I want to know what the code is talking about.

I want to know what each command mean..thank you

LIST P=16F1937

#include "p16F1937.inc"

; CONFIG1

; __config 0xFFE7

__CONFIG _CONFIG1, _FOSC_ECH & _WDTE_OFF & _PWRTE_OFF & _MCLRE_ON & _CP_OFF & _CPD_OFF & _BOREN_ON & _CLKOUTEN_OFF & _IESO_ON & _FCMEN_ON

; CONFIG2

; __config 0xFFFF

__CONFIG _CONFIG2, _WRT_OFF & _VCAPEN_OFF & _PLLEN_ON & _STVREN_ON & _BORV_LO & _LVP_ON

COUNT1 equ 20h

COUNT2 equ 21h

COUNT3 equ 22h

org 0

movlw 0h

movwf COUNT3

Start:

banksel PORTB

clrf PORTB

banksel ANSELB

clrf ANSELB ;Set PORTA, Digital I/O

banksel TRISB

movlw B'00000000'

movwf TRISB ;Set PORTA, All Bits as Output

banksel PORTB

incf COUNT3, 1

MOVFW COUNT3

MOVWF PORTB

; delay

MOVLW 0x22

MOVWF COUNT1

MOVWF COUNT2

LOOP1 DECFSZ COUNT1, 1

GOTO LOOP1

DECFSZ COUNT2, 1

GOTO LOOP1

GOTO Start

end