Re: Learning Ada-What does this mean.

[vashwath@rediffmail.com (prashna)]

> If a "storage element" on the target machine is 32 bits wide, then the
Thanks tmoran, thank u very much.
> first one will hold INT_1 and the second INT_2.  Is a storage element on
> AIX 32 bits wide?  On a PC a "storage element" is an 8 bit byte, so INT_1
> occupies the first 4 bytes.  INT_2 starts at the second byte, ie, 1/4 of
> the way into INT_1, and takes the next 4 bytes.  So INT_1 and INT_2
> overlap on a PC.  This is illegal, and the Gnat compilation error message
> ought to be telling you that.
u r right tmoran and This was the error message that gnat was giving,
"component "DATE_32" overlaps "WORD"".
Sorry for not posting this(error message) in my original post.
One more help tmoran,How do we now what is the size of the storage
element?

> For the PC you probably want instead
>   for T_MEM_IO use
>      record
>         INT_1 at 0 range 0..31;
>         INT_2 at 4 range 0..31;
>      end record;
> so INT_2 starts right after INT_1.
> The name "T_MEM_IO" suggests this record might indeed be something used
> by a hardware device - is that going to work the same on the PC as the AIX?

I have no Idea of what This record does coz I have just entered in to
this software field and I am doing code walk through and I came across
this piece of code.

Thanks for all those who have replied.