t10.asm

来自「关于8086汇编程序的编写」· 汇编 代码 · 共 33 行

stack segment stack'stack'
      dw 32 dup(?)
stack ends
data segment
data ends
code segment
begin proc far
assume ss:stack,cs:code,ds:data
push ds
sub ax,ax
push ax
mov ax,data
mov ds,ax
MOV DX,0B804H
NEXT:OUT DX,AL
INC AL
CMP AL,0FFH
JNE NEXT
NEXT1:OUT DX,AL
DEC AL
CMP AL,0
JNE NEXT1
PUSH AX
MOV AH,11
INT 21H
CMP AL,0
POP AX
JZ NEXT
ret
begin endp
code ends
end begin