Can someone please explain this code? What is happening here, each line by line?

This code is in assembly language.

Code:

.stack 100h

.data

n db '?' msg1 db 10,13,"Enter the range : $" msg2 db 10,13, "The even numbers are $" value db 0 total db 0

.code begin: MOV AX, @data MOV DS, AX LEA DX, msg1 MOV AH, 09h INT 21H read: ;to read digits more than 1 MOV AH, 01 INT 21H CMP AL, 13 JE message MOV value, AL SUB value, 30h MOV AL, total MOV BL, 10 MUL BL ADD AL, value MOV total, AL JMP read MOV AL, total MOV n , AL message: LEA DX, msg2 MOV AH, 09h INT 21H ;initialising variables MOV CL, 0 MOV BL, 0 even: MOV AL, BL AAM ADD AX, 3030h MOV BX, AX MOV AH, 2 MOV DL, BH INT 21H MOV AH,2 MOV DL, BL INT 21H ADD BL, 2 MOV DL, ' ' INT 21H INC CL CMP CL, n JNE even MOV AH, 4CH INT 21H end begin