hello,
lets assume that we have defined tr:

tr db "96"

The stack method works fine.
The register method fails.

Thanks for help
Paul


_test:



;stack method
mov dx,[tr]
xchg dh,dl
mov edi,0x0a0d00
push edi
push dx
mov ecx,esp ;buffer
mov edx,5 ;length of buffer
mov eax,4 ;sys_write
mov ebx,1 ;file descriptor
int 0x80

;outputs '69' with a \n

;register method
mov dx,[tr]
mov ecx,edx ;buffer
mov edx,2 ;length of buffer
mov eax,4 ;sys_write
mov ebx,1 ;file descriptor
int 0x80

mov edi,0x0a0d00
mov ecx,edx ;buffer
mov edx,3 ;length of buffer
mov eax,4 ;sys_write
mov ebx,1 ;file descriptor
int 0x80


exit:

mov ebx,eax
mov eax,1
int 0x80

You should do:

instead of: