I see no reason to break the trend so - Wow!! That's really cool. Makes me want to go buy a TI-89.

Wow that is crazy it really shows what the calculator is capable of its amazing that is amazing I can't get over it. Now all I wish is that there could be a ClosedGL for the TI 83\84 series!!!!!!!!!!!!!!!!!!!!!

it could very well exist on the z80. Heck, you could even program it in Basic, it's just that it would be slow.
A calculator can do anything as long as it has enough memory.

my thoughts exactly.

You can program anything onto a calculator with the limits of memory.

the real question is if it will render fast enough to be useful, but I think that in Asm on the z80 calcs you could definitely make an acceptably fast 3d engine.

I´ve tried it on my V200 and its very slow.But If you can wait 5Minutes... Its amazing!

I dont think that would work very well considering 1. The z80 does not have enough Ram and 2. the z80 doesnt support a possible Grayscale method for this type of rendering.

You *really* don't need a lot of RAM to render a 3D scene if you are not trying to do something fast: just do a ray tracer!
And concerning the grayscale, I don't see why the way pixels are rendered would cause a problem.

RAM's definitely not an issue, as you said, and what is it with grayscale? It's not like the 89 has hardware support for grayscale or anything...AFAIK, they do it on the 89 in the same way as on the 83+ or 86, by flipping quickly between a few images with an interrupt handler. Although it would be a lot faster on the 86 because of the memory-mapped display...

Thus 8 -- or is it 7? -- grays are workable on the 86.

-W-

People have done up to 32 IIRC, but 4 is really the max for moving images, and 8 for showing still pics without flicker.

Ok, I found a program on TiCalc called Supergrey. It is an *Almost* flickerless Greyscale tool. You could put this into a version for the 84's. You probabally need ALCDFIX to run it on an 84. I did.

Edit:I meant that you could output the picture into a compatable format for this program.

I just tried Super Grey. It didn't work. Ram cleared on my TI 84+ Silver Edition. Worked on TiLem, but then I couldn't get it to quit and had to reset. Can't get it working again. However, the greyscale engine in the game "Desolate" looks pretty good, with 4 level greyscale, but there is a little bit of flicker.

I think there's a 3D graphing program for the 86, and it actually works pretty well (although it's slow). The problem is that for one thing, the processor in the Z80 series is run at a lower speed, and the Z80 is less powerful than the 68k.

There's Graph^3 for the 83+, runs faster that the 3d graph feature on the 89 (though the resolution is obviously worse).

For grayscale, don't you change where the screen reads the data for what to display? Not, turning a pixel on and off.

depending on the calculator modle the place where the screen reads from may be changed but the effect is always turning pixils on and off

very impressive. OO

Hmm. This is very promising, although it takes much time to generate.

Those screenshots are simply amazing. It gives me another reason to go out and buy an 89 titanium.

Ya, it gives me another reason to buy a TI-89, but i have 150 reasons why I shouldn't and they're all the same $$$!