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Messages - willrandship
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751
« on: November 12, 2012, 06:16:15 pm »
The pandaboard seems like it will be a bit overpowered, but at least it doesn't have an FPU (big time cheating device for some fancier ARM boards  Don't expect one on anything affordable except the RPi) Make sure you keep in mind the drastic decrease in performance your actual calculators will have compared to that board.
752
« on: November 11, 2012, 06:06:03 pm »
A screen driver is a separate chip, dedicated to running the screen. It would handle the framerate issues and such. The only worry would be the calculator's speed at pushing new images in, so you could even do it with the old 6 mhz CPU. It would just be slow.
The non-color ti-84s and ti-83s already have screen display drivers. They're why we have to sync our grayscale Axe routines (The screen ALWAYs updates at 60hz, regardless of CPU speed.)
RecallPic would probably take a few seconds. So would storepic. They would also take ridiculous amounts of space.
753
« on: November 11, 2012, 05:53:45 pm »
The ez80 IIRC isn't actually z80 architecture. It has a backwards-compatible z80 mode, similar to how the GBA has a backwards-compatible GBC mode, except built into the processor.
They probably have a single z80 along with a decent display driver. A display driver renders the "not powerful enough for the screen" argument moot, since then the calculator wouldn't even need to store the current screen image in RAM.
754
« on: November 11, 2012, 05:07:50 pm »
Are they basing the fact that it's a z80 processor off of this? TI has begun previewing the soon to be released TI-84 Plus C Silver Edition graphing calculator. This product will be available in the Spring of 2013. The TI-84 Plus C Silver Edition has all the functionality of the best-selling TI-84 Plus family of graphing calculators - now with color and TI Rechargeable Battery. If so, I'm still skeptical, (after all, the nspire had "all the capabilities of a TI-84+" but it was not z80.) but if they got confirmation from TI elsewhere... Functionality does not imply compatibility. Keep in mind this is the marketing department.
755
« on: November 11, 2012, 03:00:10 am »
DJ, the batteries do wear out, but it's helped by the system being able to charge them. This helps extend the life as long as the battery can hold out until the next play session, which may well be 10x to 20x its labeled "life-span"
756
« on: November 10, 2012, 08:38:41 pm »
StartUp can run Apps, but yes, I'll acknowledge zStart's superiority.
757
« on: November 10, 2012, 08:55:26 am »
Well, that depends on what you're using. If you're using Black and white only, you ignore the back buffer entirely, but when using 3 or 4-level greyscale, just draw the sprite to both layers. That way, if it's black, it's all the way black, and white is all the way white.
To draw black, use pt-On.
To draw white, use pt-On then pt-Change (fill then invert)
To get a combination of the two, use pt-On with a silhouette, and use pt-change with a different sprite, which has all the white pixels as black.
758
« on: November 10, 2012, 08:02:34 am »
Who knows, maybe the 8xi images will stay at the lower resolution X.x
759
« on: November 10, 2012, 08:01:28 am »
Didn't TI make something of their own for this? zStart's main advantage, IIRC, is that it can launch from boot even after RAM clears.
761
« on: November 10, 2012, 03:00:10 am »
I can think of one workaround if you don't want an external link: Upload it to a thread, then link to the pic in the options.
762
« on: November 10, 2012, 02:58:50 am »
Easiest and fastest way to draw an inverse sprite: Draw a filled sprite (or a black square) and pt-change on top of it. Great way to get transparency
763
« on: November 10, 2012, 02:55:12 am »
Ok.
Try running this and see if webGL runs in the window that comes up.
chromium %U --ignore-gpu-blacklist
764
« on: November 10, 2012, 02:51:56 am »
run this, please.
lspci | grep VGA
765
« on: November 10, 2012, 02:48:12 am »
Well, whatever.
What video card do you have? Is it an nvidia video card?
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