[A83] Re: Archived Variables

To: assembly-83@lists.ticalc.org
Subject: [A83] Re: Archived Variables
From: Peter-Martijn Kuipers <hyper@hbyte.net>
Date: Wed, 13 Mar 2002 21:53:48 +0100 (CET)
In-Reply-To: <PNEAIMMCAGBGBHPHOHEKOEANCAAA.tlutz@stevens-tech.edu>
Reply-To: assembly-83@lists.ticalc.org

Yes it can.

if you'll read the vat entry of an archived program, you'll 
find that there is a flash page noted and the address of the program 
somewhere between 4000 and 7FFF.

you can use the ldcindpaged romcall to load the byte (reg)hl at flash page
(reg)b

See the 83+ SDK on th ldcindpaged pages for more info on how to use it.

(You might check out nifty's source too, but its majorly
uncommented)...

--Peter-Martijn

On Wed, 13 Mar 2002, Thomas Lutz wrote:

> Can an APP read archived variables (like an archived AppVar)? Does it have
> to be unarchived first?
> 
> ...and a few questions about the flash rom...
> 
> I understand the addresses from 4000-7FFF are used for a flash
> page...0000-3FFF are then used for the system ROM (OS)? When an APP isn't
> running, what is in 4000-7FFF? Is it more stuff for the OS?
> 
> How would I be able to switch ROM pages and access a variable for reading
> without unarchiving, if it can be done?
> 
> I know these are a lot of questions, and I appreciate any help you can give
> me.
> 
> Thanks a lot!
> 
> -Tom
> 
> 
>

References:

[A83] Archived Variables

From: Thomas Lutz <tlutz@stevens-tech.edu>