|
+ Link For Assignments, GDBs & Online Quizzes Solution |
+ Link For Past Papers, Solved MCQs, Short Notes & More |
www.vustudents.ning.com
CS401 Assignment No 03 Spring 2019 Solution & Discussion
Share your solutions here!
+ http://bit.ly/vucodes (Link for Assignments, GDBs & Online Quizzes Solution)
+ http://bit.ly/papersvu (Link for Past Papers, Solved MCQs, Short Notes & More)
+ Click Here to Search (Looking For something at vustudents.ning.com?) + Click Here To Join (Our facebook study Group)Views: 3840
- Attachments:
-
-
Spring 2019_CS401_3.docx, 55 KB
-
Replies to This Discussion
-
Permalink Reply by + M.Tariq Malik on
-
CS401-assignment-sol
-
-
Permalink Reply by Sohail Basheer on
-
it is not the solution
-
-
Permalink Reply by Moatar batool on
-
I'm not getting it sir. how can we use this n where ?
-
-
Permalink Reply by M Umar Idrees on
-
Respected sir
This is can not be the solution in any case.Kindly share the solution which is pertinent to the question.
Thanks
-
-
Permalink Reply by muhammad salman khan on
-
A.o.A Vu ID kahan dy gay code ma
-
-
-
This is as close to the working solution as i can get, can someone make some amendments here according to the instructions
https://stackoverflow.com/questions/57134021/how-to-print-a-string-...
-
-
-
CS401 Assignment No 03 Spring 2019 Idea Solution
#Check ur self
#Code
[org 0x0100]
jmp start
oldisr: dd 0 ; space for saving old isr
; keyboard interrupt service routine
kbisr:
push ax
push es
mov ax, 0xb800
mov es, ax ; point es to video memory
in al, 0x60 ; read a character from keyboard port
cmp al, 0x11 ; has the 'w' key pressed
jne nomatch ; no, go to nomatch
mov byte [es:0], '1' ; yes, print 1
mov byte [es:2], '5' ; yes print 0
jmp exit ; leave interrupt routine
nomatch:
pop es
pop ax
jmp far [cs:oldisr] ; call the original ISR
exit
mov al, 0x20
out 0x20, al ; sent EOI to PIC
pop es
pop ax
iret ; return from interrupt
start:
xor ax, ax
mov es, ax ; point es to IVT base
mov ax, [es:9*4]
mov [oldisr], ax ; save offset of old routine
mov ax, [es:9*4+2]
mov [oldisr+2], ax ; save segment of old routine
cli ; disable interrupts
mov word [es:9*4], kbisr ; store offset at n*4
mov [es:9*4+2], cs ; store segment at n*4+2
sti ; enable interrupt
mov dx, start ; end of resident portion
add dx, 15 ; round up to next para
mov cl, 4
shr dx, cl ; number of paras
mov ax, 0x3100 ; terminate and stay residant
int 0x21
-
-
-
[org 0x0100]
jmp start
oldisr: dd 0 ; space for saving old isr
; keyboard interrupt service routine
kbisr:
push ax
push es
mov ax, 0xb800
mov es, ax ; point es to video memory
in al, 0x60 ; read a character from keyboard port
cmp al, 0x11 ; has the 'w' key pressed
jne nomatch ; no, go to nomatch
mov byte [es:0], '1' ; yes, print 1
mov byte [es:2], '5' ; yes print 0
jmp exit ; leave interrupt routine
nomatch:
pop es
pop ax
jmp far [cs:oldisr] ; call the original ISR
exit
mov al, 0x20
out 0x20, al ; sent EOI to PIC
pop es
pop ax
iret ; return from interrupt
start:
xor ax, ax
mov es, ax ; point es to IVT base
mov ax, [es:9*4]
mov [oldisr], ax ; save offset of old routine
mov ax, [es:9*4+2]
mov [oldisr+2], ax ; save segment of old routine
cli ; disable interrupts
mov word [es:9*4], kbisr ; store offset at n*4
mov [es:9*4+2], cs ; store segment at n*4+2
sti ; enable interrupt
mov dx, start ; end of resident portion
add dx, 15 ; round up to next para
mov cl, 4
shr dx, cl ; number of paras
mov ax, 0x3100 ; terminate and stay residant
int 0x21 -
-
-
it is not correct. Please read question once.
-
-
-
correct solution?
-
-
-
cs401 assignment solution.
[org 0x0100]
jmp start
oldisr: dd 0 ; space for saving old isr
; keyboard interrupt service routine
kbisr:
push ax
push es
mov ax, 0xb800
mov es, ax ; point es to video memory
in al, 0x60 ; read a character from keyboard port
cmp al, 0x11 ; has the 'w' key pressed
jne nomatch ; no, go to nomatch
mov byte [es:0], '1' ; yes, print 1
mov byte [es:2], '5' ; yes print 0
jmp exit ; leave interrupt routine
nomatch:
pop es
pop ax
jmp far [cs:oldisr] ; call the original ISR
exit
mov al, 0x20
out 0x20, al ; sent EOI to PIC
pop es
pop ax
iret ; return from interrupt
start:
xor ax, ax
mov es, ax ; point es to IVT base
mov ax, [es:9*4]
mov [oldisr], ax ; save offset of old routine
mov ax, [es:9*4+2]
mov [oldisr+2], ax ; save segment of old routine
cli ; disable interrupts
mov word [es:9*4], kbisr ; store offset at n*4
mov [es:9*4+2], cs ; store segment at n*4+2
sti ; enable interrupt
mov dx, start ; end of resident portion
add dx, 15 ; round up to next para
mov cl, 4
shr dx, cl ; number of paras
mov ax, 0x3100 ; terminate and stay residant
int 0x21
-
- ‹ Previous
- 1
- 2
- 3
- Next ›
Looking For Something? Search Below
Latest Activity
© 2021 Created by + M.Tariq Malik.
Powered by
Promote Us | Report an Issue | Privacy Policy | Terms of Service
