Re: A89: Flash ROM-Archive command
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Re: A89: Flash ROM-Archive command
In a message dated 10/10/98 22:35:21 Eastern Daylight Time, miken@dodgenet.com
writes:
> At 02:54 AM 10/9/98 EDT, you wrote:
> >
> >> Recently I e-mailed TI asking them about the fact that since the archive
> is
> >a
> >> Flash eeprom chip, if the possibility of simply archiving a variable
over
>
> >> and
> >> over again would possibly burn out the archive, and their response was
> quite
> >> interesting, it doesn't. No singel archive and unarchive will burn out
> the
> >> chip, instead, the chip has been redesigned to only "gain" age whenever
a
> >> "garbage collection" takes place. So basically, you'd not only have
> archive
> >> a
> >> variable enough times to make the calc preform a garbage collection,
then
> >> you'd have to do it again, and again, etc. Basically you'd have to
> perfrom
> >> about 10,000 garbage collections, not simply 10,000 archives/unarchives.
> >
> >This is logical. The ROM will gain age when a variable is archived for
the
> >first time, but it's not removed from the archive until it is unarchived,
> and
> >another variable is archived for the first time or a garbage collection is
> >run.
> >Therefore, those are the only two times the ROM ages.
> >1. When a variable is archived for the first time.
> >2. When a garbage collection is run.
> >
> What is a garbage collection?
garbage collection occurs when a bunch of archived files have been marked for
deletion, and you try to archive more variables than there is space left in
the flash rom for. the ti-89 removes all the old files, and then adds the new
ones. this way, it doesn't get "aged" every time you unarchive a file