Homework Help is Here – Start Your Trial Now!
Engineering
Computer Engineering
Write a program that allows a user to input the directory name and perform the following file operations. • Create a subdirectory with the specified name. • Delete a subdirectory with the specified name • Go to the specified director . Retrieve the current working directory.

Write a program that allows a user to input the directory name and perform the following file operations. • Create a subdirectory with the specified name. • Delete a subdirectory with the specified name • Go to the specified director . Retrieve the current working directory.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
See similar textbooks
icon
Related questions
Question
INT 21H Service 47H: Getting the current directory Function 47H determines the current directory for any drive. Define a space large enough to contain the longest possible pathname (up to 64 bytes), and loads its name in SI. Identify the drive in DL (0-default, 1-A, 2-B, and so forth). SHAKEBEdik d mov ah, 47h mov d1,0 lea int 21h mov bl.actlen CHEESEDÍK III. Procedures 1. Run EDIT.COM from the DOS prompt. Then type the following lines of code model tiny .data pathname d 'C:\UNTITLED',0 code org 100h begin mov ah, 39h lea dx.pathname int 21h ret end begin Save the program as EXER26.ASM 2. Assemble and run the above program. What happens? Write your observations. 3. Modify EXER26.ASM and replace service 39H with 3BH. Save the program as EXER27.ASM. 4. Repeat Step 2 for EXER27.ASM. What does the program do? Write your observations. IV. Observation V. Conclusion VI. Programming Problem Write a program that allows a user to input the directory name and perform the following file operations. • • • . Create a subdirectory with the specified name. Delete a subdirectory with the specified name Go to the specified director Retrieve the current working directory. Hint: Use a parameter list for file input. To convert the input string to an ASCII string, use the following lines of code: namenar label byte maxien d 64 FOR LONG NAMES actlen db? dirname, do 20 dup (¹) mov ah, Oah lea daeRAK int 21h mov blactlen mov filename (bx), 0 Save as PROB18.ASM, PROB19 ASM, and PROB20, ASM, respectively
Transcribed Image Text:INT 21H Service 47H: Getting the current directory Function 47H determines the current directory for any drive. Define a space large enough to contain the longest possible pathname (up to 64 bytes), and loads its name in SI. Identify the drive in DL (0-default, 1-A, 2-B, and so forth). SHAKEBEdik d mov ah, 47h mov d1,0 lea int 21h mov bl.actlen CHEESEDÍK III. Procedures 1. Run EDIT.COM from the DOS prompt. Then type the following lines of code model tiny .data pathname d 'C:\UNTITLED',0 code org 100h begin mov ah, 39h lea dx.pathname int 21h ret end begin Save the program as EXER26.ASM 2. Assemble and run the above program. What happens? Write your observations. 3. Modify EXER26.ASM and replace service 39H with 3BH. Save the program as EXER27.ASM. 4. Repeat Step 2 for EXER27.ASM. What does the program do? Write your observations. IV. Observation V. Conclusion VI. Programming Problem Write a program that allows a user to input the directory name and perform the following file operations. • • • . Create a subdirectory with the specified name. Delete a subdirectory with the specified name Go to the specified director Retrieve the current working directory. Hint: Use a parameter list for file input. To convert the input string to an ASCII string, use the following lines of code: namenar label byte maxien d 64 FOR LONG NAMES actlen db? dirname, do 20 dup (¹) mov ah, Oah lea daeRAK int 21h mov blactlen mov filename (bx), 0 Save as PROB18.ASM, PROB19 ASM, and PROB20, ASM, respectively
Experiment 17 Directories I. Objective After performing this activity, you should be able to 1. Perform operations on directories in assembly language. II. Introduction This experiment covers a number of extended DOS services for disk operations introduced by DOS 2.0 and 3.0. Many of these services are much simpler than the original DOS services are generally recommended. These operations involve the use of an ASCIIZ string to initially identify a drive, path and filename; a file handle; and special error return codes. Int21H Service 39H: Creating a directory Function 39H creates a subdirectory, just like the DOS command MD For example, diname, dh 'C:\TASM',0 mov ah, 39h lea dx dirname int 21h A successful operation creates the subdirectory TASM in drive C. An error sets the carry flag and returns code 03 (path not found or invalid path) or 05 (access denied or directory already exists) in register AX. INTIH Service 3AH: Removing a directory Function 3AH deletes a subdirectory. just like the DOS command RD. NOTE: You cannot delete the current directory of a directory that contains files dinamos dh 'C:\TASM',0 mov ah, 3Ah lea dx.diename int 21h An error sets the carry flag and returns code 03, 05, or 15 (invalid drive or directory does not exists). INT21H Service 3BH: Changing the current directory Function 3BH changes the current directory to one that you specify, just like the DOS command CD. dirname, dh 'C:\WINDOWS', 0 mov ah, 47h lea dx, diname. int 21h An error sets the carry flag and returns code 03 in AX.
Transcribed Image Text:Experiment 17 Directories I. Objective After performing this activity, you should be able to 1. Perform operations on directories in assembly language. II. Introduction This experiment covers a number of extended DOS services for disk operations introduced by DOS 2.0 and 3.0. Many of these services are much simpler than the original DOS services are generally recommended. These operations involve the use of an ASCIIZ string to initially identify a drive, path and filename; a file handle; and special error return codes. Int21H Service 39H: Creating a directory Function 39H creates a subdirectory, just like the DOS command MD For example, diname, dh 'C:\TASM',0 mov ah, 39h lea dx dirname int 21h A successful operation creates the subdirectory TASM in drive C. An error sets the carry flag and returns code 03 (path not found or invalid path) or 05 (access denied or directory already exists) in register AX. INTIH Service 3AH: Removing a directory Function 3AH deletes a subdirectory. just like the DOS command RD. NOTE: You cannot delete the current directory of a directory that contains files dinamos dh 'C:\TASM',0 mov ah, 3Ah lea dx.diename int 21h An error sets the carry flag and returns code 03, 05, or 15 (invalid drive or directory does not exists). INT21H Service 3BH: Changing the current directory Function 3BH changes the current directory to one that you specify, just like the DOS command CD. dirname, dh 'C:\WINDOWS', 0 mov ah, 47h lea dx, diname. int 21h An error sets the carry flag and returns code 03 in AX.
Expert Solution
steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Computer Networking: A Top-Down Approach (7th Edi…
Computer Networking: A Top-Down Approach (7th Edi…
Computer Engineering
ISBN:
9780133594140
Author:
James Kurose, Keith Ross
Publisher:
PEARSON
Computer Organization and Design MIPS Edition, Fi…
Computer Organization and Design MIPS Edition, Fi…
Computer Engineering
ISBN:
9780124077263
Author:
David A. Patterson, John L. Hennessy
Publisher:
Elsevier Science
Network+ Guide to Networks (MindTap Course List)
Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:
9781337569330
Author:
Jill West, Tamara Dean, Jean Andrews
Publisher:
Cengage Learning
Concepts of Database Management
Concepts of Database Management
Computer Engineering
ISBN:
9781337093422
Author:
Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:
Cengage Learning
Prelude to Programming
Prelude to Programming
Computer Engineering
ISBN:
9780133750423
Author:
VENIT, Stewart
Publisher:
Pearson Education
Sc Business Data Communications and Networking, T…
Sc Business Data Communications and Networking, T…
Computer Engineering
ISBN:
9781119368830
Author:
FITZGERALD
Publisher:
WILEY
SEE MORE TEXTBOOKS