Re: A89: Ram vs. Archive
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Re: A89: Ram vs. Archive
RAM isn't cleared on resets. Neither is FlashROM. TI made it reset the RAM
and FlashROM on resets for security reasons obviously. How would you like
it if virii became widely avaliable in the TI world. Thats what would
happen. TI purposely resets the FAT so that program pointers are broken
and virii wouldn't work. That is also why TI asks that FlashROM progs be
digitally signed. All pointers are cleared on reset as well (interrupts
etc.). This is to my knowledge correct. It also applies for the 86 (the
parts about the RAM).
-}InFuZeD{
-TINews: http://tinews.n3.net
Btw, there is a pretty cool permanant ROM area that is a fail-safe. It is
actually a small thingy that accepts ROMs from the computer. I commend TI
on this great feature =)
On Thu, 7 Oct 1999 ComAsYuAre@aol.com wrote:
>
> In a message dated 10/7/99 13:37:37 Eastern Daylight Time,
> ticalcnews@yahoo.com writes:
>
> > I don't see any reason why TI came up with such thing
> > as Archive memory. It's basically just RAM. If it
> > was something different than RAM then when you reset
> > your calculator, only RAM should have reset and
> > everything on archive memory should still be there.
> > before i had 89, i thought archive memory was just
> > like harddrive on computer. instead of say archive
> > memory, they could have just said "over 500k of RAM".
> >
>
> Dude, it's NOT ram. There is a physical difference--ram isn't just something
> that's cleared on a reset. And the fact of the matter is the archive isn't
> cleared during a reset, it's just that the the vat is in ram, so it loses
> track of what's in the archive. That's why archive utility can save data.
>
> ----
> Jonah Cohen
> <ComAsYuAre@aol.com>
> http://linux.hypnotic.org/~jonah/
>
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