t3.asm

关于8086的一些编程

stack segment stack'stack'
      dw 32 dup(?)
stack ends
data segment
IBF DB 5,?,5 DUP(?)
SW DW ?
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 AH,10
MOV DX,OFFSET IBF
INT 21H
MOV AX,WORD PTR IBF+4;AX=3433H
MOV BL,OFFSET IBF+4
AND AX,0F0FH
MOV CL,4
SHL AL,CL
OR AL,AH
MOV BYTE PTR SW,AL
MOV AX,WORD PTR IBF+2;AX=3231H
MOV BL,OFFSET IBF+2
AND AX,0F0FH
SHL AL,CL
OR AL,AH
MOV BYTE PTR SW+1,AL
MOV BX,SW
ret
begin endp
code ends
end begin