我一直在尝试让K_100MS子程序用于PIC16F84微控制器的简单LED点亮程序。以下代码构建正常，但在Proteus ISIS中模拟它时延迟没有实现。有人能告诉我我做错了吗？
list p=16f84 ; list directive to define processor
#include <p16F84.inc> ; processor specific variable definitions
errorlevel -302 , -207 ; suppress message 302 from list file
__config _XT_OSC & _CP_OFF & _PWRTE_OFF & _WDT_OFF
ORG 0x00 ; processor reset vector
goto start ; go to beginning of program
COUNT_H equ 30h ; 2-byte counter
COUNT_L equ 31h ; at File 20:1h
K equ 32h ; Temporary storage for K
N equ d'130'
DELAY_K100MS
movwf K ; Put K away in a register file
; Task 1: DO 100ms delay
movlw N ; Set up high count to 130
movwf COUNT_H
clrf COUNT_L ; and low count to 256
DK_LOOP
decfsz COUNT_L,f ; Decrement LS count to zero
goto DK_LOOP ; taking in all H*[(256*3)-1]˜
decfsz COUNT_H,f ; Repeat for the MS byte
goto DK_LOOP ; taking in all (H*3)-1˜
; Task 2: Decrement K
decfsz K,f
; Task 3: WHILE K > 0
goto DK_LOOP ; REPEAT WHILE K > 0
FINI return
PORTB EQU H'0006'
TRISB EQU H'0086'
STATUS EQU H'0003'
RP0 EQU H'0005'
start:
bsf STATUS, RP0
clrf TRISB
bcf STATUS, RP0
movlw b'01111110'
movwf PORTB
movlw d'10' ; 10 x 0.1s gives one second
call DELAY_K100MS
clrf PORTB
end