PIC P16F690;

pragma adc right_justify = 0;

Main {
    digital_output PORTC; # all pins
    analog_input RA3;
    adc_enable 500kHz, AN0;
    $display = 0x08; # create a 8-bit register
    Loop {
        write PORTC, $display;
        adc_read $userval;
        $userval += 100;
        delay_ms $userval;
        ror $display, 1;
    }
}

Simulator {
    attach_led PORTC, 4, 'red';
    #adc stimulus
    stimulate AN0, every 3s, wave [
        500000, 2.85, 1000000, 3.6,
        1500000, 4.5, 2000000, 3.2,
        2500000, 1.8
    ];
    scope AN0;
    log AN0;
    stop_after 10s;
}