Re: A92: Memory layout of the 92plus


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Re: A92: Memory layout of the 92plus




Anton Ivanov schrieb:
>
>
>
> Arno Kizina wrote:
>
> > Concerning the thread "recovery on crashes" I recently examined the 92plus
> > memory :
> > $000000-$03ffff: RAM
> > $040000-$1fffff: 7 mirrors of $0-$3ffff
> > $200000-$2fffff: OLD TI92 ROM (parts of it seem still to be used)
> > $300000-$3fffff: mirror of $200000-$3fffff
> > $400000-$59ffff: TI92plus ROM
> > $5a0000-$5fffff: Archive Memory
> > $600000-$6?????: Memory mapped I/O
> > above: nothing
> > Archive memory is totally deleted after a crash! Archived variables are
>  stored
> > in backups and recovered to the archive.
> >                 A.K.
>
>  You mean that the plus module has parts of the old ROM on it?  Or are you
>  saying
> that if the calculator has masked ROM then the plus module utilizes it?
>
> --
> Anton Ivanov
> ivanova@ucs.orst.edu
> http://www.geocities.com/CapeCanaveral/Hangar/9136
>
>
I mean that the plus module uses addresses from $400000 to $5fffff, it doesn't 
have parts of the old ROM in it, the old ROM is still there where it always used 
to be.			A.K.
Arno.Kizina@t-online.de


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