assume cs:codesg codesg segment start: mov ax, bx jmp far ptr s ;jmp far ptr 段间转移,也就是0-65535 db 65500 dup (0) ;可是这写成65500竟然会报错。难道这些代码会超过35字节? s: inc ax mov ax, 4c00h int 21h codesg ends end start