Author Topic: Ndless 1.7 officially released  (Read 13987 times)

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Offline DJ Omnimaga

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Re: Ndless 1.7 officially released
« Reply #30 on: December 22, 2010, 11:03:59 pm »
On the topic of the screen, how much space does each pixel take in memory? Are they nibbles? (Since you got 16 level grayscale)

Offline ExtendeD

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Re: Ndless 1.7 officially released
« Reply #31 on: December 23, 2010, 04:36:19 am »
Ndless.me with the finest TI-Nspire programs

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Re: Ndless 1.7 officially released
« Reply #32 on: December 23, 2010, 12:21:07 pm »
Cool, thanks for the info. I wasn't sure. I knew the screen had a 4 bit grayscale depth but I wasn't sure if each pixel or the screen had any other property or something else causing the screen memory to take more space. On some Casio monochrome calculators, picture data takes between 2 and 4 bit per pixel.

Offline calc84maniac

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Re: Ndless 1.7 officially released
« Reply #33 on: December 24, 2010, 08:19:42 pm »
Cool, thanks for the info. I wasn't sure. I knew the screen had a 4 bit grayscale depth but I wasn't sure if each pixel or the screen had any other property or something else causing the screen memory to take more space. On some Casio monochrome calculators, picture data takes between 2 and 4 bit per pixel.
It actually is possible to change the data size with the Nspire's driver, though there are still 15 colors total available (in the 16-bit color values, only 4 bits are used). You can select 1, 2, 4, 8, or 16 bits per pixel in the buffer. If the bits per pixel is less than 16, the pixel values are used to look up the 16-bit color values from an array contained within the driver. If the bits per pixel is 16, then the pixel values are used as color values (no array involved). Thus, if you want to reduce the buffer size, you can use 1-bit or 2-bit mode (which gives you 2 or 4 colors available)
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Re: Ndless 1.7 officially released
« Reply #34 on: December 26, 2010, 05:31:15 pm »
Ah that's nice. :D

Offline fb39ca4

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Re: Ndless 1.7 officially released
« Reply #35 on: December 26, 2010, 08:31:21 pm »
Though it would be unlikely you would need to do that, remember, the nspire has 32mb of RAM, for TI's bloated OS :P

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Re: Ndless 1.7 officially released
« Reply #36 on: December 26, 2010, 08:36:52 pm »
Though it would be unlikely you would need to do that, remember, the nspire has 32mb of RAM, for TI's bloated OS :P

If I am correct, 32Mb of ROM, and 16Mb of RAM.
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Re: Ndless 1.7 officially released
« Reply #37 on: December 26, 2010, 09:00:11 pm »
Nope, it's 32mb ram. I just checked hackspire.

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Re: Ndless 1.7 officially released
« Reply #38 on: December 26, 2010, 09:03:09 pm »
Thanks.
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Re: Ndless 1.7 officially released
« Reply #39 on: December 26, 2010, 09:32:03 pm »
Though it would be unlikely you would need to do that, remember, the nspire has 32mb of RAM, for TI's bloated OS :P
Yes, but smaller buffers can increase performance, even if only because the CPU only has 8KB of data cache. Not to mention, there is not as much data to process.
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Re: Ndless 1.7 officially released
« Reply #40 on: December 27, 2010, 04:10:27 pm »
Nope, it's 32mb ram. I just checked hackspire.
Yeah I think it's definitively 32 MB. If I remember the entire OS is copied into RAM on booting. If you had 16 MB OS 2.1 wouldn't even fit at all. O.O