displays: resb 4

display:  db  00111111b,  00000110b,  01011011b,  01001111b,  01100110b, 01101101b, 01111101b, 00000111b, 01111111b, 01100111b

xor eax, eax
mov al, [0x2]
mov bl, [0x0]

mov ecx, -1
ciclo1:
inc ecx
cmp [ecx+display], al
jne ciclo1

mov eax, ecx

mov ecx, -1
ciclo2:
inc ecx
cmp [ecx+display], bl
jne ciclo2

mov ebx,ecx

test [0x1], 01000000b
jz soma

neg ebx

soma:
add eax, ebx


cmp eax, 9
jg doubledigit

cmp eax, 0
jl negative

mov bl,[eax+display]
mov [0x0], bl
mov [0x1], 00111111b
mov [0x3], 01110011b

jmp fim

negative:
neg eax
mov bl,[eax+display]
mov [0x0], bl
mov [0x1], 00111111b
mov [0x3], 1010100b

jmp fim

doubledigit:
add eax, -10
mov bl,[eax+display]
mov [0x0], bl
mov [0x1], 1
mov [0x3], 01110011b

fim:
ret