problem with i/o pic16F876

[mikmac]

HI,
I'm in troubles here. I have programmed an pic16F876 to blink an LED.
I tried many ways to do it but the LED just blink a few times.
I don't know why. I tried to do this with proteus and just work fine but
in practice it didn't work.

In same way, I tried with pic16F627 and it worked fine, I don't understand
the difference for the two devices. Maybe in I/O hardware, I saw a few
differences in datasheet, but how can I do it?

Image from proteus : circuit_Proteus.jpg

I'm using CCS C with MPLAB 8.43


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C code

#include <16F876.h>
#FUSES XT,NOWDT,NOPROTECT,NOBROWNOUT,NOPUT
#use delay(clock=4000000)

void main()
{

SET_TRIS_B(0x00);

for( ; ; ){
OUTPUT_B(0x01);
delay_ms(500);
OUTPUT_B(0x00);
delay_ms(500);}
}

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hex code

:1000000000308A0019280000223084008313000881
:10001000031918280130F800F701F70B0D28F80B29
:100020000C284A30F700F70B13281628800B0A28F3
:100030000034840183131F30830583161F149F141B
:100040001F159F1100308600860101308312860043
:100050000230A100FA30A2000420A10B2A28831646
:100060008601831286010230A100FA30A20004202A
:0A007000A10B352883162428630035
:02400E00393F38
:00000001FF
;PIC16F876


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I already tried pullups, didn't work

Could anyone give me some help, please!