Subject:
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Re: Mindstorms NXT programming languages
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 13 Jan 2006 17:58:45 GMT
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Viewed:
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2030 times
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In lugnet.robotics, steve <sjbaker1@airmail.net> wrote:
> Yes! Easily.
>
> I want to load images from a camera and process them in
> realtime. To do that, I'd like to take a pre-existing
> image processing library and compile it for the NXT.
>
> That could EASILY consume all 256Kb of flash - and the
> image itself would need vastly more RAM than the NXT
> has. That's not in any way an unreasonable thing to
> expect to be able to do in an era of $8, 64Mb thumb drives
> and teeny-tiny cameras that fit into a cellphone and cost
> $20. It's something that robots need to be able to do.
>
> You can buy a 16MB CompactFlash card for your camera for $6,
> a 32MB card for $7 and a Kodak 64MB card for $8. Memorex
> make a 128MB card for $11. And we're going to spend $250
> and be stuck with ONE QUARTER OF A MEG. Can you really
> tell me that you wouldn't have preferred to spend $261 and
> had a thousand times more memory than you're going to get?
Er ...
Is there an apples and oranges problem here? You are referring to serial memory
devices used for data storage versus broad side FLASH which permits the CPU to
execute from it.
If the CPU were to be crippled by executing from a SD memory device, I think
you'd start complaining about the speed at that point.
So how much does 32 bits wide of 64Mb of FLASH cost?
JB
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Message has 2 Replies:
 | | Re: Mindstorms NXT programming languages
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| (...) There is certainly a huge difference - but given that the NXT has RAM and 'broad-side' Flash on-chip, the bulk of the flash only has to function as backing storage...like a disk drive. (...) You can page executable stuff into RAM as needed. (...) (18 years ago, 13-Jan-06, to lugnet.robotics)
| | | Re: Mindstorms NXT programming languages
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| (...) I think, John, you've finally started us down the right path to (hopefully) put this whole topic to bed. What we're talking about here isn't necessarily a difference between serial FLASH and parallel FLASH. What we're talking about is the (...) (18 years ago, 13-Jan-06, to lugnet.robotics)
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Message is in Reply To:
| | Re: Mindstorms NXT programming languages
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| (...) Yes! Easily. I want to load images from a camera and process them in realtime. To do that, I'd like to take a pre-existing image processing library and compile it for the NXT. That could EASILY consume all 256Kb of flash - and the image itself (...) (18 years ago, 13-Jan-06, to lugnet.robotics)
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