微机原理习题答案(11)

INT 21h POP CX LOOP input

MOV BX,0ffffh MOV CX,20 DEC CX L1: MOV DX,CX L2: INC BX

MOV AL,buf1[BX] CMP AL,buf1[BX+1] JLE cont1

XCHG AL,buf1[BX+1] MOV buf1[BX],AL cont1:LOOP L2

MOV CX,DX MOV BX,0ffffh LOOP L1 ;

LEA DX,buf2 MOV AH,9 INT 21h MOV BX,0 MOV CX,20

output:MOV DL,buf1[BX]