t2.asm

关于8086的一些编程

stack segment stack'stack'
      dw 32 dup(?)
stack ends
data segment
OBF DB '>',0DH,0AH,'$'
IBF DB 255,0,255 DUP(?)
data ends
code segment
begin proc far
assume ss:stack,cs:code,ds:data
push ds
sub ax,ax
push ax
mov ax,data
mov ds,ax
MOV ES,AX
MOV AH,9
MOV DX,OFFSET OBF
INT 21H
MOV AH,10
MOV DX,OFFSET IBF
INT 21H
MOV AL,0DH
MOV CX,255
MOV DI,OFFSET IBF+2
CLD
REPNZ SCASB
DEC DI
MOV BYTE PTR [DI],'$'
MOV AH,2
MOV DL,0AH
INT 21H
MOV DX,OFFSET IBF+2
MOV AH,9
INT 21H
ret
begin endp
code ends
end begin