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STACK SEGMENT STACK
DB 64 DUP(?)
STACK ENDS
DATA SEGMENT
DB 06H,12H,88H,82H,90H,22H,33H
DATA ENDS
CODE SEGMENT
ASSUME CS:CODE,SS:STACK,DS:DATA
START:MOV AX,DATA
MOV DS,AX
MOV DI,0000H
MOV CL,[DI]
XOR CH,CH
MOV BL,CH
INC DI
A1: MOV AL,[DI]
TEST AL,80H
JE A2
INC BL
A2: INC DI
LOOP A1
MOV [DI],BL
MOV AX,4C00H
INT 21H
CODE ENDS
END START