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XOR AH,AH CLC MOV DX,0 MOV BH,0
XOR AH,AH CLC MOV DX,0 MOV BH,0
XOR AH,AH CLC MOV DX,0 MOV BH,0
AL=100H BL=01H AL=64H BL=0FFH AL=64H BL=82H AL=100H BL=FFH
XOR AH,AH CLC MOV DX,0 MOV BH,0
XOR AH,AH CLC MOV DX,0 MOV BH,0
AL=100H BL=02H AL=64H BL=0FEH AL=64H BL=82H AL=100H BL=0FEH