[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).

That was exactly what I used :o~

>If you need to find the Data, open the rom with
>ultraedit, its the only reliable way of doing it.

I should definately get it soon, I think.

>Jimmy Conner

Ronald Teune

>> 
>> >  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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