Author Topic: Casio Prizm already for sale???  (Read 26099 times)

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Offline JosJuice

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Re: Casio Prizm already for sale???
« Reply #15 on: December 23, 2010, 10:49:16 am »
I wonder if Casio will have emus, because it is unlikely for me to get one anytime soon...  :(
Same here.

Offline DJ Omnimaga

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Re: Casio Prizm already for sale???
« Reply #16 on: December 23, 2010, 12:44:24 pm »
They announced a trial software but I don't know if it will include an actual emu. Also, their emulators won't run at the same speed as the real calc, I am pretty sure.

Personally I'm getting one even though they do not know if a SDK will come out, because it at least has decent TI-BASIC commands. If it was like the Nspire in the way it's not programmable, has no input/drawing command nor Locate function, I would never bother.
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Offline AngelFish

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Re: Casio Prizm already for sale???
« Reply #17 on: December 23, 2010, 03:48:36 pm »
I guess someone will have to explore the Prizm and make some kind of SDK until the Casio one comes :S

I've already been working on it for quite some time.

I guess someone will have to explore the Prizm and make some kind of SDK until the Casio one comes :S
Finding a way to run unsigned code might be tricky... Maybe as tricky as the Nspire.

Doubtful. We will probably have some sort of access to the internal binaries because the Prizm will be viewed as a Flash drive by computers. Actually, let me see if I can do that with a normal flash drive...

EDIT: Yes, it's possible to access the internal binaries of a flash device.
« Last Edit: December 23, 2010, 04:11:23 pm by Qwerty.55 »
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Offline JosJuice

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Re: Casio Prizm already for sale???
« Reply #18 on: December 23, 2010, 04:45:34 pm »
I guess someone will have to explore the Prizm and make some kind of SDK until the Casio one comes :S
Finding a way to run unsigned code might be tricky... Maybe as tricky as the Nspire.

Doubtful. We will probably have some sort of access to the internal binaries because the Prizm will be viewed as a Flash drive by computers. Actually, let me see if I can do that with a normal flash drive...

EDIT: Yes, it's possible to access the internal binaries of a flash device.
Wow. That... is cool.

Offline DJ Omnimaga

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Re: Casio Prizm already for sale???
« Reply #19 on: December 25, 2010, 10:10:16 pm »
I wouldn't be surprised if it was possible on the Prizm to install an hacked Prizm file (or even backup file) to run assembly programs the same way you do on a TI-73, 82, 85 or 92.
In case you are wondering where I went, I left Omni back in 2015 to form CodeWalrus due to various reasons explained back then, but I stopped calc dev in 2016 and am now mostly active on the CW Discord server at https://discord.gg/cuZcfcF



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Offline jnesselr

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Re: Casio Prizm already for sale???
« Reply #20 on: December 25, 2010, 10:10:48 pm »
I guess someone will have to explore the Prizm and make some kind of SDK until the Casio one comes :S

I've already been working on it for quite some time.

I guess someone will have to explore the Prizm and make some kind of SDK until the Casio one comes :S
Finding a way to run unsigned code might be tricky... Maybe as tricky as the Nspire.

Doubtful. We will probably have some sort of access to the internal binaries because the Prizm will be viewed as a Flash drive by computers. Actually, let me see if I can do that with a normal flash drive...

EDIT: Yes, it's possible to access the internal binaries of a flash device.
How do you even access that? Tutorial? ;-)

Offline DJ Omnimaga

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Re: Casio Prizm already for sale???
« Reply #21 on: December 25, 2010, 10:16:17 pm »
I think he has been looking for in-depth info about the calc in the doc and some file formats.
In case you are wondering where I went, I left Omni back in 2015 to form CodeWalrus due to various reasons explained back then, but I stopped calc dev in 2016 and am now mostly active on the CW Discord server at https://discord.gg/cuZcfcF



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Offline jnesselr

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Re: Casio Prizm already for sale???
« Reply #22 on: December 25, 2010, 10:17:02 pm »
I think he has been looking for in-depth info about the calc in the doc and some file formats.
I'm talking about binaries on a flash drive.  Because that is truly amazing that he can do that.

Also, Dj, congrats on getting 21,100 posts.

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Re: Casio Prizm already for sale???
« Reply #23 on: December 25, 2010, 10:19:14 pm »
Ah ok, not sure then X.x

And yeah I noticed I got to 21000 quick. :P (I slowed down lately, though)
In case you are wondering where I went, I left Omni back in 2015 to form CodeWalrus due to various reasons explained back then, but I stopped calc dev in 2016 and am now mostly active on the CW Discord server at https://discord.gg/cuZcfcF



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Offline FinaleTI

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Re: Casio Prizm already for sale???
« Reply #24 on: December 25, 2010, 10:23:36 pm »
I guess someone will have to explore the Prizm and make some kind of SDK until the Casio one comes :S

I've already been working on it for quite some time.

I guess someone will have to explore the Prizm and make some kind of SDK until the Casio one comes :S
Finding a way to run unsigned code might be tricky... Maybe as tricky as the Nspire.

Doubtful. We will probably have some sort of access to the internal binaries because the Prizm will be viewed as a Flash drive by computers. Actually, let me see if I can do that with a normal flash drive...

EDIT: Yes, it's possible to access the internal binaries of a flash device.
How do you even access that? Tutorial? ;-)
^^ This.

Then I could see if I could find anything on my Prizm.


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Offline DJ Omnimaga

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Re: Casio Prizm already for sale???
« Reply #25 on: December 25, 2010, 10:56:15 pm »
In the meantime, FinaleTI, can you try the Casio BASIC equivalent of the following code?

1->A
While 1
If A=1
Then
Change color to red
Else
Change color to yellow
EndIf
Locate 1,1,"HELLO WORLD"
EndWhile

And tell me if you get something close to orange or if it simply blinks?
In case you are wondering where I went, I left Omni back in 2015 to form CodeWalrus due to various reasons explained back then, but I stopped calc dev in 2016 and am now mostly active on the CW Discord server at https://discord.gg/cuZcfcF



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Offline jnesselr

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Re: Casio Prizm already for sale???
« Reply #26 on: December 25, 2010, 11:09:44 pm »
This looks interesting. But wouldn't you have to change A back to 1 in there like this:
Code: [Select]
1->A
While 1
If A=1
Then
Change color to red
0->A
Else
Change color to yellow
1->A
EndIf
Locate 1,1,"HELLO WORLD"
EndWhile
« Last Edit: December 25, 2010, 11:10:04 pm by graphmastur »

Offline calc84maniac

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Re: Casio Prizm already for sale???
« Reply #27 on: December 25, 2010, 11:51:31 pm »
If the Prizm is telling the computer that it's a flash drive, it can probably choose which files show up. It doesn't have to grant access to the entire filesystem.
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Offline AngelFish

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Re: Casio Prizm already for sale???
« Reply #28 on: December 25, 2010, 11:57:57 pm »
I think he has been looking for in-depth info about the calc in the doc and some file formats.
I'm talking about binaries on a flash drive.  Because that is truly amazing that he can do that.

I have been using the information provided by Casio and that's gotten me pretty far. Accessing the binaries on a flash drive is very easy with the proper program, though. You have to use what's known as a disk editor to access them. I use one called HxD for most of my stuff. After you install the program, you run it as an Administrator and you press the "Open Disk" button. This will bring up a window displaying all of the drives on the computer. You select the proper drive and it opens the entire disk.
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Offline uberspire

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Re: Casio Prizm already for sale???
« Reply #29 on: December 26, 2010, 02:16:00 am »
I guess someone will have to explore the Prizm and make some kind of SDK until the Casio one comes :S
Finding a way to run unsigned code might be tricky... Maybe as tricky as the Nspire.
Since it seems some of you are very interested in programming the Prizm, I'll tell you guys this (I apologize if it's very lengthy):

From disassembling the addins given by Casio, the Prizm uses a SuperH 3 processor, which is what Casio has been using in their products for the last decade (fx-9860, fx-9750GII, Classpad 300, Pocket Viewer, etc.) The addins contain a header 0x7000 bytes long which contains info specific to the addin (appname, icon bitmap, date, version, copy protection, size of addin in bytes, etc.) before the actual binary starts. Addins are loaded into memory offset 0x00300000 (execution starts at 0x00307000). You can confirm this yourself if want using objdump that has been cross compiled for SuperH support (such as GCC targeted for sh-elf). SuperH 3 software manual: http://documentation.renesas.com/eng/products/mpumcu/rej09b0317_sh_3sm.pdf

If someone has the time, it should be easy to crack the header format. The header is about ~28KB, large enough to contain the icon bitmap for the addin. Once someone knows what's the icon dimensions are in pixels, you could probably find it in header by using some hex to RGB viewer.

Hardware wise, it seems pretty similar to the fx-9860G (it seems to be just a fx-9860G with an upgraded color screen and a larger flash chip). From this, I'm guessing the operating system is stored in memory offset 0xA0000000 (Area P2).

You can try asking Casio Japan (not the USA branch, they won't be able to help much since they don't design the calcs) for technical info and questions about an SDK. Someone in the community asked Casio Japan for the USB communication specs and their R&D department nicely gave it us. You can keep bugging Casio Japan to release an SDK, but you have to understand it takes them time to make an SDK since they have to polish up their emulator which the R&D guys use in development, package up a compiler/linker, write manuals, etc. Casio doesn't make any money off SDKs, so I don't think it's their top priority. I think when the fx-9860G came out, Casio didn't release an SDK until a year later IIRC, but hopefully we don't have to wait too long this time for the Prizm. According to Casio's website, they plan to release some trial software at the beginning of next year, so you guys should keep a watch out for that since it might include an emulator.

I'd try to find out more, but I'm too busy right now in college. Hopefully you guys will find everything you need to know in the near future. Happy hackings and Merry Christmas!
« Last Edit: December 26, 2010, 02:17:37 am by kucalc »