On Sat, 4 Jul 2020 15:11:54 -0500, Nguyen Dt wrote:

>I tried the option NOALIGN when assembling , and it is OK now.
>
>So it means that i should examine my  assembling listing to check if variables 
>are not separated by some bytes for the alignement ? 
>When i put all the variable to Character type i don't have any aligment ...
>In my case i see the problem because the output is not as expected , but i 
>guess that it can source of errors. 
> 
An explicit length indicator suppresses alignment, so you might
keep the intended use of fields clearee by using, e.g.:
         DS    FL4  (unaligned fullword)
rather than:
         DS    CL4  (used as if fullword)

But beware of "0" repition factor:
         DS    0F   Aligned!  IIRC
         DS    0C   Unaligned.
         DS    FL0  ???
-- gil

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