CountMatch proc
push ebp
mov ebp, esp
push esi
push edi
mov ecx, [ebp + 12]; length of arrays
mov esi, [ebp + 20]; address of array1
mov edi, [ebp + 16]; address of array2

CHKMATCH :
mov eax, [esi]
sub eax, [edi]
jns ELSEloop    ;this line is problem
neg eax
cmp eax,5
ja CONTINUE
inc count
jmp CONTINUE
ELSEloop:
cmp eax,5
ja CONTINUE
inc count

CONTINUE :
add esi, 4
add edi, 4
loop CHKMATCH

mov eax, count
call writeint
call crlf
pop edi
pop esi
pop ebp
ret 16
CountMatch endp