format PE console
entry start
section '.code' code readable executable
start:
mov ax, @data
mov ds, ax
mov es, ax
mov ah, 9
mov dx, OFFSET Message1
int 21h
cld
mov si, OFFSET String1
mov di, OFFSET String2
mov cx, 18
rep movsb
mov ah, 9
;mov dx, OFFSET Message2
int 21h
mov dx, OFFSET String1
int 21h
mov dx, OFFSET Message3
int 21h
mov dx, OFFSET String2
int 21h
mov si, OFFSET Diff1
mov di, OFFSET Diff2
mov cx, 39
repz cmpsb
jnz Not_Equal
mov ah, 9
mov dx, OFFSET Message4
int 21h
jmp Next_Operation
Not_Equal:
mov ah, 9
mov dx, OFFSET Message5
int 21h
Next_Operation:
mov di, OFFSET SearchString
mov cx, 36
mov al, 'H'
repne scasb
jnz Not_Found
mov ah, 9
mov dx, OFFSET Message6
int 21h
jmp Lodsb_Example
Not_Found:
mov ah, 9
mov dx, OFFSET Message7
int 21h
Lodsb_Example:
mov ah, 9
mov dx, OFFSET NewLine
int 21h
mov cx, 17
mov si, OFFSET Message
xor bh, bh
mov ah, 0Eh
NextChar:
lodsb
int 10h
loop NextChar
mov ax, 4C00h
int 21h
section '.data' data readable writeable
CR equ 13
LF equ 10
NewLine db CR,LF,0
String1 db 'This is a string!',0
String2 db 18 dup(0)
Diff1 db 'This string is nearly the same as Diff2',0
Diff2 db 'This string is nearly the same as Diff1',0
Equal1 db 'The strings are equal',0
Equal2 db 'The strings are not equal',0
Message db 'This is a message',0
SearchString db '1293ijdkfjiu938uHello983fjkfjsi98934',0
Message1 db 'Using String instructions example program',0
Message2 db CR,LF,'String1 is now: ',0
Message3 db CR,LF,'String2 is now: ',0
Message4 db CR,LF,'Strings are equal!',0
Message5 db CR,LF,'Strings are not equal!',0
Message6 db CR,LF,'Character was found.',0
Message7 db CR,LF,'Character was not found.',0 |
