chp3_8.asm

关于8086汇编的一些作业程序

stack segment stack'stack'
      dw 32 dup(?)
stack ends
data segment
BVAR DB 0E5H
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 AL,BVAR
      MOV DI,2
      MOV OBF[DI+1],'$'
AGAIN:AAM
      OR AL,30H
      MOV OBF[DI],AL
      DEC DI
      MOV AL,AH
      AND AH,AH
      JNZ AGAIN
      MOV DX,OFFSET OBF
      MOV AH,9
      INT 21H
      ret
begin endp
code ends
     end begin