大会鸸鹋8086输入点击特定的按钮2040

Question

这是我的代码：

DSEG SEGMENT 'DATA' 

; add DATA 

DSEG ENDS 

SSEG SEGMENT STACK 'STACK' 
     DW  100h DUP(?) 
SSEG ENDS 

CSEG SEGMENT 'CODE' 

;******************************************* 

START PROC FAR 

; Store return address to OS: 
    PUSH DS 
    MOV  AX, 0 
    PUSH AX 

; set segment registers: 
    MOV  AX, DSEG 
    MOV  DS, AX 
    MOV  ES, AX 

; initialization 
    MOV DX, 2040h 
    MOV AL, 00h 
    OUT DX, AL 
    MOV DX, 2080h 
    OUT DX, AL 

NEXT: 
    MOV DX, 2080h ; input data entrada dos buttons 
    IN AX, DX ; 16-bit input 

    MOV DX, 2040h ; output data/saida para ASCII LCD display 
    OUT DX, AL 

    JMP NEXT ; infinit loop 


; return to operating system: 
    RET 
START ENDP 

;******************************************* 

CSEG ENDS 

     END START ; set entry point. 

我想，当按下button 1中挑选一个动作，就像到另一个过程的调用。

Answer 1

我找到了自己的问题的解决方案。我使用的代码如下：

DSEG SEGMENT 'DATA' 

msg1: db  "PLAY!", 0Dh,0Ah, 24h 
msg2: db  "PAUSE!", 0Dh,0Ah, 24h 
msg3: db  "STOP!", 0Dh,0Ah, 24h 
msg4: db  "UP!", 0Dh,0Ah, 24h 
msg5: db  "DOWN!", 0Dh,0Ah, 24h 

DSEG ENDS 

SSEG SEGMENT STACK 'STACK' 
     DW  100h DUP(?) 
SSEG ENDS 

CSEG SEGMENT 'CODE' 

;******************************************* 

START PROC FAR 

; Store return address to OS: 
    PUSH DS 
    MOV  AX, 0 
    PUSH AX 

; set segment registers: 
    MOV  AX, DSEG 
    MOV  DS, AX 
    MOV  ES, AX 

; initialization 
    MOV DX, 2040h 
    MOV AL, 00h 
    OUT DX, AL 
    MOV DX, 2080h 
    OUT DX, AL 

NEXT: 
    MOV DX, 2080h ; input data entrada dos buttons 
    IN AX, DX ; 16-bit input 

    CMP AL,02 
    JE PLAY 

    CMP AL,02 
    JE PAUSE 

    CMP AL,04 
    JE STOP 

    CMP AL,01 
    JE UP 

    CMP AH,01 
    JE DOWN 


    MOV DX, 2040h ; output data/saida para ASCII LCD display 
    OUT DX, AL 

    JMP NEXT ; infinit loop 


; return to operating system: 
    RET 
START ENDP 



PLAY PROC 

     mov  dx, msg1 ; load offset of msg into dx. 
     mov  ah, 09h ; print function is 9. 
     int  21h  ; do it! 

     mov  ah, 0 
     int  16h  ; wait for any key.... 
    RET   
PLAY ENDP 

PAUSE PROC 

     mov  dx, msg2 ; load offset of msg into dx. 
     mov  ah, 09h ; print function is 9. 
     int  21h  ; do it! 

     mov  ah, 0 
     int  16h  ; wait for any key.... 
    RET   
PAUSE ENDP 

STOP PROC 

     mov  dx, msg3 ; load offset of msg into dx. 
     mov  ah, 09h ; print function is 9. 
     int  21h  ; do it! 

     mov  ah, 0 
     int  16h  ; wait for any key.... 
    RET   
STOP ENDP 

UP PROC 

     mov  dx, msg4 ; load offset of msg into dx. 
     mov  ah, 09h ; print function is 9. 
     int  21h  ; do it! 

     mov  ah, 0 
     int  16h  ; wait for any key.... 
    RET   
UP ENDP 

DOWN PROC 

     mov  dx, msg5 ; load offset of msg into dx. 
     mov  ah, 09h ; print function is 9. 
     int  21h  ; do it! 

     mov  ah, 0 
     int  16h  ; wait for any key.... 
    RET   
DOWN ENDP 


;******************************************* 

CSEG ENDS 

     END START ; set entry point.