
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Can u answer the question for 1,2,3 for part A
![For the purpose of this lab, we are interested in using the ARC simulator to use:
The console output port to display characters
The keyboard input port to read characters
1) Please provide comments for all instructions.
2) What is the memory mapped address for the console output and keyboard input?
3) Please identify the specific line of code that prints to console and reads the
keystroke.
PART A - Output: Printing character to the display
The memory addresses associated wi
the
console output I/O device are:
Oxffff0000 is the console (output) data port
Oxffff0004 is the console (output) status port where bit 7 is the ready flag (0: not
ready, 1: ready)
Printing a character is achieved by:
Checking the ready flag to see if device is ready for printing, i.e., check if the bit 7
of the output status port is set to 1
Storing the character to the output data port
! Prints "Hello, world!\n" in the message area.
.begin
1
BASE
COUT
.equ Ox3fffcO
.equ Ox0
.equ Ox4
!Starting point of the memory mapped region
!Oxffff0000 Console Data Port
!Oxffff0004 Console Status Port
COSTAT
2048
.org
add
%r0, %r0, %r2
%r0, %r0, %r4
sethi BASE, %r4
add
Loop:
Id
[%r2 + String], %r3 !Load next char into r3
addcc %r3,%r0,%r3
End
be
! stop if null
Id
andcc %r1, Ox80, %r1
be
Wait:
[%r4+COSTAT]), %r1
Wait
%r3, [%r4+COUT] !Print to console
%r2, 4, %r2
Loop
st
!increment String offset (r2)
add
ba
End:
halt
!A non-standard instruction to stop the simulator
3000
.org
! The "Hellow, world!" string
String:
Ох48, Ох65, 0хбс, Ох6с, 0х6f
Оx2с, Ох20, Ох77, Ох6f, Ох72
Ох6с, Ох64, Ох21, 0х0а, 0
.end](https://content.bartleby.com/qna-images/question/31b13744-2a7c-4c52-8a63-0a640293092a/b886dd41-afa3-4a16-b372-66d9110c7567/sdvo7wj_thumbnail.jpeg)
Transcribed Image Text:For the purpose of this lab, we are interested in using the ARC simulator to use:
The console output port to display characters
The keyboard input port to read characters
1) Please provide comments for all instructions.
2) What is the memory mapped address for the console output and keyboard input?
3) Please identify the specific line of code that prints to console and reads the
keystroke.
PART A - Output: Printing character to the display
The memory addresses associated wi
the
console output I/O device are:
Oxffff0000 is the console (output) data port
Oxffff0004 is the console (output) status port where bit 7 is the ready flag (0: not
ready, 1: ready)
Printing a character is achieved by:
Checking the ready flag to see if device is ready for printing, i.e., check if the bit 7
of the output status port is set to 1
Storing the character to the output data port
! Prints "Hello, world!\n" in the message area.
.begin
1
BASE
COUT
.equ Ox3fffcO
.equ Ox0
.equ Ox4
!Starting point of the memory mapped region
!Oxffff0000 Console Data Port
!Oxffff0004 Console Status Port
COSTAT
2048
.org
add
%r0, %r0, %r2
%r0, %r0, %r4
sethi BASE, %r4
add
Loop:
Id
[%r2 + String], %r3 !Load next char into r3
addcc %r3,%r0,%r3
End
be
! stop if null
Id
andcc %r1, Ox80, %r1
be
Wait:
[%r4+COSTAT]), %r1
Wait
%r3, [%r4+COUT] !Print to console
%r2, 4, %r2
Loop
st
!increment String offset (r2)
add
ba
End:
halt
!A non-standard instruction to stop the simulator
3000
.org
! The "Hellow, world!" string
String:
Ох48, Ох65, 0хбс, Ох6с, 0х6f
Оx2с, Ох20, Ох77, Ох6f, Ох72
Ох6с, Ох64, Ох21, 0х0а, 0
.end
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by stepSolved in 4 steps with 2 images

Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Please write the code for the given question in Java language.arrow_forwardComputer sciencearrow_forwardWrite code for. Computes the smallest x that satisfies the chinese remainder theorem for a system of equations. The system of equations has the form: x % nums[0] = rems[0] x % nums[1] = rems[1] ... x % nums[k - 1] = rems[k - 1] Where k is the number of elements in nums and rems, k > 0. All numbers in nums needs to be pariwise coprime otherwise an exception is raised returns x: the smallest value for x that satisfies the system of equations.arrow_forward
- bool isprime(long n) /* fixed from to https://www.geeksforgeeks.org/euclid-euler-theorem/?ref=lbp */{ // check whether a number is prime or not int i; for (i = 2; i * i <= n; i++) if (n % i == 0) return false; return true;}arrow_forwardHello I am really really struggling with this problem because i don't know how to do this problem or how to answer this question can you please help me answering this problem. I added the text below. question that I need help with: 1.48 Let Σ = {0,1} and let D = {w|w contains an equal number of occurrences of the substrings 01 and 10}. Thus 101 ∈ D because 101 contains a single 01 and a single 10, but 1010 6∈ D because 1010 contains two 10s and one 01. Show that D is a regular language.arrow_forwardBum 0; for (int i = 1; iarrow_forward
- Note that for this question, you can in addition use ``land” for the symbol ``lor" for the symbol V ` `Inot" for the symbol ¬ Given the following three sentences: A) Every mathematician is married to an engineer. B) A bachelor is not married to anyone. C) If George is a mathematician, then he is not a bachelor. a) Convert A,B,C into three FOL sentences, where Mn(x): x is a mathematician. Er(x): x is an engineer. Md(x,y): x is married to y. Br(x): x is a bachelor. george: George is a constant. b) Show that A does-not-entail C. (Hint: Consider defining an interpretation / such that / models A, but does-not-model C.) c) Show that {A,B} entails C. (Hint: For a given interpretation I, consider two difference cases, the case where Mn(george) is true, and the case Mn(george) is false. For both cases, argue that it is always that I models C). d) Convert A,B, Inot C into a set of clausal forms, number your clauses. (Note that C is negated here!) e) Derive the empty clause from the set of…arrow_forwardWrite the function root_bisec that solves for f(x)=v with the metod of bisection Use this declaration: function [x, fx, i] = root_bisec(f,a,b,v) % Solve f(x)=v in [a,b] also returns iterations % To prove this program use this example: >> [x, fx, i]=root_bisec(@(x) sqrt(x)-sin(x), 0, 3, 1) x = 2.5155 fx = 1 i = 27arrow_forward]: Write a piece of code that calculates the uncertainty SP from the error propagation rule for sums, SP = 2√√√(SL)² + (SW)² A few hints: Again, you're translating the above equation into code. • Your result should be stored in a variable uncertainty_P_errorprop • For the square root function, use np. sqrt() • For squares, use ** #YOUR CODE HERE raise Not ImplementedError() ]: ▼ # Print the uncertainty print ("uncertainty of circumference P from error propagation: 11 , uncertainty_P_errorprop)arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education

Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education

Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON

Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON

C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON

Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning

Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education