2、取值运算符 1)S运算符 BLOCK“H S:当前地址偏移量的值 BLOCK DB 'HELLOW NUM EQU S- BLOCK NUM为6 1212 2、取值运算符 1) $运算符 $：当前地址偏移量的值 BLOCK DB ‘HELLO!’ NUM EQU $-BLOCK ‘H’ ‘E’ ‘L’ ‘L’ ‘O’ ‘!’ BLOCK $ ;NUM为 6