1. Microprocessor Lab
For
IV Semester Electronics & Communication
Department of Electronics & Communication
Sri Siddhartha Institute of Technology
Maralur, Tumkur

2. CONTENTS
8085 MICROPROCESSOR LAB PROGRAMS
1. To move data block from one location to other without overlap
2. To move data block from one location to other with overlap
3. To arrange a set of 8-bit numbers in ascending order
4. Addition of binary numbers
5. To add two multibyte binary numbers
6. To add 2-digit BCD numbers
7. To subtract 16-bit binary numbers
8. To check the fourth bit of a byte
9. To generate resultant byte for given Boolean equation
10. Successive addition of two unsigned binary numbers
11. To find the product of two unsigned binary numbers
12. To divide two 16 bit numbers
13. To implement counter from 00-99
14. To implement counter from 99-00
15. To implement counter from 00-FF
16. To implement counter from FF-00
17. To check 2 out of 5 code
18. To add ‘N’ one byte binary numbers
19. To realize real time clock
20. To convert binary to BCD equivalent
21. To convert binary to ASCII equivalent
22. To convert ASCII to binary equivalent
23. To convert BCD to binary equivalent
INTERFACING PROGRAMS
24. To generate square wave of given duty cycle using DAC
25. To generate a triangular waveform using DAC
26. To generate a staircase waveform using DAC
27. To sense a keyboard
28. To implement a moving display of a given string of digits
29. To display a message on the display unit using 8279 chip
30. To simulate throw of a dice

3. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 1
1) (a) An ALP to transfer a given block of data from source memory block to destination memory block with
out overlap
data segment
var1 dw 12h,34h,45h,67h,56h
cnt dw 5
res dw ?
data ends
code segment
assume cs:code,ds:data
start:
next:
mov ax,data
mov ds,ax
mov ax,cnt
mov si,0000h
mov ax,var1[si]
mov res[si],ax
inc si
inc si
loop next
mov ah,4ch
int 21h
code ends
end start

4. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 2
1 (b) An ALP to transfer a given block of data from source memory block to destination memory block with
overlap
data segment
y db 3 dup(0)
x db 11h,22h,33h,44h,55h
data ends
code segment
assume cs:code,ds:data
start:
loc1:
mov ax,data
mov ds,ax
lea si,x
lea di,y
mov cx,0005h
mov al,[si]
mov[di],al
inc si
inc di
dec cx
jnz loc1
mov ah,4ch
int 21h
code ends
end start

5. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 3
2) An ALP to add 16-bit bytes/words & to find the average of numbers.
data segment
N1 dw 0020h,0002h,0002h,0002h
res dw ?
cnt db 04h
data ends
code segment
assume cs:code,ds:data
start:
next:
mov ax,data
mov ds,ax
mov cl,cnt
mov si,0000h
mov dx,0000h
mov ax,N1[si]
add dx,ax
inc si
inc si
loop next
mov ax,dx
div cnt
mov res,ax
mov ah,4Ch
int 21h
code ends
end start

6. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 4
3) An ALP to multiply two 32 bit numbers
data segment
n1 dw 0AFFh,0AFFh
n2 dw 0330h,4002h
res dw ?
data ends
code segment
assume cs:code,ds:data
start: mov ax,data
mov ds,ax
mov si,0000h
mov ax,n1[si]
mul n2[si]
mov res,ax
mov bx,dx
mov ax,n1[si+2]
mul n2[si]
add bx,ax
mov cx,dx
mov ax,n1[si]
mul n2[si+2]
add bx,ax
adc cx,dx
mov res+2,bx
mov ax,n1[si+2]
mul n2[si+2]
mul n2[si+2]
add cx,ax
mov res+4,cx
adc dx,0000h
mov res+6,dx
mov ah,4ch
int 21h
code ends
end start

7. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 5
4)An ALP to multiply two ASCII byte numbers
data segment
n1 db '3'
n2 db '2'
res db ?
data ends
code segment
assume cs:code,ds:data
start: mov ax,data
mov ds,ax
mov al,n1
mov bl,n2
sub al,30h
sub bl,30h
mul bl
aam
add ax,3030h
mov res,al
mov res+1,ah
mov ah,4Ch
int 21h
code ends
end start

8. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 6
5)(a) An ALP to find LCM of two 16 bit unsigned integers.
data segment
n1 dw 019h
n2 dw 00Fh
lcm dw 2 dup(?)
data ends
code segment
assume cs:code,ds:datastart:
Start:
again:
nincdx:
exit:
mov ax,data
mov ds,ax
mov ax,n1
mov bx,n2
mov dx,0000h
push ax
push dx
div bx
cmp dx,0000h
je exit
pop dx
pop ax
add ax,n1
jnc nincdx
inc dx
jmp again
pop lcm+2
pop lcm
mov ah,4ch
int 21h
code ends
end start

9. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 7
5)(b) An ALP to find GCF of two 16 bit unsigned integers.
data segment
n1 dw 005Ah,0078h
res dw ?
data ends
code segment
assume cs:code,ds:data
start:
again:
above:
big:
exit:
mov ax,data
mov ds,ax
mov ax,n1
mov bx,n1+2
cmp ax,bx
je exit
jb big
mov dx,0h
div bx
cmp dx,0
je exit
mov ax,dx
jmp again
xchg ax,bx
jmp above
mov res,bx
mov ah,4Ch
int 21h
code ends
end start

10. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 8
6)(a) An ALP to sort a given set of 16 bit unsigned integers into ascending order using insertion sort.
Program to sort a given a 16bit unsigned integers into ascending order using insertion sort
data segment
a dw 78h,34h,12h,56h
si_ze dw ($-a)/2
data ends
code segment
assume cs:code,ds:data
start :
outloop:
inloop :
inexit :
mov ax,data
mov ds,ax
mov cx,2
mov dx,cx
dec dx
mov si,dx
add si,si
mov ax,a[si]
cmp a[si-2],ax
jbe inexit
mov di,a[si-2]
mov a[si],di
dec si
dec si
dec dx
jnz inloop
mov a[si],ax
inc cx
cmp cx,si_ze
jbe outloop
int 21h
code ends
end start

11. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 9
6)(b) An ALP to sort a given set of 16 bit unsigned integers into ascending order using bubble sort.
data segment
a db 34h,78h,12h,56h
size dw $-a
data ends
code segment
assume cs:code,ds:data
start:
outloop:
inloop:
nochang:
mov ax,data
mov ds,ax
mov bx,size
dec bx
mov cx,bx
mov si,0
mov al,a[si]
inc si
cmp al,a[si]
jb nochang
xchg al,a[si]
mov a[si-1].al
loop inloop
dec bx
jnz outloop
mov ah,4ch
int 21h
code ends
end start

12. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 10
7) An ALP to generate 10 fibonacci numbers.(Read initial values via key board)
data segment
n db 01fh
fib db 15 dup(?)
data ends
code segment
assume cs:code,ds:data
start:
term :
exit :
fibo :
exit1:
exit2:
mov ax,data
mov ds,ax
mov bx,0
mov dl,0
push bx
call fibo
pop bx
cmp dx,n
ja exit
mov fib[bx],dx
inc bx
jmp term
mov ah,4ch
int 3
cmp bx,0
je exit1
cmp bx,1
je exit2
dec bl
push bx
call fibo
pop bx
dec bx
call fibo
ret
ret
inc dl
ret
align 16
code ends
end start

13. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 11
8) An ALP to generate prime numbers from 1 to 50 BCD.
data segment
x db 2,14 dup(?)
data ends
code segment
assume cs:code,ds:data
start:
loc1:
loc2:
mov ax,data
mov ds,ax
mov dl,x
lea si,x+1
mov ch,14
mov dh,02
inc dl
mov ah,0
mov al,dl
div dh
cmp ah,0
je loc1
inc dh
cmp dh,dl
jb loc2
mov al,1
mul dl
aam
mov cl,04
rol al,cl
ror ax,cl
mov[si],al
inc si
dec ch
jnz loc1
mov ah,4ch
int 21h
code ends
end start

14. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 12
9)An ALP to transfer given source string to destination string using string instructions.
Data segment
d1 db "welcome","$"
d2 db 10dup(0)
data ends
code segment
assume cs:code,ds:data
start: mov ax,data
mov ds,ax
mov es,ax
mov cx,07h
cld
mov si,offset d1
mov di,offset d2
rep movsb
mov cx,07h
std
mov si,offset d1+6
mov di,offset d2+14
rep movsb
mov ah,4ch
int 21h
code ends
end start

15. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 13
10)An ALP to perform the following operations.
(a) Reverse a string.
data segment
m1 db 10,13,'enter the string:$'
m2 db 10,13,'reverse of a string:$'
buff db 80
db 0
db 80 dup(0)
counter1 dw 0
counter2 dw 0
data ends
code segment
assume cs: code, ds:data
start:
back:
exit:
mov ax,data
mov ds,ax
mov ah,09h
mov dx,offset m1
int 21h
mov ah,0ah
lea dx,buff
int 21h
mov ah,09h
mov dx,offset m2
int 21h
lea bx,buff
inc bx
mov ch,00
mov cl,buff+1
mov di,cx
mov dl,[bx+di]
mov ah,02h
int 21h
dec di
jnz back
mov ah,4ch
int 21h
code ends
end start

16. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 14
(b)Deleting a word from a string.
data segment
x db 'aa','bb', 'cc','dd','ee','ff'
z dw (z-x)/2
data ends
code segment
assume cs:code,ds:data
start:
loc1:
loc2:
mov ax,data
mov ds,ax
mov es,ax
lea di,x
mov cx,z
cld
mov ax,'cc' ;word to be deleted
repne scasw
cmp cx,0
je loc2
mov ax,[di]
mov [di-2],ax
inc di
inc di
dec cx
jnz loc1
mov byte ptr[di-2],'$'
lea dx,x
mov ah,09h
int 21h
mov ah,4ch
int 21h
code ends
end start

17. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 15
c)Searching a word from a string.
data segment
n1 db 12h,14h,78h,67h,34h
key db 23h
cnt db 5
m1 db 'the key found in'
res db 'the position ',13h,10h,'$'
m2 db 'not found',13h,10h,'$'
data ends
code segment
assume cs:
start:
next:
suc:
fall:
exit:
code,ds:data
mov ax,data
mov ds,ax
mov si,00h
mov cx,cnt
mov al,n1[si]
cmp al,key
jz suc
inc si
loop next
jmp fall
mov ax,si
add al,01h
add al,'0'
mov res,al
lea dx,m1
jmp exit
lea dx,m2
jmp exit
mov ah,09h
int 21h
mov ah,4ch
int 21h
code ends
end start

18. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 16
(d) To check whether a string is palindrome or not.
data segment
inst db 20 dup(0)
mes1 db 0Ah,0Dh,"insert the string:$"
mes2 db 0Ah,0Dh,"it is a palindrome:$"
mes3 db 0Ah,0Dh,"it is not a palindrome:$"
data ends
code segment
assume cs:code,ds:data
start:
up:
down:
check:
fail:
finish:
term:
mov ax,data
mov ds,ax
mov ah,09h
lea dx,mes1
int 21
mov bx,00h
mov ah,01h
int 21h
cmp al,0Dh
jz down
mov[inst+bx],al
inc bx
jmp up
mov di,00h
dec bx
mov al,[inst+bx]
cmp al,[inst+di]
jne fail
inc di
dec bx
jnz check
jmp finish
mov ah,09h
lea dx,mes3
int 21h
jmp term
mov ah,09h
lea dx,mes2
int 21h
mov ah,4Ch
int 21h
code ends
end start

19. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 17
11) An ALP to multiply two matrices .
data segment
ar1 db 1h,2h,-3h
ar2 db 4h,5h,6h
ar3 db 2h,-1h,3h
bc1 db 2h,4h,-4h
bc2 db 3h,-2h,5h
bc3 db 1h,5h,2h
c db 9 dup (?)
l2 db (?)
l1 db (?)
data ends
code segment
assume cs:code,ds:data
start:
repeat2:
repeat1:
again:
mov ax,data
mov ds,ax
mov es,ax
mov bp,0h
mov l2,3h
lea si,ar1
lea di,bc1
mov l1,3h
mov cx,3h
mov bx,0h
mov dl,0h
mov al,[si][bx]
imul byte ptr[di][bx]
add dl,al
inc bx
loop again
mov ds:c[bp],dl
inc bp
add di,3h
dec l1
jne repeat1
add si,3h
dec l2
jne repeat2
mov ah,4ch
int 21h
code ends
end start

20. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 18
12)(a) An ALP to find trace of a matrix.
data segment
matrix db 0ffh, 0ffh, 0ffh, 0ffh, 0ffh, 0ffh, 0ffh, 0ffh, 0ffh ;3*3
row dw 0003h ;no. of rows
col dw 0003h ;no. of cols
trace dw ?
data ends
code segment
assume cs:code,ds:data
start:
again:
skip:
fail:
ovr:
mov ax,data
mov ds,ax
mov si,00h
mov bx,00h
mov ax,row
cmp ax,col
jnz fail
mov ax,00h
mov cx,row
add al,matrix[si][bx]
jnc skip
inc ah
inc si
add bx,col
loop again
mov trace,ax
jmp ovr
mov trace,00h
mov ah,4ch
int 21h
code ends
end start

21. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 19
12)(b) An ALP to find the norms of the matrix.
Program to find trace of the matrix
data segment
matrix db 0ffh,0ffh,0ffh,0ffh,0ffh,0ffh,0ffh,0ffh,0ffh ;3x3row dw 0003h ;no. of rows
col dw 0003h ;no. of cols
norm dw 2 dup (0000h)
data ends
code segment
assume cs:code,ds:data
start:
again:
skip:
fail:
ovr:
mov ax,data
mov ds,ax
mov si,00h
mov bx,00h
mov ax,row
cmp ax,col
jnz fail
mov cx,row
mov ax,norm
mov al,matrix[si][bx]
mul matrix[si][bx]
mov ax,norm
jnc skip
add norm+2,01h
inc ah
mov norm,ax
inc si
add bx,0003h
loop again
jmp ovr
mov norm,00h
mov ah,4ch
int 21h
code ends
end start

22. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 20
13)An ALP to search that implements binary search algorithm.
data segment
x dw 11h,22h,33h,44h,55h,66h,77h
z dw (z-x)
key dw 66h
y dw ?
data ends
code segment
assume cs:code,ds:data
start:
loc3:
loc5:
loc4:
loc1:
loc2:
mov ax,data
mov ds,ax
mov cx,key
mov dx,z
dec bx
mov bx,0
mov si,bx
add si,1
and si,0fffeh
cmp cx,x[si]
je loc1
jb loc2
add si,2
mov bx,si
cmp bx,dx
jna loc3
mov y,0
mov ah,4ch
int 21h
shr si,1
inc si
mov y,si
jmp loc1
sub si,2
mov dx,si
jmp loc5
mov ah,4ch
int 21h
code ends
end start

23. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 21
Part-II 8051 8-bit Microcontroller
1. Program to transfer a block from source to destination
ADDRESS LABEL MNEMONIC
8000 MOV DPTR,#9000H
8003 MOV R0,#04H
8005 MOV R1,#90H
8007 MOV R2,#91H
8009 BACK MOVX A,@DPTR
800A MOV 83H,R2
800C MOVX @DPTR,A
800D MOV 83H,R1
800F INC DPTR
8010 DJNZ R0,8009(BACK)
8012 LCALL 0003

24. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 22
2. Program to exchange data between two blocks
Starting address of block1, data memory 9000& starting address of block2, data memory 9100.
ADDRESS LABEL MNEMONIC
8000 MOV DPTR, #9000H
8003 MOV R0, #04H
8005 MOV R1, #90H
8007 MOV R2, #91H
8009 MOVX A, @DPTR
800A MOV R3, A
800B MOV 83H,R2
800D MOVX A, @DPTR
800E MOV 83H,R1
8010 MOVX @DPTR, A
8011 MOV A, R3
8012 MOV 83H,R2
8014 MOVX @DPTR, A
8015 MOV 83H,R1
8017 INC DPTR
8018 DJNZ R0, 8009
801A LCALL 0003

25. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 23
3.Program to find average of n numbers.
ADDRESS LABEL MNEMONIC
8000 MOV DPTR,#9000H
8003 MOV R0,#O4H
8005 MOV R1,#00H
8007 MOV R2,#00H
8009 CLR C
800A MOV R4,#04H
800C BACK MOVX A,DPTR
800D MOV R3,A
800E INC DPTR
800F MOV A,R1
8010 ADD A,R3
8011 JNC 8014H(AHEAD)
8013 IND R2
8014 AHEAD MOV R1,A
8015 DJNZ R0,800CH
8017 MOV R5,#00H
8019 CLR C
801A MOV A,R1
801B AGAIN SUBB A,R4
801C INC R5
801D JC 8021H
801F SJMP 801BH
8021 NEXT CJNE R2,#00H,802CH
8024 DEC R5
8025 ADD A,R4
8026 MOVX @DPTR,A
8027 MOV A,R5
8028 INC DPTR
8029 MOVX @DPTR,A
802A SJMP 802FH(END)
802C LOC DEC R2
802D SJMP 801BH
802F END LCALL 0003

26. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 24
4. Program to multiply a 16 bit number with an 8 bit number
8 bit stored at data memory 9000 & 16 bit stored at data memory 9001 & 9002, result stored at data memory 9003, 9004 &
9005.
ADDRESS LABEL MNEMONIC
8000 MOV DPTR,#9000
8003 MOVX A,@DPTR
8004 MOV RO,A
8005 INC DPTR
8006 MOVX A,DPTR
8007 MOV R1,A
8008 INC DPTR
8009 MOVX A,DPTR
800B MOV F0,A
800C MOV A,RO
800D MUL AB
800E MOV R3,A
8010 MOV R4,F0
8012 MOV F0,R1
8013 MOV A,R0
8014 MUL AB
8015 MOV R5,A
8017 MOV R6,F0
8018 INC DPTR
8019 MOV A,R3
801A MOVX @DPTR,A
801B MOV A,R4
801C CLR C
801D INC DPTR
801E ADD A,R5
801F MOVX @DPTR,A
8021 MOV A,#00
8022 ADDC A,R6
8023 INC DPTR
8024 MOVX @DPTR,A
8026 LCALL 0003
.

27. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 25
5. Program to generate 10 Fibonacci numbers.
Stored in data memory address 9000 & 9001
ADDRESS LABEL MNEMONIC
8000 MOV DPTR,#9000
8003 MOV R3,#08
8005 MOVX A,@DPTR
8006 MOV R0,A
8007 INC DPTR
8008 MOVX A,@DPTR
8009 BACK XCH A,R0
800A ADD A,R0
800B INC DPTR
800C MOVX @DPTR,A
800D DJNZ R3,BACK(8009)
800F LCALL 0003

28. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 26
. Program to find GCD & LCM of two 8-bit numbers.
Two 8-bit numbers are stored at location 9000&9001, GCD at location 9002 & LCM At location 9003
ADDRESS LABEL MNEUMONIC
8000 MOV DPTR,#9000H
8003 MOVX A,@DPTR
8004 MOV R0,A
8005 NOP
8006 INC DPTR
8007 MOVX A,@DPTR
8008 CJNE A,000H,NEXT(800D
800B SJMP AHEAD(8014)
800D JNC GO(8010)
800F XCH A,R1
8010 CLR C
8011 SUBB A,R0
8012 SJMP BACK(8008)
8014 INC DPTR
8015 MOVX @DPTR,A
8016 INC DPTR
8017 MOV 0F0H,A
8000 MOV 82H,#OOH
8000 MOVX A,@DPTR
8000 DIV AB
8000 MOV OFOH,A
8000 INC DPTR
8000 MOVX A,@DPTR
8000 MUL AB
8000 MOV 82H,#03H
8000 MOVX @DPTR,A
LCALL 0003

29. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 27
7(a) Program to add multibyte numbers
ADDRESS LABEL MNEMONIC
8000 MOV DPTR,#9000H
8003 MOV R1,#04H
8005 MOV R2,#90H
8007 MOV R3,#91H
8009 MOV R4,#92H
800B CLR C
800C MOV 83H,R2
800E MOVX A,@DPTR
800F MOV R5,A
8010 MOV 83H,R3
8012 MOVX A,@DPTR
8013 ADDC A,R5
8014 MOV 83H,R4
8016 MOVX @DPTR,A
8017 INC DPTR
8018 DJNZ R1,800CH
801A JNC 801FH
801C MOV A,#01H
801E MOVX @DPTR,A
801F LCALL 0003

30. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 28
7(b) program to subtract multibyte numbers
ADDRESS LABEL MNEMONIC
8000 MOV DPTR,#9000H
8003 MOV R1,#04H
8005 MOV R2,#90H
8007 MOV R3,#91H
8009 MOV R4,#92H
800B CLR C
800C MOV 83H,R2
800E MOVX A,@DPTR
800F MOV R5,A
8010 MOV 83H,R3
8012 MOVX A,@DPTR
8013 SUBB A,R5
8014 MOV 83H,R4
8016 MOVX @DPTR,A
8017 INC DPTR
8018 DJNZ R1,800CH
801A LCALL 0003H
801C MOV A,#01H
801E MOVX @DPTR,A
801F LCALL 0003

31. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 29
8.Program to search the key element in the block of data and displays it’s position and it’s position number if
it is found, else display not found.
ADDRESS LABEL MNEOMONIC
8000 MOV 0DOH,#20H
8003 MOV DPTR,#9000H
8006 MOV R2,00H
8008 MOV R1,#04H
800A MOVX A,@DPTR
800B MOV R0,A
800C INC DPTR
800D INC R2
800E MOVX A,@DPTR
800F CJNE A,00H,8014H
8012 SJMP 801BH
8014 DJNZ R1,800CH
8016 MOV DPTR,#9500H
8019 SJMP 8025H
801B MOV A,R2
801C ADD A,#30H
801E MOV DPTR,#940CH
8021 MOVX @DPTR,A
8022 MOV DPTR,#9400H
8025 LCALL 164BH
8028 LCALL 0003

32. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 30
9. Program to sort the number in ascending order using bubble sort.
ADDRESS LABEL MNEMONIC
8000 MOV DPTR,#9000
8003 MOV R1,#04H
8005 AGAIN PUSH 82H
8007 MOV A,R1
8008 MOV R4,A
8009 MOV R2,82H
800B BACK MOVX A,@DPTR
800C MOV R3,A
800D INC DPTR
800E INC R2
800F MOVX A,DPTR
8010 CJNE A,03H,NEXT(8015)
8013 SJMP AHEAD(8020)
8015 NEXT JNC AHEAD
8017 DEC R2
8018 MOV 82H,R2
801A MOVX @DPTR,A
801B MOV A,R3
801C INC R2
801D MOV 82H,R2
801F MOVX @DPTR,A
8020 AHEAD DJNZ R4,BACK(800B)
8022 POP 82H
8024 NOP
8025 DJNZ R1,AGAIN(8005)
8027 LCALL 0003

33. Sri Siddhartha Institute of Technology
Department of Electronics & Communication 31
VISVESHWARAIAH TECHNOLOGICAL UNIVERSITY, BELGAUM
Branch: EC Semester: VI
Subject code: EC6L2
Subject title: Advanced microprocessor & Micro controller lab
QUESTION BANK
Instructions:
1.Experiments on micro controller can be carried out using any 8-bit/16-bit micro controller kit.
2.A student should be given only one question either from part-1 or from part-II for the examination.
3.For each batch in examination, around 60% of the questions should be from part-I and around 40% of the questions should be from part-II.
4.No change of experiment/question is permitted in the examination.
PART-I
1.Write an ALP to transfer a given block of data (byte/word) from source memory block to destination memory block with or without overlapping.
2. Write an ALP to transfer given source string to destination using string instructions.
3.Write an ALP to perform the following string operations:
a) Reverse a string, search/delete a word from a string
b) Check if the given string is palindrome or not.
4.Write an ALP to add 16 bytes/words and find the average and display.
5.write an ALP to multiply two 32 bit numbers and display.
6.Write an ALP to multiply two ASCII byte numbers and display.
7.Develop and execute an ALP to find GCF/LCM of two 16-bit unsigned integers.
8.Develop and execute an ALP to sort a given set of 16-bit unsigned integers into ascending order using insertion/bubble sort algorithm.
9.Write an ALP to generate 10 fibonacci numbers, Read initial values via keyboard.
10.Write an Alp to generate prime numbers between 1 to 50 BCD.
11.Write an ALP to multiply two matrices &display.
12.Write an ALP to find
a) Sum of principal diagonal elements (trace of a matrix)
b) Norms of the matrix (sum of the squares of the principal diagonal elements)
13.Develop and execute an ALP that implements binary search algorithm. Assume that the data consist of sorted 16-bit integers. Search key is also a 16-bit
unsigned integer.
14.Interface a logic controller via 8255 using I/O cards and perform the following operations.
Read all the 8 inputs from the logic controller. Complement and display on the outputs.
PART-II
15.Write an Alp to transfer a block of data from a given source to destination using 8051/equivalent.
16.Writ an ALP to find average of 10 data bytes in a memory using 8051/equivalent.
17.Write an ALP to multiply 16bit by 8-bit data using micro controller.
18 Write an ALP to generate 10 fibonacci numbers using 8051/equivalent.
19.Interface a printer to 8051/equivalent to operate in
a) Handshake mode
b) Interrupt driven mode
20.Develop and execute an ALP to find GCF/LCM of two 8-bit numbers using 8051/equivalent.
21.Write an ALP to add/subtract two multibyte numbers using micro controller.
22.Write an ALP to search a given key element from an array of integers using 8051/equivalent.
23.Write an ALP to sort an array using bubble sort. Display the sorted array.
24.Write an ALP to interchange two blocks of data residing at memory using 8051/equivalent.

34. Operation Code-Sheet
Department of E & C SSIT
Mnemonic Hex Mnemonic Hex Mnemonic Hex Mnemonic Hex
ACI 8-bit CE DCX SP 3B MOV D, H 54 RAR 1F
ADC A 8F DI F3 MOV D, L 55 RC D8
ADC B 88 EI FB MOV D, M 56 RET C9
ADC C 89 HLT 76 MOV E, A 5F RIM C2
ADC D 8A IN 8-bit DB MOV E, B 58 RLC 07
ADC E 8B INR A 3C MOV E, C 59 RM F8
ADC H 8C INR B 04 MOV E, D 5A RNC D0
ADC L 8D INR C 0C MOV E, E 5B RNZ C0
ADC M 8E INR D 14 MOV E, H 5C RP F0
ADD A 87 INR E 1C MOV E, L 5D RPE E8
ADD B 80 INR H 24 MOV E, M 5E RPO E0
ADD C 81 INR L 2C MOV H, A 67 RRC 0F
ADD D 82 INR M 34 MOV H, B 60 RST 0 C7
ADD E 83 INX B 03 MOV H, C 61 RST 1 CF
ADD H 84 INX D 13 MOV H, D 62 RST 2 D7
ADD L 85 INX H 23 MOV H, E 63 RST 3 DF
ADD M 86 INX SP 33 MOV H, H 64 RST 4 E7
ADI 8-bit C6 JC 16-bit DA MOV H, L 65 RST 5 EF
ANA A A7 JM 16-bit FA MOV H, M 66 RST 6 F7
ANA B A0 JMP 16-bit C3 MOV L, A 6F RST 7 FF
ANA C A1 JNC 16-bit D2 MOV L, B 68 RZ C8
ANA D A2 JNZ 16-bit C2 MOV L, C 69 SBB A 9F
ANA E A3 JP 16-bit F2 MOV L, D 6A SBB B 98
ANA H A4 JPE 16-bit EA MOV L, E 6B SBB C 99
ANA L A5 JPO 16-bit E2 MOV L, H 6C SBB D 9A
ANA M A6 JZ 16-bit CA MOV L, L 6D SBB E 9B
ANI 8-bit E6 LDA 16-bit 3A MOV L, M 6E SBB H 9C
CALL 16-bit CD LDAX B 0A MOV M, A 77 SBB L 9D
CC 16-bit DC LDAX D 1A MOV M, B 70 SBB M 9E
CM 16-bit FC LHLD 16-bit 2A MOV M, C 71 SBI 8-bit DE
CMA 2F LXI B, 16-bit 01 MOV M, D 72 SHLD 16-bit 22
CMC 3F LXI D, 16-bit 11 MOV M, E 73 SIM 30
CMP A BF LXI H, 16-bit 21 MOV M, H 74 SPHL F9
CMP B B8 LXI SP, 16-bit 31 MOV M, L 75 STA 16-bit 32
CMP C B9 MOV A, A 7F MVI A, 8-bit 3E STAX B 02
CMP D BA MOV A, B 78 MVI B, 8-bit 06 STAX D 12
CMP E BB MOV A, C 79 MVI C, 8-bit 0E STC 37
CMP H BC MOV A, D 7A MVI D, 8-bit 16 SUB A 97
CMP L BD MOV A, E 7B MVI E, 8-bit 1E SUB B 90
CMP M BE MOV A, H 7C MVI H, 8-bit 26 SUB C 91
CNC 16-bit D4 MOV A, L 7D MVI L, 8-bit 2E SUB D 92
CNZ 16-bit C4 MOV A, M 7E MVI M, 8-bit 36 SUB E 93
CP 16-bit F4 MOV B, A 47 NOP 00 SUB H 94
CPE 16-bit EC MOV B, B 40 ORA A B7 SUB L 95
CPI 8-bit FE MOV B, C 41 ORA B B0 SUB M 96
CPO 16-bit E4 MOV B, D 42 ORA C B1 SUI 8-bit D6
CZ 16-bit CC MOV B, E 43 ORA D B2 XCHG EB
DAA 27 MOV B, H 44 ORA E B3 XRA A AF
DAD B 09 MOV B, L 45 ORA H B4 XRA B A8
DAD D 19 MOV B, M 46 ORA L B5 XRA C A9
DAD H 29 MOV C, A 4F ORA M B6 XRA D AA
DAD SP 39 MOV C, B 48 ORI 8-bit F6 XRA E AB
DCR A 3D MOV C, C 49 OUT 8-bit D3 XRA H AC
DCR B 05 MOV C, D 4A PCHL E9 XRA L AD
DCR C 0D MOV C, E 4B POP B C1 XRA M AE
DCR D 15 MOV C, H 4C POP D D1 XRI 8-bit EE
DCR E 1D MOV C, L 4D POP H E1 XTHL E3
DCR H 25 MOV C, M 4E POP PSW F1 UPDAD 06BF
DCR L 2D MOV D, A 57 PUSH B C5 UPDDT 06D6
DCR M 35 MOV D, B 50 PUSH D D5
DCX B 0B MOV D, C 51 PUSH H E5
DCX D 1B MOV D, D 52 PUSH PSW F5
DCX H 2B MOV D, E 53 RAL 17