ASM Compare 2 Numbers - numbers

Question

My task is to compare two numbers in ASM. I input the first number (binary) and the second (binary). I must compare Z1 and Z2. If Z1>=Z2, show TRUE, else show FALSE
dane segment
txt1 db 'First number: $'
txt2 db 'Secend number: $'
z1 dw 0
z2 dw 0
prawda db 'True!$'
falsz db 'False!$'
dane ends
sts segment stack
db 256 dup(?)
sts ends
program segment
assume cs:program, ss:sts, ds:dane
start:
mov ax, seg dane
mov ds,ax
mov dx, offset txt1
mov ah, 9
int 21h
mov cx, 16
mov bx, offset z1
petla1:
mov ah, 1
int 21h
mov [bx], al
inc bx
loop petla1
mov cx, 16
mov ax, 0
mov bx, offset z1
petla2:
shl ax, 1
mov dl, [bx]
cmp dl, 31h
jne dal1
add ax, 1
dal1:
inc bx
loop petla2
mov dx, offset txt2
mov ah, 9
int 21h
mov cx, 16
mov bx, offset z1
petla3:
mov ah, 1
int 21h
mov [bx], al
inc bx
loop petla3
mov cx, 16
mov ax, 0
mov bx, offset z1
petla4:
shl ax, 1
mov dl, [bx]
cmp dl, 31h
jne dal2
add ax, 1
dal2:
inc bx
loop petla4
;JGE, >= JNL not <
mov ax, [z1]
mov bx, [z2]
cmp ax,bx
jge ety
mov ah, 9
mov dx, offset falsz
int 21h
jae koniec
ety:
mov ah,9
mov dx, offset prawda
int 21h
koniec:
mov ah, 4ch
int 21h
program ends
end start
What I do wrong? It's my first assembler project

Answer 1

mov cx, 16
mov bx, offset z1
petla1:
mov ah, 1
int 21h
mov [bx], al
inc bx
loop petla1
You didn't reserve the necessary memory for this operation! Z1 is defined as a word (2 bytes) and you are writing 16 bytes in this loop.
If you want to keep the basic structure of your program add the definition of a 16 byte buffer to recieve the binary representation of the number.
Buffer db 16 dup(0)
mov cx, 16
mov bx, offset Buffer
petla1:
mov ah, 1
int 21h
mov [bx], al
inc bx
loop petla1
mov cx, 16
mov ax, 0
mov bx, offset Buffer
petla2:
shl ax, 1
mov dl, [bx]
cmp dl, 31h
jne dal1
add ax, 1
dal1:
inc bx
loop petla2
mov [z1], ax
Do it similarly for the second number using the same Buffer but storing AX in z2.
Please note that the jae koniec should be an unconditional jump. jmp koniec