I'm not sure if anyone at Omnimaga is still doing Prizm hacking, but I figured I might as well cross-post this in case any Omnimaga Prizm coders haven't yet been glancing at Cemetech's recent Prizm work. At any rate, I'm proud to present the first public beta of Graph3DP, a 3d graphing application for the Casio Prizm. Enter one to six 3D equations Z=f(X,Y) in terms of X and Y, adjust the window as need, and spin and zoom the resulting graph! This public beta demonstrates most of the major features of the program, including entering multiple equations, graphing, adjusting settings, and even tracing graphs. Additional work is still to be done on many of the features:

:: Debugging and expanding the parser
:: Debugging input routines
:: Adding the zoom menu
:: Adding real-time zooming
:: Improving the rotation algorithms to support dynamic axes
:: Complete tracing features
:: More graph-coloring schemes.

Give it a download and try it today! In other news, Cemetech's developers have been hard at work expanding Cemetech's WikiPrizm reference resource for Prizm users and programmers alike, and have been ardently working to learn more about the Prizm's hardware. Ashbad and myself, aided by Fishbot, new Cemetech member brijohn, and others, have been working with things like overclocking and directly accessing the data lines in the Prizm's serial / I/O port. Brijohn, using his experience with Casio's electronic dictionaries and translators, correctly pegged the CPU core as an SH7724 chip from Renesas, whereas previous guesses had ranged from the SH7721 to the SH7730 even to the fx-9860G's SH7705 CPU. With this information, Ashbad has now succeeded in tweaking the CPU speed in software, and will be reporting further findings soon. I'm poring over possible port numbers to determine how to poke the MSIOF port; if I'm successful, bidirectional transfers on both the RxD and TxD lines might be possible, meaning that CALCnet and stereo audio might be coming soon.

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[Casio Prizm] Graph3DP v1.0 Beta 1

dont worry, im still here
ive just got caught up in all of my other projects and learning

Now that we have 3d graphs we need a CAS

This is pretty nice. I'm learning C/++ so I will start hacking on the prizm soon enough.

Five months ago, Graph3DP 1.0 Beta 1 was released to the public, showing off some of the features of my 3D graphing Add-In for the Casio Prizm. Today, I am happy to introduce the first release candidate of Graph3DP. Enter one to six 3D equations Z=f(X,Y) in terms of X and Y, adjust the window as need, and spin and zoom the resulting graph! This release candidate includes all of the functions and features of the finished product, including entering multiple equations, graphing, adjusting settings, and even tracing graphs. The underlying equation-parsing system has been overhauled for speed and correctness, and now includes thirteen built-in math functions, from sin() to atan() to sqrt() to ln(). Since the first beta:

:: The equation parser, gCAS2, has been overhauled by AHelper0 to be faster, more accurate, and handle more equation forms.
:: I have made independent changes to gCAS2 to make it more foolproof, support more functions, understand the negative sign, and much more.
:: The 3D rotation subsystem of Graph3DP's custom-built 3D rendering engine has been overhauled to make off-axis rotation possible. Now, when you press the arrow keys to rotate a graph, it will rotate exactly as you would expect.
:: Many issues from the beta have been debugged and solved; many new features have been added, including improved tracing and the ability to quickly toggle which graph(s) are displayed.

As this is a release candidate, I need feedback from you, our faithful Cemetech users. Please test out Graph3DP, put it through its paces, and report any problems, glitches, or useability issues. Please also feel free to mention any positive comments or feedback; once enough users have either reported bugs or given this build a pass, I will be able to publish it as a final 1.0 release.

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Graph3DP 1.0 Release Candidate 1

That looks very nice! I like it how it colors the graphs

Thanks guys. Ruler, yes, it saves equations and window settings.

Release Candidate 2 is here! RC2 adds many bug and stability fixes, a toggle-able bounding box and axes, another graph color mode, and several useability improvements. Give it a download and try it today; this will surely become an permanent fixture on your Casio Prizm. The full list of fixes:

:: Added 'pi' constant, typed with [2nd][EXP]
:: Added poweroff from equation editor and graph view
:: Added toggle-able axes and bounding box
:: Added a third graph color mode
:: Inverted initial rotation so that graphs start the correct way up
:: Graph color mode, axis settings, and background color are now saved between sessions, just like the equations and window settings.
:: Fixed bug in line-clipping routine when both endpoints of a line are offscreen but part of the line is onscreen
:: Fixed several crash-causing bugs in gCAS2 computer-algebra system, including crashes with equations like "function()+" and "function(3+)"
:: Many other fixes and useability tweaks.

Thanks to all the users who gave me feedback and suggestions, including but certainly not limited to glb08ma, Deep Thought, flyingfisch, _player1537, ruler501, and others.

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Graph3DP 1.0 Release Candidate 2

That addin starts to look like better than any calc 3D graph I would saw in my short lifetime! :p