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

Define the process of requirements gathering tools, Define the process of R...

Define the process of Requirements Gathering Tools Requirements gathering is an art. Person who gathers requirements must have knowledge of what and when to gather information

List the process maturity levels in seis cmm, List the process maturity lev...

List the process maturity levels in SEIs CMM. Level 1: Initial - Few processes are explained and individual efforts are taken. Level 2: Repeatable - To track cost schedul

Illustrate the concept of hybrid design, Q. Illustrate the concept of Hybri...

Q. Illustrate the concept of Hybrid design? Hybrid design: Pure top-down or else pure bottom up approaches are often not practical so hybrid approach which combines the above

SRS, i want to make a case study of any topic of SRS but i am little confus...

i want to make a case study of any topic of SRS but i am little confuse about SRS plz give me Idea how to work in SRS and how to select a model

The level at which the software uses scarce resources, The level at which t...

The level at which the software uses scarce resources Efficiency level.

Pl sql, The company wants to offer an incentive of free shipping to those c...

The company wants to offer an incentive of free shipping to those customers who have not returned for two months. Create a procedure named PROMO_SHIP_SP that determines who these c

Software myth, how does software myth affects software process

how does software myth affects software process

Explain various software risks, Explain various Software risks.  Typic...

Explain various Software risks.  Typical Software Risks:- 1. Dependencies: -Many risks arise because of dependencies of project on outside  agencies or factors. It is not

Determine the common problems with software automation, Determine the commo...

Determine the common problems with software automation ? The biggest concern is the cost incurred for test automation. Also, often s/w test automation needs skilled personnel an

Artificial intellegence, can yo do a project on Artificial Intelligence.The...

can yo do a project on Artificial Intelligence.The topic is L-system of flowers

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