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#41 R00KIE

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Posted 16 December 2004 - 11:07 AM

HP calcs are not difficult to handle once you get used to them, you can customize the way you access menus so they are accessed much like the CFX series calculators, key assignments, idle time before turning off, pre and post processing of arguments on the stack, fonts, and a lot more that i can't think of right now.
And about programing, SYSRPL is extremelly powerfull, no error checking and most functions are directly written in ASM so it's almoust as fast as ASM and much easyer to program, not mention that we (HP users/programmers) know the exact place were that functions are in the rom and we can program on calc.
Anyway i use my hp mostly for math/engeneering so the degree of freedom i have while using it makes that calc the best FOR ME.

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Posted 18 December 2004 - 01:34 AM

On the (A)FX you can code in:

ASM
C
Pascal
Casio BASIC
so you don't have "MORE" lanuages but we have the better ones since
the AFX/FX uses a 286 compatible processor.

So porting from PC to Calc is quite easy.

And yes, we can change keys using ASM to change the keyboard interrupt and this way reprogram the keys.

And about changin the OS. Well ok this is on the ROM and therefor can not be changed but anyways we can patch into it using the interrupts
and therefor change pretty much everything (if we only knew where "everything is :) ).

<{POST_SNAPBACK}>


On the HP49g+, you can program in User RPL, Sys RPL, a crappy form of BASIC, Saturn ASM, ARM ASM, and C. In addition there is an old version of a Pascal compiler but o one uses it.

The OS is flash and has no protection whatsoever. You could overwrite OS if you wanted to. OF course interrupts and the like can be adjusted easily. HP even provided the basic OS API for free.


"so you don't have "MORE" lanuages but we have the better ones since
the AFX/FX uses a 286 compatible processor."

I'd call a 203MHz ARM a bit better then a 286. ARMs are used everywhere these days; they are an extremely popular CPU for embedded systems.

#43 huhn_m

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Posted 18 December 2004 - 11:41 AM

yeab but it is easier for us to port pc programs.

As for the rest you might be right ;)

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Posted 24 February 2005 - 11:46 PM

Hey, what about the cost of calculators? I'd say Casio has cheaper graphing calculators than TI's and Hewlett Packard.

#45 liquid

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Posted 25 February 2005 - 10:05 PM

casio basic suxx hard, i have a 9850gb+
math functions are... ok, but basic 
i already overclocked it to 8mhz and upgraded to 64kb
a friend even did it with a switch, so he can still use the link function!


Could you PLEASE tell me how you overclocked a 9850gb+ . As far as i know i thought this was impossibe, iv only seen websites where its done on Ti calcs!!?

#46 huhn_m

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Posted 26 February 2005 - 05:53 PM

please look into the "COmpiling on calc" threat.

There is a link to a german page where someone has
overclocked hios calc (doubled the speed) and doubled the RAM.

Unfortunately everything is in german and the OC is not explained at all I think.

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Posted 28 February 2005 - 10:01 PM

Can anyone provide a (really) good translation of Marcel's Seite on adding more RAM?

#48 Bob Vila

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Posted 28 February 2005 - 10:09 PM

try google translation...

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Posted 02 March 2005 - 05:02 PM

I want to build a graphing calculator for a project so does anyone know a good link where to start?

#50 huhn_m

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Posted 02 March 2005 - 05:51 PM

you want to build one? I think this is nearly impossible unless you

*want to carry a quite huge box with you
*can create PCBs with Graphics Controllers and LCD controllers and so on

I think it is quite difficult. WHy do you want to do this?

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Posted 02 March 2005 - 06:26 PM

Its for a school science project in electronics.

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Posted 02 March 2005 - 06:48 PM

Does anybody know a link where it can help me make a graphing calculator?
Please???

#53 Andy.Davies

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Posted 02 March 2005 - 07:11 PM

just out of interest how old are you? i am at uni and they dont want us to attempt projects like that, then again they dont meet course specs.

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Posted 02 March 2005 - 07:15 PM

Please tell or give me a link to build a graphing calculator!!!
Please!?!?!

#55 Andy.Davies

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Posted 02 March 2005 - 07:49 PM

Stop Whining! Please!

i personnaly dont know of anyt site to build a graphic calculator, and personally unless you are brillinat at asmbaly language, soldering, electronic theory, and Maths i dont think its possible.

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Posted 03 March 2005 - 03:48 PM

What about a link or tutorial on building a scientific calculator?
I could start from there...

#57 CrimsonCasio

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Posted 03 March 2005 - 05:53 PM

this just reminds me that calculators with a square root key used to cost hundreds of dollars as recently as when my dad was in college...

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Posted 03 March 2005 - 10:24 PM

"What about a link or tutorial on building a scientific calculator?"

This is 100x easier then building a scientific calculator.


* buy a microdontroller and learn how to program it. Ideally use one that has a free C compiler and a floating point library. AVRs are good for this sort of thing

* buy a character LCD based on the stadard HD44780 chip. Connect it to the micro and make it say "hello world" to learn how to use it.

* buy a premade matrix of keys. Learn how to read specific keys by scanning the matric

* write software for your calculator. RPN is much easier to implement. Using C will help here.

* Create a custom machined case if desired.

#59 betoe

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Posted 03 March 2005 - 10:51 PM

Better dont waste time, get a job and buy one calculator, it will be the best way (and cheapest) and the final product will be better.

#60 Andy.Davies

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Posted 03 March 2005 - 11:27 PM

Better dont waste time, get a job and buy one calculator, it will be the best way (and cheapest) and the final product will be better.

<{POST_SNAPBACK}>


I totaly agree with you betoe. And finding a Free C compiler for a microprocessor isnt easy, unless you break the law :nonono: And again to make a scientific calc you could buy one.

on the other hand just make a normal calc, i think that is alot easier :) and possible :P

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Posted 04 March 2005 - 01:12 AM

"And finding a Free C compiler for a microprocessor isnt easy, unless you break the law "

Nonsense. Have you ever heard of GCC? It targets more then PCs you know.

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Posted 04 March 2005 - 11:27 PM

Can anyone provide a link or tutorial on building a four-function calculator? :D

#63 huhn_m

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Posted 05 March 2005 - 07:10 PM

I don't think anyone can and I think you won't find a lot of information on that
on the internet since not many people are interrested to build something that will probably be VERRY expensive and VERRY difficult to make if they can get it for a tiny amount of that money pre-built and 1000 times better ...

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Posted 19 March 2005 - 03:52 AM

The fx-9750 G Plus casio calc is all i can afford and it does a good job,
EXCEPT.....i get really angry wif this as it take all the fun out of the calc.....the CASIO BASIC is pure KRAP. If only u could program assymbly(without using new rom chip and hacking) on it then it would be fun. Im stuck having to figure out better ways to program graphics using stat graphs and lists, being as conservative as possible in my games in programs. The only pro of this is it teaches u to program better. I feel sad for every programmer that buys the cfx calcs and thinks WOW, i can pogram games on it,,,,,but soon finds out the horrible truth when plotting pixels on the screen for the first time and seeing it plot at 2 pixels per second. That sort of thing makes u feel sick, its just pure evil :P

#65 Daruosh

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Posted 19 March 2005 - 07:09 PM

I think TI92 is much better that AFX, It runs BASIC programs slower, but has more options. Better CAS.
In hardware, AFX 2+ is more powerfull, but weak software

#66 Marco

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Posted 19 March 2005 - 08:48 PM

In hardware, AFX 2+ is more powerfull, but weak software

So let's make better software :D

#67 Daruosh

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Posted 19 March 2005 - 08:56 PM

Developing a better software requires MONEY & TIME.

#68 liquid

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Posted 14 April 2005 - 09:05 AM

Developing a better software requires MONEY & TIME.


I dont think so,
all u need is one university student on holiday so has plenty of time and the will to do it.

edit : ure definatly right about the time part B)

#69 Marco

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Posted 14 April 2005 - 10:59 AM

^^ my holidays are over since last week :lol2:

#70 verticale

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Posted 15 April 2005 - 11:54 AM

In my oponion...TIs are best for doing numerical and symbolical operations.

<{POST_SNAPBACK}>


I am using ti89 and hp49G emulators, and I think the the numerical equation solver of HP is more powerful than TI one...It can solve equations including "arg" or "abs" of a complex expression, with no problem.
Besides, there is also a library for solving nonlinear equations sistems...very useful.
Has TI89 something like that?

Bye.
Verticale.

#71 liquid

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Posted 10 June 2005 - 10:49 AM

its Not FaiR.....i want to be able to program assymbler and c into my calc but its a gay fx 9750G Plus.......I want to kill the guy at casio who made the decision that assymbly would not be an option! ArHHHH :banghead: :profanity: :rant:

Casio Basic is as useless as tits on a Bull,
or a broken pencil...........pointless

#72 R00KIE

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Posted 12 June 2005 - 04:20 PM

CFX calcs are not meant to be the all mighty calcs lots of people want them to be, if you wanted power you should have researched a bit BEFORE buying a calculator

#73 huhn_m

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Posted 12 June 2005 - 05:05 PM

Yeah. CFX are mainly cheap calcs for poor pupils who don't need lots of power but lots of math functions (for normal school work) and this is all the CFX series offers. Not more but also not less.

#74 liquid

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Posted 12 June 2005 - 11:49 PM

well im a poor student so all other calcs not an option, but i still think it should have supported a little bit of assymbler, i dont want a lot of power or mathfunctions, just for assymbler to be supported. AND not by unsoldering rom chips as i have not the equipment to read rom chips.

#75 Future owner maybe

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Posted 14 February 2006 - 03:42 AM

I'm a Brazilian student in electrical engineering course. Casio have just 5 models in his official seller here (Classpad 300 and 7400 G+ are the only graphic model). TI don't have any official seller in Brazil. Im My country just the HP have interest in sell his products. My HP has broken 2 times yet and this time she die.

Hou You can see I am seeking for a new model (TI or CASIO) and I ask for help, telling this to all:

- I have no restrictions for exams or others, when I need I can use my CASIO fx-82MS;
- I need to work with complex numbers in matrices, vectors, polys and liear systems (entries and answers);
- Graphs are wellcome;
- Durability is very important (because I'll work without any warranty);

For all: If you click in this site (official of CASIO in germany) http://www.casio-eur...hner/vergleich/ you will see the comparison between two models directly or the PDF file. The duel ALGEBRA FX 2.0 PLUS versus Classpad 300 is very interesting. ALGEBRA FX 2.0 PLUS loks much better to me.

I hope You all give some hopefull information for me as I see many times in this forum. Sorry about my english. I'm learning to stop with theese translators because They are sucks. ^_^ .

Thanks for all.

#76 huhn_m

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Posted 23 February 2006 - 06:26 PM

If you can afford it you could go with the CP300 but I like the AFX really much so I would recommend this one. (Though I never work with complex numbers ... so I can't tell a thing about them)

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Posted 05 September 2010 - 06:21 AM

One word: This is no fair comparison by any means.


7 words too many~




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