Here's the image that was shown at the Expo about the next Propeller's pin modes (this is on a per-pin basis, with any number of pins within a bank being simultaneously configurable via an assembly-language instruction):
BUT to next UPE - Can You have any people to made any Video with that presentation
Regards
Christoffer J
Ps. To all of us that can't not attend that nice UPE's
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔ Nothing is impossible, there are only different degrees of difficulty. For every stupid question there is at least one intelligent answer. Don't guess - ask instead. If you don't ask you won't know. If your gonna construct something, make it·as simple as·possible yet as versatile as posible.
My fault. The original intention was to have live streaming video. I was re-assured locally that this would be no problem... well it was a problem that there simply wasn't time to fix. By the time we found out... it was already too late. I missed the first part of Chip's presentation, because my son decided it was time to go home. The last half... which I did see was very similar to the published materials in the webcasts and prior UPEs.
I think it would be ideal to have two way communications from various Propeller hot spots around the world... and I am going to try to make sure that is possible and happens at the next UPEC.
We are almost at the point where we need two rooms... so having video available in secondary rooms will also be helpful.
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔ Nothing is impossible, there are only different degrees of difficulty. For every stupid question there is at least one intelligent answer. Don't guess - ask instead. If you don't ask you won't know. If your gonna construct something, make it·as simple as·possible yet as versatile as posible.
CSmith said...
That's what I heard too, though much of the time during Chip's presentation I was slack-jawed with my head tilted and eyes glazed over...
I spent about half of his presentation listening with interest, and the other half of it being amazed that I understood quite a bit of what he was talking about.
It would have been 100% Greek to me a year ago, but last Saturday it made perfect sense - and I even knew what most of the acronyms he used stood for. And the stuff I didn't understand, I think I could figure out if I put my mind to it.
I've paid a LOT of tuition in my lifetime, and I recognize a valuable free education when I see one. Don't tell them this, but that $100 Prop education kit is worth about $4000.
My son could not wait to get home and dig back into the education kit. Since he is autistic... his time to integration is anyone's guess. He certainly doesn't understand what he is reading in the way that you or I understand it. But he loves to read the book... there is a rhythm and reason to it that makes sense to his brain. He will eventually understand most of it... his ability to abstract has a binary quality.· He can go along not understanding the simplest things for the longest time... and then all of a sudden he understands it all. In school...he went from 4th grade math skills to 12 grade math skills in one year... because he took a computerized course at the local college (IVCC).
Chip's pin modes open up a whole lot of possiblilities... If I understood it right, the HHH and LLL values define the source impedance or current source level for high and low states. You can have high be a 10kOhm source and low be a 10uA sink, if you wanted...
I'm still getting a handle on it myself... I think it means that you don't need external resistors for a lot of things... I think that one could do an I2C bus without external resistors now...
With Prop1, when you set a pin high the pin voltage is actually 3.3 Volts, or something is terribly wrong... But now, if you define a 10kOhm source impedance and output a 1, then the input could be 0 if something else loads it down...
Thanks... It is hard to figure out exactly what little fact I have missed along the way that would make this sensible to me.
Maybe I should run a contest and the guy who pinpoints the void in my head wins[noparse]:)[/noparse] Next time I run into the issue of impedence matching... I won't ignore it[noparse]:)[/noparse]
Good for you.
Robin and I spent some time driving around Chicago(around and around)
Had to phone a relative to rescue me.
He told me to just pull over, he caught a cab and found me.
I am now in Champlaign IL. Plan to be ho me Wednesday PM.
WOW; Just found out the propscope I ordered from Ken may be home before I am.
I was just thinking about Chip's talk, the part where he discussed a new SDRAM mode for the pins (I'm not sure I understood what he meant) and how he was thinking about using SDRAM for video display, but the problem was that there was not much blanking time to update the display.
Well, I just wanted to say that I've looked into this too and I think the best solution is to use two SDRAM chips, to double buffer the display... Show one, while writing the other. Also, I think it's possible to copy one SDRAM to the other during one frame for cases where only small changes are needed...
I've read that PC video cards don't use dual-port memory any more, they just use a lot of regular memory...
Just one other thought... There are now 80 I/O pins for Prop2. I was thinking that all the functions included in each pin are kinda overkill for a lot of things I have in mind and just plain digital I/O would be fine.
But, it just occurred to me that you could use the various source impedances and a little external logic to decode the source impedance from 1 pin into a couple digital I/O... Creating two digital outputs from 1 pin... At least, I think that would work...
Rayman said...
Just one other thought... There are now 80 I/O pins for Prop2.
Wow 80 pins? Pretty exciting!
I saw the references to SDRAM and was hoping more details of that would emerge.
With 80 pins one could hook up practically anything at 3.3V ... So many possibilities [noparse]:)[/noparse]
Embedded Linux on Prop2 could really happen and actually be useful !
Cheers [noparse]:)[/noparse]
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
May the road rise to meet you; may the sun shine on your back.
May you create something useful, even if it's just a hack.
Rayman,
PC video cards haven't used "dual port" memory in a long time. The higher end cards just have really wide busses to the memory (256bit to 512bit), and that memory is GDDR3-5 clocked really high. The top end cards have 150-200GB/s memory bandwidth. Considering that a 2560x1600x32bit frame buffer (one of the largest PC modes available) is only ~16MB, those top cards could read or write the full frame buffer 10000 to 13333 times per second (if they were doing nothing else).
Anyway, I'm really looking forward to pushing the video capabilities of the Prop2. Especially with the texture mapping stuff. I'll be happy if I can get a 720p display going at a reasonable refresh rate on the Prop2, I suspect it'll be capable of more than that though.
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Comments
John Abshier
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Chip Gracey
Parallax, Inc.
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Chip Gracey
Parallax, Inc.
Thanks for that.
BUT to next UPE - Can You have any people to made any Video with that presentation
Regards
Christoffer J
Ps. To all of us that can't not attend that nice UPE's
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Nothing is impossible, there are only different degrees of difficulty.
For every stupid question there is at least one intelligent answer.
Don't guess - ask instead.
If you don't ask you won't know.
If your gonna construct something, make it·as simple as·possible yet as versatile as posible.
Sapieha
Post Edited (Sapieha) : 5/17/2010 9:32:05 PM GMT
My fault. The original intention was to have live streaming video. I was re-assured locally that this would be no problem... well it was a problem that there simply wasn't time to fix. By the time we found out... it was already too late. I missed the first part of Chip's presentation, because my son decided it was time to go home. The last half... which I did see was very similar to the published materials in the webcasts and prior UPEs.
I think it would be ideal to have two way communications from various Propeller hot spots around the world... and I am going to try to make sure that is possible and happens at the next UPEC.
We are almost at the point where we need two rooms... so having video available in secondary rooms will also be helpful.
Rich
Thanks
Regards
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Nothing is impossible, there are only different degrees of difficulty.
For every stupid question there is at least one intelligent answer.
Don't guess - ask instead.
If you don't ask you won't know.
If your gonna construct something, make it·as simple as·possible yet as versatile as posible.
Sapieha
It would have been 100% Greek to me a year ago, but last Saturday it made perfect sense - and I even knew what most of the acronyms he used stood for. And the stuff I didn't understand, I think I could figure out if I put my mind to it.
I've paid a LOT of tuition in my lifetime, and I recognize a valuable free education when I see one. Don't tell them this, but that $100 Prop education kit is worth about $4000.
To me, the education kit is priceless.
Rich
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
My Prop Info&Apps: ·http://www.rayslogic.com/propeller/propeller.htm
My Prop Products:· http://www.rayslogic.com/Propeller/Products/Products.htm
Could you elaborate a little. I have no idea why this is important[noparse]:)[/noparse]
Rich
With Prop1, when you set a pin high the pin voltage is actually 3.3 Volts, or something is terribly wrong... But now, if you define a 10kOhm source impedance and output a 1, then the input could be 0 if something else loads it down...
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
My Prop Info&Apps: ·http://www.rayslogic.com/propeller/propeller.htm
My Prop Products:· http://www.rayslogic.com/Propeller/Products/Products.htm
Chris
Thanks... It is hard to figure out exactly what little fact I have missed along the way that would make this sensible to me.
Maybe I should run a contest and the guy who pinpoints the void in my head wins[noparse]:)[/noparse] Next time I run into the issue of impedence matching... I won't ignore it[noparse]:)[/noparse]
Thanks
Rich
Good for you.
Robin and I spent some time driving around Chicago(around and around)
Had to phone a relative to rescue me.
He told me to just pull over, he caught a cab and found me.
I am now in Champlaign IL. Plan to be ho me Wednesday PM.
WOW; Just found out the propscope I ordered from Ken may be home before I am.
Roger
Here's the link!
picasaweb.google.com/jeffledger/UPEC201002?authkey=Gv1sRgCLKp0LXavManlwE#
I'm also assembling a video of sorts, will post soon.
OBC
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Visit the: PROPELLERPOWERED SIG forum kindly hosted by Savage Circuits.
Well, I just wanted to say that I've looked into this too and I think the best solution is to use two SDRAM chips, to double buffer the display... Show one, while writing the other. Also, I think it's possible to copy one SDRAM to the other during one frame for cases where only small changes are needed...
I've read that PC video cards don't use dual-port memory any more, they just use a lot of regular memory...
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
My Prop Info&Apps: ·http://www.rayslogic.com/propeller/propeller.htm
My Prop Products:· http://www.rayslogic.com/Propeller/Products/Products.htm
But, it just occurred to me that you could use the various source impedances and a little external logic to decode the source impedance from 1 pin into a couple digital I/O... Creating two digital outputs from 1 pin... At least, I think that would work...
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
My Prop Info&Apps: ·http://www.rayslogic.com/propeller/propeller.htm
My Prop Products:· http://www.rayslogic.com/Propeller/Products/Products.htm
I saw the references to SDRAM and was hoping more details of that would emerge.
With 80 pins one could hook up practically anything at 3.3V ... So many possibilities [noparse]:)[/noparse]
Embedded Linux on Prop2 could really happen and actually be useful !
Cheers [noparse]:)[/noparse]
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
May the road rise to meet you; may the sun shine on your back.
May you create something useful, even if it's just a hack.
The UPEC was in Ottawa? Canada?
Smock. I'm just across the river... I did not see any announcement.......missed it... darn...
Hey, I might ask you to be my teacher...
You live in Ottawa?, if so, is there a group or some sort, get together..?
Cheers
Yosh (Gatineau)
Ottawa, IL, USA not Canada
ROFLMAO !!!
Darn big river to go accross...
Yosh
PC video cards haven't used "dual port" memory in a long time. The higher end cards just have really wide busses to the memory (256bit to 512bit), and that memory is GDDR3-5 clocked really high. The top end cards have 150-200GB/s memory bandwidth. Considering that a 2560x1600x32bit frame buffer (one of the largest PC modes available) is only ~16MB, those top cards could read or write the full frame buffer 10000 to 13333 times per second (if they were doing nothing else).
Anyway, I'm really looking forward to pushing the video capabilities of the Prop2. Especially with the texture mapping stuff. I'll be happy if I can get a 720p display going at a reasonable refresh rate on the Prop2, I suspect it'll be capable of more than that though.
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Check out the Propeller Wiki·and contribute if you can.