MFP lab5

10/8/15

MOVSB
CMPSB
DAA
AAA
AAM // now in next lab
AAD // now in next lab

1. Moving a string

data segment
    str1 db 'Hello How are you'
    length1 equ($-str1)
    str2 db 100 dup(0)
data ends

code segment

    assume cs:code, ds:data, es:data
    MOV AX,Data
    MOV DS,AX
    MOV ES,AX

    LEA SI,str1
    LEA DI,str2
    MOV CX,length1
    REP MOVSB

    MOV byte ptr[DI],'$'
    MOV DX,offset str2
    MOV AH,09
    INT 21h
    INT 3
code ends
end


2. finding number of vowels in a string

data segment
    str1 db 'this string has six vowels'
    length1 equ($-str1)

data ends

code segment

    assume cs:code, ds:data, es:data
    MOV AX,Data
    MOV DS,AX
    MOV ES,AX
    MOV BL,0
    MOV CX,length1

    LEA SI,str1
X1: CMP byte ptr[SI],'a'
    JZ next

    CMP byte ptr[SI],'e'
    JZ next

    CMP byte ptr[SI],'i'
    JZ next

    CMP byte ptr[SI],'o'
    JZ next

    CMP byte ptr[SI],'u'
    JZ next

    CMP byte ptr[SI],'A'
    JZ next

    CMP byte ptr[SI],'E'
    JZ next

    CMP byte ptr[SI],'I'
    JZ next

    CMP byte ptr[SI],'O'
    JZ next

    CMP byte ptr[SI],'U'
    JZ next

    CMP SI,CX
    JZ EXIT

    INC SI
    JMP X1

next:   CMP SI,CX
    JZ EXIT


    INC SI
    INC BL
    JMP X1

exit:   INT 3


code ends
end


3. AAA Program

data segment


data ends

code segment

    assume cs:code, ds:data
    MOV AX,Data
    MOV DS,AX
    XOR AX,AX


    MOV AL,35H
    MOV BL,33H
    ADD AL,BL
    AAA

    INT 3


code ends
end


4. DAA Program

data segment


data ends

code segment

    assume cs:code, ds:data
    MOV AX,Data
    MOV DS,AX
    XOR AX,AX


    MOV AL,59H
    MOV BL,35H
    ADD AL,BL
    DAA

    INT 3


code ends
end


5. DAA without DAA

data segment


data ends

code segment

    assume cs:code, ds:data
    MOV AX,data
    MOV DS,AX
    MOV AL,59H
    ADD BL,35H
    ADD AL,BL
    MOV DL,AL
    AND AL,0FH
    CMP AL,09
    JG sixadd

again:  MOV AL,DL
    AND AL,0F0H
    CMP AL,90H
    JG sixtyadd
    JMP exit

sixadd:
    ADD DL,06H
    JMP again

sixtyadd:
    ADD DL,60H

exit:
    MOV AX,DX
    INT 3

code ends
end



ASSIGNMENT:
str1 db 'ABCBA'
str2 db reverse karine nakho

pelindrome or not. use CMPSB.
ek ek character compare karo banne no and jo alag aave to print ke not pelindrome. otherwise pelindrome.