彙編LEA的使用

LEA is useful for initializing a register with an offset address.
LEA register, memory
功能：將源操作數的有效地址傳給一個通用寄存器；

代碼實例

DATASEG SEGMENT para 'data'
    bytetbl  db 10H,11H,12H,1AH
dataseg  ends
;
codeseg segment para 'code'
main proc far
    assume ds:dataseg,cs:codeseg
    mov ax,dataseg
    mov ds,ax
    ;
    lea bx,bytetbl
    mov si,0
    mov al,2[bx][si]
    ;
    mov ax,4c00h
    int 21h
main endp
codeseg ends
    end main