文件尾:
V SI,BX

        RET

CHKKEY ENDP

DELAY PROC NEAR

        PUSH CX

        MOV CX,0AH

        SUB CL,DELAYTIME

  LOOP1:PUSH CX

        MOV CX,03FFH

  LOOP2:NOP

        LOOP LOOP2

        POP CX

        LOOP LOOP1

        POP CX

        RET

DELAY ENDP

DISPLAY PROC NEAR

        PUSH BX

        MOV DX,D8279

        MOV AL,DELAYTIME

        LEA BX,LED

        XLAT

        OUT DX,AL

        MOV AL,DIRDSP

        OUT DX,AL

        MOV CX,0006H

        LEA BX,DSP

  LOOP4:MOV AL,[BX]

        OUT DX,AL

        INC BX

        LOOP LOOP4

        MOV DX,C8279

        MOV AL,0C2H

        OUT DX,AL

        POP BX

        RET

DISPLAY ENDP

   QUIT:MOV DX,C8279

        MOV AL,0D2H

        OUT DX,AL

        jmp $

   LED DB 3FH,06H,5BH,4FH,66H

       DB 6DH,7DH,07H,7FH,6FH

   DSP DB 5EH,79H,79H,73H,6DH,0EDH

   DELAYTIME DB 01H

   STEP DB 04H,05H,01H,09H,08H

        DB 0AH,02H,06H,02H,0AH

        DB 08H,09H,01H,05H,04H

   DIRDSP DB 40H

CODE ENDS

END START