const char led[6] = { 1, 2, 4, 8, 16, 32 };

void delay( void )
{
    char i = 0, j;
    while( i++ < 150 )
    {
        j = 0;
        while( j++ < 200 )
        {
            nop();
        }
    }
}

main()
{
    disable_interrupt( GIE );
    set_bit( STATUS, RP0 );
    set_tris_b( 0 );
    clear_bit( STATUS, RP0 );

    char i = 0;
    while( 1 )
    {
        output_port_b( led[i++] );
        if( i > 5 ) i = 0;

        delay();
    }
}