我正在使用PIC18F4580模块，我想模拟我在Proteus中的MPLAB上编写的LED，但我一直得到以下信息：

[PIC18 STACK] PC=0x000E. Stack overflow is forcing device reset. [U1]

我在MPLAB上的代码：

;Complete the schematic below showing how to connect on a PIC:
;(a) a pushbutton PB to RD4, so that the RD4=0 (LOW) when the pushbutton is pressed,
;and 1 (HIGH) when the pushbutton is released,
;(b) a LED1 to RC1, so that the LED1 is ON when RC1=0 (LOW) and OFF when RC1=1
;(HIGH),
;(c) a LED2 to RC2, so that the LED2 is ON when RC2=1 (HIGH) and OFF when RC2=0
;(LOW).
;Assume that bit RD4 is an input and represents the condition of a door alarm.
   ; If it goes LOW, it
;means that the door is open
   ;Monitor the pushbutton continuously. Whenever it goes LOW, 
  ; send a HIGH-to-LOW pulse
;eighty times to the LED1, then turn off LED1 and turn on LED2. Otherwise, turn on this LED1
;and turn off LED2.

   PORTD EQU 0xF83
   PORTC EQU 0xF82
   TRISC EQU 0xF94
   TRISD EQU 0xF95
   Counter EQU 0x20
 ;LED 1 > RC1 ON: 0 OFF: 1
 ;LED 2 > RC2 ON: 1 OFF: 0
 
   BSF TRISD, 4
   BCF TRISC, 1
   BCF TRISC, 2
   
   LoopPB1:
    MOVLW D'80'
    MOVWF Counter
    Call PB1
    DECFSZ Counter
    Call LoopPB1
    BSF PORTC, 1
    BSF PORTC, 2
    return
   
   PB1:
    BCF PORTC, 1 ;S
    BCF PORTC, 1
    return
   
   BTFSS PORTD, 4
   BCF PORTC,1
   BRA PB1
   RETURN
   
    END

Proteus示意图：schematic
这是我第一次使用MPLAB和Proteus。
编辑：我的代码现在打开LED在任何时候，直到按下按钮，它关闭它，但我没有看到80高到低调用LED1，也，LED2似乎没有打开任何。
更新的代码：

ORG 0
    
    
;Complete the schematic below showing how to connect on a PIC:
;(a) a pushbutton PB to RD4, so that the RD4=0 (LOW) when the pushbutton is pressed,
;and 1 (HIGH) when the pushbutton is released,
;(b) a LED1 to RC1, so that the LED1 is ON when RC1=0 (LOW) and OFF when RC1=1
;(HIGH),
;(c) a LED2 to RC2, so that the LED2 is ON when RC2=1 (HIGH) and OFF when RC2=0
;(LOW).
;Assume that bit RD4 is an input and represents the condition of a door alarm.
   ; If it goes LOW, it
;means that the door is open
   ;Monitor the pushbutton continuously. Whenever it goes LOW, 
  ; send a HIGH-to-LOW pulse
;eighty times to the LED1, then turn off LED1 and turn on LED2. Otherwise, turn on this LED1
;and turn off LED2.

   PORTD EQU 0xF83
   PORTC EQU 0xF82
   TRISC EQU 0xF94
   TRISD EQU 0xF95
   Counter EQU 0x20
 ;LED 1 > RC1 ON: 0 OFF: 1
 ;LED 2 > RC2 ON: 1 OFF: 0
 
   BSF TRISD, 4
   BCF TRISC, 1
   BCF TRISC, 2
   
      ;Monitor the pushbutton continuously. Whenever it goes LOW, 
  ; send a HIGH-to-LOW pulse
;eighty times to the LED1, then turn off LED1 and turn on LED2. Otherwise, turn on this LED1
;and turn off LED2.
   MOVLW D'80'
   MOVWF Counter
   
   
   
   LoopPB1:
    MOVLW D'80'
    MOVWF Counter
    Loopn:
    BSF PORTC, 1 ;S
    BCF PORTC, 1
    DECFSZ Counter, F
    BRA Loopn
    BSF PORTC, 2
    BSF PORTC, 1
    BRA Check
    
   
   
   Check:
   BTFSS PORTD, 4
   BRA Check
   BRA LoopPB1
    
    END

更新示意图：enter image description here