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Hacking a FX7000GA for memory


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#1 Kaugex

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Posted 12 September 2003 - 03:48 PM

Hi!

First of all I am a proud posessor of a new Casio FX7000GA. It was the only graphic calculator in stock here in Romania, and an order for a newer model ment an aditional 80$ shipping fee witch I can't afford... It isn't heaven here u know :blink:

She is a very good and faithful (?!) calc, btw I named her Mikae Casio (japanese name :D). It doesn't matter that she ain't got any matrix/determinant operations because for all this I can write programs (I am a skilled C/C++ programmer and 3d designer). But she has got only ONE problem: the lack of memory (422 Bytes). If she had 1k, it would be heaven, beleive me! Also I do not need all the memories, A-L would be sufficient, that way getting an additional 112Bytes which could mean the difference between life and death. :) Well, not life and death but a good expansion to my determinant-solver program ;) So I heard that it is possible to hack the pretty lady and use the inverse of the Defm => more steps, less memory. But I searched the whole wide web and found nothing about it :(

So I am asking here, because this is the biggest Casio community of what I saw: Is there a method for expanding the program-memory in sacrifice of the variable memories on the Cas FX7000GA?

Waiting your answer,
Gus :ph34r:

#2 CrimsonCasio

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Posted 12 September 2003 - 03:53 PM

the ultimate site on hacking casio calculators: http://prg.rkk.cz/~mpoupe/
the guy who made this (Martin) stops buy here now and then, he and a few others will be able to personally help you, from what I know it wont be easy...

#3 Bob Vila

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Posted 12 September 2003 - 04:12 PM

the easiest way might be to get a different ram chip. these sites...

http://www.geocities...ations/cfx.html

to get all the pics try

http://www.geocities...k02/memory.html

#4 Kaugex

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Posted 12 September 2003 - 04:15 PM

Thank you for the link (I didn't know of it), the memory map for the 7000G seems to be useful but it does not answer my problem. At least for a while you will keep me busy ;)

Waiting for response from other wizards,
Gus :ph34r:

#5 Kaugex

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Posted 12 September 2003 - 04:24 PM

Bob> I don't think that the adressing of the 7000GA would support up until 64Kb... also I would not know from where I could get low-power chips of max 4Kb (the max.) here in Romania...

Waiting, praying and hoping,
Gus :ph34r:

#6 Bob Vila

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Posted 12 September 2003 - 04:28 PM

oh, i missed that whole thing about the 7000, i thaught you had at least a 7400 :lol: , sorry

#7 Kaugex

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Posted 12 September 2003 - 04:35 PM

Sad, isn't it? :D

Gus :ph34r:

#8 CrimsonCasio

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Posted 12 September 2003 - 04:38 PM

gosh, i feel sorry for you...

#9 Kaugex

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Posted 12 September 2003 - 04:51 PM

You don't have to, I am perfectly happy :D But only hungry for moooree memooory!

Gus :ph34r:

#10 Bob Vila

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Posted 24 September 2003 - 05:28 PM

kaugex, please make it clear to what you are saying


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