Re: 64-bit

[Vernon Hamberg <vhamberg@xxxxxxxxx>]

I'm wondering, seriously, where do we find the distinction? Single-level
store uses 64-bit addressing, plus some extra bits, right? You discuss this
in your eBook.

But, in a way, EVERYTHING is handled with 16meg segments at the SLIC level.
User spaces, a very handy construct in XPF, can automatically grow to that
limit. Data files are built up from multiple dataspace segments. We don''t
generally have access to assembler - level stuff (except as you describe
using Display/Alter in SST)

I don't think even the 400 is truly segment-free, although Storage
Management hides the details. But the term segment turns up all over in
PEX, with SAR (segment address resolution), etc.

Even teraspace is probably allocated with requests to Storage Management
for contiguous segments.

Anyway...

Back to Hollerith cards, eh?  :-)

At 07:02 PM 3/21/02 -0600, you wrote:
>ahm, it is only ONE terabyte (2^40 bits), 16 million times
>smaller than the 64-bit address. Thus using teraspaces
>is 40-bit computing not 64-bit computing.
>And most AS/400 still don't use any ILE, so I maintain
>that we do not practice 64-bit computing.
>
>----- Original Message -----
>From: Leif Svalgaard <leif@leif.org>
>To: <midrange-l@midrange.com>
>Sent: Thursday, March 21, 2002 6:54 PM
>Subject: Re: 64-bit
>
>
> > what's the limitation of the size of a teraspace.
> >
> > ----- Original Message -----
> > From: Vernon Hamberg <vhamberg@attbi.com>
> > To: <midrange-l@midrange.com>
> > Sent: Thursday, March 21, 2002 6:34 PM
> > Subject: Re: 64-bit
> >
> >
> > > You don't. That's not what it's for. If you need to do that, you create a
> > > C++ module with *TERASPACE turned on, and bind it to the RPG program.
> > >
> >
> >
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