.MODEL SMALL
.DATA

Str1    db "bcdfcdgdrt"
Str2    db "bydfcygdrx"
Result  db "0000000000"
C       db 0

.CODE
.STARTUP

COMPARE MACRO S1, S2
LOCAL L1, L2

LEA SI, S1
LEA DI, S2
MOV CX, 10

L1:
MOV AL, [SI]
MOV BL, [DI]
CMP AL, BL
JNE L2

PUSH SI
LEA SI, Result
MOV DX, 10
SUB DX, CX
ADD SI, DX
MOV BL, "1"
MOV [SI], BL
POP SI

L2:
INC SI
INC DI
LOOP L1

COMPARE ENDM

COMPARE Str1, Str2

.EXIT
END