[A83] Re: decompiling a romshot
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[A83] Re: decompiling a romshot
Data finding is not going to work with the rom, I can
definitely tell you that. Since there is no way to
tell is something is meant to be data or code in z80,
its more than like going to output everything as data
(since everthing in the rom is eventually accessed
like it is). But then again, since you don't have
labels.... everything might still be outputted as
code.... (I can't remember if I fixed the bug in
that). I'll try it myself and see what I get.
I open it with UltraEdit, I wouldn't dare open it in
that editor I added in... it works with the small ones
fine, but it chokes on anything huge (just like
wordpad).
If you need to find the Data, open the rom with
ultraedit, its the only reliable way of doing it.
Jimmy Conner
--- Ronald Teune <rtwolf@gmx.net> wrote:
>
> > You did disable labels and data finding correct?
>
> Uhm no
>
> >Otherwise, with a the rom image, it is going to
> look
> >very, very funky, you'll probably get mostly .db's.
> >There is no easy way to determine whether sometime
> is
> >meant to be code, or if its meant to be data. And
> if
> >you used labels, you will run into problems since
> the
> >rom is paged.
> > It probably took so long because of the labels
> and
> >datafinding.... Lets see, a disassembled 83p rom,
> >without labels and data finding on... 7.5 meg
> source
> >file, with a 12.5 meg List file, done in 5.5
> minutes.
>
> That's fast!
>
> >The reason I say that it has limited rom
> disassembly
> >capabilities, is just that it will do a disassembly
> of
> >anything with a .rom extension (no other checking
> >whatsoever), you just have to tell it where to
> start.
> >If the address gets above FFFF, I just start it
> again
> >at 4000.
> >
> >Hope you find what you are looking for in the rom,
> >thats a hell of a lot of code to wade through.
>
> I'm looking for the text. So I need data finding, I
> guess. It's busy now, at
> 7%, 1:30 mins, without label-finding. Another
> question: how did you edit the
> file?!?! (19%, 2:45 )
>
> >Jimmy Conner
>
> --
> Ronald
>
> >
> >
> >
> >--- Ronald Teune <rtwolf@gmx.net> wrote:
> >>
> >> Thanks, Tijl en Peter.
> >> It actually worked. Decompiling the VTI romdump
> >> (including Flash Memory like
> >> groups, programs). It took exactly41 minutes and
> 36
> >> seconds. Now I have
> >> another problem. How do I edit the
> 9.57-MB-file?!?!
> >> :o~
> >> Actually, I just want to edit the OS, not the
> other
> >> mem. Does someone still
> >> have an original 1.10 BaseCode from TI?
> >>
> >> >> From: "Ronald Teune" <rtwolf@gmx.net>
> >> >>
> >> >> Uhm... what *is* a romshot actually?
> >> >
> >> >Just a 'picture' of the rom, so a rom dump
> actually
> >> >
> >> >Tijl Coosemans
> >> >
> >>
>
>>------------------------------------------------------------
> >> >Want a free mail at http://www.mail.be ?
> >> >
> >> >
> >> >It's like a screenshot, but this time, it's not
> an
> >> image of the bytes on
> >> >the screen, but an image of the bytes in the
> entire
> >> rom. It's also called
> >> >rom-image, rom-dump or ROM for short. It is used
> in
> >> the emulators like
> >> emu8x
> >> >and !VTI!.
> >> >
> >> >It contains all of the the programming TI put in
> >> the calculator so it'd
> >> >probably be illegal to disassemble (it is when
> you
> >> downloaded a new OS from
> >> >TI's website, read the disclaimer. I can't
> remember
> >> if they put such a
> >> >disclaimer on the software wich comes with the
> calc
> >> initially, so... :-)
> >> >
> >> >--Peter Martijn
> >> >
> >> >>
> >> >
> >> >>
> >> >>
> >> >> Uhm... what *is* a romshot actually?
> >> >>
> >> >> Ronald
> >> >>
> >> >> >i believe that is why jimmy conner made
> >> "dissassembler" it has only
> >> >> partial
> >> >> >rom support, and i have never tried it
> though,
> >> but it would be worth a
> >> shot
> >> >> >
> >> >> >-cole south
> >> >> >
> >> >> >
> >> >>
> >> >>
> >> >>
> >> >
> >> >
> >> >
> >>
> >>
> >>
> >>
> >
> >
> >__________________________________________________
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> >
>
>
>
>
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