Instructions:
Please read the
following instructions carefully before submitting assignment. It should be clear that your assignment will not get any
credit if:
§
The assignment is submitted after due date.
§
The submitted assignment does not open or file
is corrupt.
§
You have not followed
steps described in Detailed Instructions
of the problem statement.
§
Assignment is copied (partial or full) from any
source (websites, forums, students, etc.) Strict action will be taken in this
regard.
Note: You have to upload only .doc or .docx file. Assignment in any other format (extension) will
not be accepted and will be awarded with zero marks.
Objectives:
The objective of
this assignment is to provide hands-on experience of System Programming
concepts including:
·
Basic interrupts
·
Invoking interrupts
·
Register Values
For any assignment related query, contact
at CS609@vu.edu.pk
Problem Statement:
Q: Write C program to switch on any
one of the toggle button i.e Caps Lock, Scroll Lock and Num Lock by taking any
one input i.e 1,2 and 3 respectively. Using Switch Case Statement, switch
on the appropriate toggle button and show message for that button. For example
if the user enter 3 then Num Lock should be on and message should be
displayed “Num Lock is On”
Store
all the following 5 lines of strings in 5 array st1,st2,st3, st4, st5 and
through interrupt 65H print proper message i.e
Which
toggle button you want to switch on:
Press
1 for Caps Lock
Press
2 for Scroll Lock
Press
3 for Num Lock
Press
Key(1/2/3):
[DOWNLOAD##download##]
Instructions:
1)
Include all header files and declare 5 string arrays for messages.
2) You should save interrupt 65H vector in
a pointer to vector variable name oldint65 through getvect instruction.
3)
Call any new function i.e newint65( ) through setvect instruction.
4)
Then use scanf to take input in an integer variable i.e scanf(“%d”, &i)
5)
Place service number in AH register. Interrupt 65H will check its value and
will perform relevant function.
6)
Interrupt 65H function must check for Service Number using Switch Statement.
8)
Use keep() function to make this program TSR.
Note:
Your assignment solution will be in this Word file (.doc or .docx)containing
code of C
Best of Luck!
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