Re: A89: Backups

To: assembly-89@lists.ticalc.org
Subject: Re: A89: Backups
From: Olle Hedman <oh@hem.passagen.se>
Date: Thu, 17 Dec 1998 00:31:27 +0100
Delivered-To: assembly-89-outgoing@towerguard.unix.edu.sollentuna.se
References: <b29772d2.36783c73@aol.com>
Reply-To: assembly-89@lists.ticalc.org


A flashrom is fully cabable of keeping itself in order without any power..
it works similary to an eeprom..  that with loosing the address of what is
stored, is only in the Archive..  do not mix thoose together..
but this does not mean that you couldn't be right about the first part..

//Olle

Mrosst92@aol.com wrote:
> 
> If I recall correctly the 89 has a full version of the 1.00 system version in
> a regular ROM chip(1Mb chip I think).  The first time it is turned on after
> losing power (or crashing and rebooting) the system is loaded in to the Flash
> ROM.  I can't easily see how you could keep the calculator working properly
> after a loss of power unless this is the case.  If the system in the Flash ROM
> were accidentally, or intentionally, corrupted the calculator would be
> unusable and could not be recovered.   Upgrades to the system or new
> applications would be lost in the event of power loss.  Even if some code was
> still in the Flash ROM the system wouldn't know the address of it.

References:

Re: Re: A89: Backups

From: Mrosst92@aol.com

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