实验十:心型跑马灯
实验器材:
参照实验一
实验电路:
源程序:
;author:liuxianfei0810
stack segment
dw 10 dup(?)
stack ends
;author:liuxianfei0810
code segment
assume ss:stack
;author:liuxianfei0810
START:
mov ax,stack
mov ss,ax
mov sp,800;程序设定
;author:liuxianfei0810
mov BX,0aaaaH
L: mov DX,030H
in AL,DX
test AL,1
jz M
not BX
N: mov AX,BX
mov DX,030H
out DX,AX
;author:liuxianfei0810
PUSH BX
;author:liuxianfei0810
;delay:
; mov cx,02h
; loop delay
MOV BX,0001H
mov cx,0fh
;author:liuxianfei0810
E: mov AX,BX
mov DX,030H
out DX,AX
ROL BX,1;循环左移
LOOP E;CX!=0
;author:liuxianfei0810
M: mov BX,0ffffh
mov AX,BX
mov DX,030H
out DX,AX
;author:liuxianfei0810
; POP BX
;M: mov AX,BX
; mov DX,030H
; out DX,AX
;author:liuxianfei0810
POP BX
jmp L
code ends
end START
仿真视频:
《微机原理接口与技术》(8086汇编)期末考试、考研常见考题、习题,题型汇总、知识点总结、专周(二十)