Port B của pic 16f887 cần giúp đỡ

[xuantd2010]

Các bạn cho mình hỏi mình có đoạn code như sau test trên proteus chạy tốt nhưng tại sao khi chạy mạch thật thì không được.

#include <16F887.h>
#device adc=8

#FUSES NOWDT //No Watch Dog Timer
#FUSES XT //High speed Osc (> 4mhz for PCM/PCH) (>10mhz for PCD)
#FUSES NOPUT //No Power Up Timer
#FUSES MCLR //Master Clear pin enabled
#FUSES NOPROTECT //Code not protected from reading
#FUSES NOCPD //No EE protection
#FUSES BROWNOUT //Reset when brownout detected
#FUSES IESO //Internal External Switch Over mode enabled
#FUSES FCMEN //Fail-safe clock monitor enabled
#FUSES LVP //Low Voltage Programming on B3(PIC16) or B5(PIC18)
#FUSES NODEBUG //No Debug mode for ICD
#FUSES NOWRT //Program memory not write protected
#FUSES BORV40 //Brownout reset at 4.0V
//#fuses NOWDT,PUT,HS,NOPROTECT

#use fast_io(b)
#use delay(clock=4000000)
//#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bi ts=8)
#byte ANSELH=0x189
#byte ANSEL=0x188
#byte WPUB=0x95
void main()
{

setup_adc_ports(NO_ANALOGS|VSS_VDD);
setup_adc(ADC_OFF);
setup_spi(SPI_SS_DISABLED);
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
setup_comparator(NC_NC_NC_NC);// This device COMP currently not supported by the PICWizard
//Setup_Oscillator parameter not selected from Intr Oscillator Config tab

// TODO: USER CODE!!
ANSEL=0;
ANSELH=0;
WPUB=0;
set_tris_b(0);
while(true)
{
output_b(255);//portb=255
delay_ms(900);
output_b(0);
delay_ms(900);
}

}
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