software packages: i)  compilation and maintenance of reference and fact files;  ii)  compilation of current and retrospective bibliographies

What is software configuration management, What is Software configuration m...

What is Software configuration management? ans)Software Configuration Management (SCM) is the control and the recording of alter that are made to the software and documentation

Describe the various elements of data design, Describe the various elements...

Describe the various elements of data design? i. Data object - The data objects are identified and relationships among various data objects are represented using ERD or data di

Handling customer complaints, Handling customer complaints There are al...

Handling customer complaints There are always some customers who complain after completing the sales. Like customer objections, don't take complaints negatively. Other than

Explain productivity and difficulty, Productivity and difficulty Produ...

Productivity and difficulty Productivity refers to metrics and measures of output from production processes, per unit of input. Productivity P may be conceived of as a metric

Write down any four application of a stack, Write down any four application...

Write down any four application of a stack. (i)  Conversion of infix to postfix form (ii)  Reversing of a line. (iii) Removal of recursion (iv) Evaluating post fix expression

Define coupling and discuss various types of coupling, Define coupling and ...

Define coupling and Discuss various types of coupling? Define coupling. Discuss various types of coupling. Ans: A Coupling is the measure of the degree of interdepende

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