8086CPU红绿灯程序仿真出现了问题哪位大佬帮我看一下 -

标题: 8086CPU红绿灯程序仿真出现了问题哪位大佬帮我看一下 [打印本页]

作者: QWE强盗 时间: 2020-12-3 20:36
标题: 8086CPU红绿灯程序仿真出现了问题哪位大佬帮我看一下
仿真出现了问题，还没有找到原因，望大佬解惑

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作者: QWE强盗 时间: 2020-12-3 20:39

; You may customize this and other start-up templates;
; The location of this template is c:\emu8086\inc\0_com_template.txt

org 100h

DATA SEGMENT
   PORTA EQU 218H
   PORTB EQU 219H
   PORTC EQU 21AH
   PTCON8255 EQU 21BH
   PORT0 EQU 238H
   PORT1 EQU 239H
   PORT2 EQU 240H
   PTCON8253 EQU 241H

DATA ENDS
CODE SEGMENT
   ASSUME DS:DATA,CS:CODE
INIT: MOV AX,DATA
      MOV DS,AX
      MOV DX,PTCON8253
      MOV AL,36H
      OUT DX,AL
      MOV DX,PORT0
      MOV AX,2710H
      OUT DX,AL
      MOV DX,0AH
      OUT DX,AL
      MOV DX,PTCON8253
      MOV AL,71H
      OUT DX,AL
      MOV DX,PTCON8253
      MOV AL,96H
      OUT DX,AL
      MOV DX,PORT2
      MOV AL,64H
      OUT DX,AL
      MOV DX,PTCON8255
      MOV AL,80H
      OUT DX,AL
      MOV DX,PORTA
      MOV AL,0
      OUT DX,AL
      MOV DX,PORTB
      MOV AL,0FH
      OUT DX,AL
      MOV DX,PORTC
      MOV AL,0FH
      OUT DX,AL
STA: MOV DX,PORTA
      MOV AL,0A0H
      OUT DX,AL
      MOV DX,PORTB
      MOV AL,0F0H
      OUT DX,AL
      MOV DX,PORTC
      MOV AL,50H
      OUT DX,AL
      MOV DX,PORT1
      MOV AX,0BB8H
      OUT DX,AL
      MOV AL,AH
      OUT DX,AL
      SCAN1:MOV AL,0
            MOV DX,PTCON8255
            MOV AL,90H
            OUT DX,AL
            MOV DX,PORTA
            IN  AL,DX
            AND AL,0FH
            CMP AL,1
            JNZ SCAN1
      FLA1:MOV DX,PTCON8255
            MOV AL,80H
            OUT DX,AL
            MOV DX,PORTC
            MOV AL,0F0H
            OUT DX,AL
            MOV DX,PORTB
            MOV AL,50H
            OUT DX,AL
            MOV CX,0
      TEST1:MOV DX,PTCON8255
            MOV AL,82H
            OUT DX,AL
            MOV DX,PORTB
            IN  AL,DX
            AND AL,0FH
            MOV AH,AL
            MOV DX,PTCON8255
            MOV AL,82H
            OUT DX,AL
            MOV DX,PORTB
            IN  AL,DX
            AND AL,0FH
            XOR AL,AH
            ADD CL,AL
            CMP CL,9
            JNZ TEST1
            MOV DX,PTCON8255
            MOV AL,80H
            OUT DX,AL
            MOV DX,PORTA
            MOV AL,50H
            OUT DX,AL
            MOV DX,PORTB
            MOV AL,0F0H
            OUT DX,AL
            MOV DX,PORTC
            MOV AL,0A0H
            MOV DX,PORT1
            MOV AX,0BB8H
            OUT DX,AL
            MOV AL,AH
            OUT DX,AL
      SCAN2:MOV AL,0
            MOV DX,PTCON8255
            MOV AL,90H
            OUT DX,AL
            MOV DX,PORTA
            IN  AL,DX
            AND AL,0FH
            CMP AL,1
            JNZ SCAN2
      FLA2:MOV DX,PTCON8255
            MOV AL,80H
            OUT DX,AL
            MOV DX,PORTC
            MOV AL,0F0H
            OUT DX,AL
            MOV DX,PORTB
            MOV AL,0A0H
            OUT DX,AL
      TEST2:MOV DX,PTCON8255
            MOV AL,88H
            OUT DX,AL
            MOV DX,PORTC
            IN  AL,DX
            AND AL,0FH
            MOV AH,AL
            MOV DX,PTCON8255
            MOV AL,88H
            OUT DX,AL
            MOV DX,PORTC
            IN  AL,DX
            AND AL,0FH
            XOR AL,AH
            ADD CL,AL
            CMP CL,9
            JNZ TEST2
      CODE ENDS
            END STA



ret

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