h201.asm

关于8086汇编的一些实验程序

stack segment stack'stack'
      dw 32 dup(?)
stack ends
data segment
W1 DW 0802H
W2 DW 0603H
OBF DB 3 DUP(?)
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 AX,W1
      SUB Al,BYTE PTR W2
      AAS
      OR AL,30H
      MOV OBF+1,AL
      SUB AH,BYTE PTR W2+1
      OR AH,30H
      MOV OBF,AH
      MOV OBF+2,'$'

      MOV DX,OFFSET OBF
      MOV AH,9
      INT 21H
      ret
begin endp
code ends
     end begin