16F88 PORTA failed to give output

[lipschutz]

Dear All,
I am failed to find any output at PORTA. Therefore i wrote the code as basic input output test. And run on MPLAB 8 Simulatore. But no result failed again and again. Please find the code below and help me to know the solution:

;Test Output at PORTA
;
 processor 16F88
 include<p16f88.inc>
 __CONFIG _CONFIG1, _CP_OFF & _CCP1_RB0 & _DEBUG_OFF & _WRT_PROTECT_OFF & _CPD_OFF & _LVP_OFF & _BODEN_OFF & _MCLR_ON & _PWRTE_ON & _WDT_OFF & _INTRC_IO
 __CONFIG _CONFIG2,_IESO_OFF & _FCMEN_OFF
;=============================================================================
;BIT DEFINITION
RA0        EQU      0H
RA1        EQU      1H
RA2        EQU      2H
;
;
                       ORG         0H
                   BANKSEL         OSCCON      ;
                   CLRF            OSCTUNE     ;
                   CLRF            OSCCON      ;
                   MOVLW           B'00001110' ;
                   MOVWF           OSCCON      ;
;++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                   BANKSEL         PORTA       ;
                   MOVLW           B'000100000';
                   TRIS            PORTA       ;
;*************************************************************************
                   CLRF            PORTA       ;
HERE               BSF             PORTA,0H    ;
                   BSF             PORTA,1H    ;
                   BSF             PORTA,2H    ;
                   BCF             PORTA,0H    ;
                   BCF             PORTA,1H    ;
                   BCF             PORTA,2H    ;
                   GOTO            HERE        ;
                   END

 

[Pommie]

You need to turn off the analogue feature of the port pins. Set ansel and anselh to zero.

Mike.

 

[lipschutz]

yeah, that solves the problem instantly.
thanks.

-lipschutz