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

Name the functionality which wasn''t listed in requirements, What do you do...

What do you do if you have provided functionality which wasn't listed in requirements? - If functionality isn't necessary to purpose of the application, it must be removed.

Software testing, Hello, I have an assignment and have to derive a regular ...

Hello, I have an assignment and have to derive a regular expression based on a CFG provided but i dont know how. please help.

Software engineer, Differance b/w Liner sequenrial modal with incremental m...

Differance b/w Liner sequenrial modal with incremental modal

Discrete mathematics, Within the discussion board area, respond to the foll...

Within the discussion board area, respond to the following questions with your thoughts, ideas, and comments. This will be the foundation for future discussions by your fellow clas

Explain the term- system maintenance, Explain the term- System Maintenance ...

Explain the term- System Maintenance update hardware as new items come on market or company changes in any way which requires new devices to be updated/added Update sof

State the cocomo model, What is COCOMO model? COCOMO stands for COnstru...

What is COCOMO model? COCOMO stands for COnstructive COst MOdel. It is used for cost Effort=a * KDLOCb Where a and b are two parameters of the model whose specific values

What is the purpose of timeline chart, What is the purpose of timeline char...

What is the purpose of timeline chart? The purpose of the timeline chart is to highlight the scope of the individual task. Hence set of tasks are given as input to the timeline

Explain about the software testing strategies, Explain about the software t...

Explain about the software testing strategies. A method approach to software testing. Verification and Validation. Verification refers to the set of activities that ma

Explain about the spiral model, Explain about the Spiral Model This mod...

Explain about the Spiral Model This model can be considered as the model that combines the strengths of various other models. Conventional software development processes don't

Define process specification, Define Process Specification. Process Sp...

Define Process Specification. Process Specification is used to explain all flow model processes that appear at the final level of refinement. Check & Convert pressure Ch

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