求用匯編語言編寫9-0倒計時

CODE?SEGMENT

ASSUMECS:CODE

ORG100H

START:?PUSH?CS

POPDS

PUSH?CS

POPES

MOVCX,10

MOVDL,'9'

@00:

MOVAH,2

INT21H

CALL?DELAY1

DECDL

LOOP?@00

MOVAH,9

LEADX,MSG

INT21H

MOVAH,4CH

INT21H

MSG?DB13,10,'the?time?is?over?!$'

DELAY1?PROC?NEAR

PUSH?AX

PUSH?CX

PUSH?DX

PUSH?SI

PUSH?DI

PUSHF

MOVAH,0

INT1AH

MOVSI,CX

MOVDI,DX

@DELAY:

MOVAH,0

INT1AH

SUBDX,DI

SBBCX,SI

CMPDX,18

JB@DELAY

POPF

POPDI

POPSI

POPDX

POPCX

POPAX

RET

DELAY1?ENDP

CODE?ENDS

ENDSTART

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