#139180 - felix123 - Mon Sep 03, 2007 3:53 am
The new flashcart from AceKard will be open souce. | Quote: |
We will open all the source code of our OS and also the AKMENU and Acekard R.P.G I/O interface, so homebrew programmer could easily change or re-code the whole system.
Official site |
It includes 1GByte built in NAND flash, a mini USB port and a microSDHC slot. It will be on sale this month, price rumored to be US$65-69.
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Last edited by felix123 on Mon Sep 10, 2007 6:29 am; edited 2 times in total
#139190 - Diddl - Mon Sep 03, 2007 8:18 am
sounds interesting. but only shop which had this card was bamboo and it is sold out (and sold out forever).
#139191 - felix123 - Mon Sep 03, 2007 8:37 am
It's not on sale yet. The card sold at Bamboo is AceKard+, the 2nd generation AK product. This is the 3rd generation.
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#139315 - Mrshlee - Tue Sep 04, 2007 3:27 pm
Sounds like a great card.
Wonder if someone could code debugging over usb *some other card was advertising this.. vapour ware tho*
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#139377 - Lynx - Wed Sep 05, 2007 2:11 pm
Wow.. tons of very useful features for homebrew.. Oh wait.. that's all for piracy? oh.. Homebrew doesn't have slowdowns, need trimmed or an auto save manager? oh yeah.. that's right.. So it'll play all my illegally download warez romz perfect.. what about homebrew? Oh... DLDI.. :/
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#139379 - Diddl - Wed Sep 05, 2007 4:36 pm
| Lynx wrote: |
| Wow.. tons of very useful features for homebrew.. Oh wait.. that's all for piracy? oh.. Homebrew doesn't have slowdowns, need trimmed or an auto save manager? oh yeah.. that's right.. So it'll play all my illegally download warez romz perfect.. what about homebrew? Oh... DLDI.. :/ |
the real sensation is the promise to make ALL open source, including the cartridge firmware.
I hate piracy and so I buy all comercial games I want to play. anyhow I play this games on my slot 1 flashcard.
#139453 - tepples - Thu Sep 06, 2007 12:31 pm
| Lynx wrote: |
| oh.. Homebrew doesn't have slowdowns |
Ever tried playing video on a GnM?
Even though transparent decompression of homebrew nds.gz (or even gba.gz if you have a RAM card) would be cool.
| Quote: |
| or an auto save manager? |
Homebrew doesn't really need an auto save manager, but Game Cards do. That's why I wrote RAC. But unfortunately, the popularity of SLOT-1 cards makes it harder to write auto save managers for Game Cards. But still, DSOrganize could use a feature that synchronizes its saves with data on the PC, and if a flash card manufacturer wants to provide such a feature, cool.
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#139461 - Lynx - Thu Sep 06, 2007 3:03 pm
| Quote: |
| Ever tried playing video on a GnM? |
Come on Tepples.. You know that is exactly what they are talking about.. Slowdowns playing VIDEO on your GnM.. BUY THIS DEVICE!! It doesn't have slowndowns for VIDEO like the GnM! Why are you trying to not make it warez related?
Let's see if we can take every warez specific term and make it homebrew friendly.. Why don't you release a homebrew game with a bunch of 00's at the beginning or end.. Then, there would be a need for a trimmer..
Next, you could release a homebrew game that requires 512 EEPROM and then another that needs 2048 EEPROM and then you would need the auto save manager.
So then, it will be a 100% homebrew friendly device.. without even offering warez support.. Oh wait.. they'd still have to change the CLEAN ROMS note..
Oh well.. we can only try.
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#139464 - Diddl - Thu Sep 06, 2007 4:42 pm
@lynx: what is your problem???
if I made a hardware it has to be as good as possible. so it's as useful as possible for the customer. and would have all features are possible.
if this card would be ONLY for homebrew it would have no chance on the market, noone would buy it and this would bankrupt the manufacturer. why can we speak about R4 and not about this card?
if this card would ONLY support warez so it has no reference here! but this manufacturer promises full open source.
#139478 - Lynx - Thu Sep 06, 2007 6:19 pm
| Quote: |
if this card would be ONLY for homebrew it would have no chance on the market, noone would buy it and this would bankrupt the manufacturer. why can we speak about R4 and not about this card?
if this card would ONLY support warez so it has no reference here! but this manufacturer promises full open source. |
Datel Games N Music seems to be doing well enough to make it into major retail chains and they haven't went out of business yet..
And so far.. they are only promises.. Who knows, once some homebrewers get ahold of it, it could be the next awesome homebrew device.. or.. it could end up just another warez only card.
What I can't grasp is a gbadev.org forum moderator (yes tepples, I'm talking about you) trying to justify "features" that are warez specific. Trying to somehow minipulate them into something homebrewers would care about. I know a lot of devers are warezers.. And that's up to them.. I'm just really getting the feeling that gbadev.org needs remove the sheeps clothing and say what the site is really about.
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#139482 - Tets - Thu Sep 06, 2007 6:27 pm
| Lynx wrote: |
| Datel Games N Music seems to be doing well enough to make it into major retail chains and they haven't went out of business yet.. |
But most, if not all, of Datel's products before the Games n Music (and the Max Media Dock/Player) were already sold in major retail chains. Homebrew devices aren't their only money-maker.
#139489 - Lynx - Thu Sep 06, 2007 7:55 pm
Yeah, and most of theses companies aren't the manufacturer's either.
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#139495 - mastertop101 - Thu Sep 06, 2007 8:37 pm
Lynx : Why on earth would you want to buy a relatively crappy device (like game n music) while there are other products that can even run homebrews better ? (like videos, as tepples stated).
#139508 - tepples - Thu Sep 06, 2007 10:13 pm
| Lynx wrote: |
| Come on Tepples.. You know that is exactly what they are talking about.. Slowdowns playing VIDEO on your GnM.. BUY THIS DEVICE!! It doesn't have slowndowns for VIDEO like the GnM! Why are you trying to not make it warez related? |
Probably because I've been hanging around Wikipedia so much that I tend to assume good faith even on other web sites.
| Lynx wrote: |
| I'm just really getting the feeling that gbadev.org needs remove the sheeps clothing and say what the site is really about. |
Do you have this site confused with another GBA/DS related site that also uses the default phpBB color scheme but has a much more liberal attitude toward warez discussion, stopping just short of linking to warez?
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#139517 - felix123 - Thu Sep 06, 2007 11:40 pm
We should be praising this company for deciding to go open source, unlike some other companies that only release the source after they are pressured to.
Rumor has it the price is US$50.
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#139523 - chuckstudios - Fri Sep 07, 2007 12:58 am
Only $50? That's insanely cheap. I might pick one of these up if that's true.
#139534 - Diddl - Fri Sep 07, 2007 7:28 am
| chuckstudios wrote: |
| Only $50? That's insanely cheap. I might pick one of these up if that's true. |
I also if it's really open source. I hope Bamboo will offer this card.
#139572 - Lynx - Fri Sep 07, 2007 5:01 pm
| Quote: |
| Do you have this site confused with another GBA/DS related site that also... |
Uhh.. I don't think so, as I don't know what site you are refereing to, nor would I guess I have an account there.
As for why pick a GnM over this? How about total cost of investment? You can find the GnM shipped to your door for around $22 and your done. Everything you need is included in the package.
Now, you are saying this device is going to be $50, plus you still need to buy a MicroSD card, and potentially a MicroSD reader/writer if you don't already have one, or if it comes with one.
So, GnM vs this, in my opinion, GnM wins hands down just based on price and for the most part is homebrew friendly.
Then, you have to ask why to purchase this over the R4 or M3 Simply. Both are sold cheaper and have very good homebrew compatiblity. Keep in mind.. we are only talking about homebrew. I don't know if these devices have slowdowns for illegally downloaded warez romz or how they handle save states for those illegally downloaded warez romz either.. Nor do I care.
So, for homebrew, what is the benefit of having 1GB of onboard FLASH memory?
Also, the idea of open sourcing the firmware sounds great.. for programmers.. but, what effect does that have on the overally general population that is going to purchase this device? Does the provider release the source to v0.1 and expect the homebrew community to fix the bugs and add the features? Leaving them out of the support loop because you are running "this guys" firmware instead of the provided firmware we released, type of thing? Now that I think of it, that sounds like an awesome idea for the seller. Even if they turn around and release v0.2 unders some anonymous homebrew dever name, they would no longer have to support their own product. We've seen NeoFlash do this with their devices. Sell it with crappy firmware and never release updates.
So your only hope would be that a homebrew dever has enough interest in the device to want to keep it alive for their own purpose.. and hopefully releases updates as they go along. Just as we saw in other OSS threads, just releasing the source of a project doesn't keep it alive.
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#139615 - Mrshlee - Sat Sep 08, 2007 4:22 am
opensource firmware.. remove rom booting and release your own firmware ;)
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#139624 - chishm - Sat Sep 08, 2007 10:14 am
| Mrshlee wrote: |
| opensource firmware.. remove rom booting and release your own firmware ;) |
I can almost guarantee that they won't include the warez booting code in the source release, unless it works without patching the ROM.
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#139627 - Diddl - Sat Sep 08, 2007 10:37 am
| chishm wrote: |
| ... unless it works without patching the ROM. |
like EZ-V??
#139789 - felix123 - Mon Sep 10, 2007 6:12 am
New price info: around $65-69.
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#139817 - M3d10n - Mon Sep 10, 2007 1:47 pm
If it allows NDS files to be transfered to the internal flash memory without removing the cart, it would help development a lot. And if the USB port is usable while the DS is running, that means we could use it for debugging, or maybe booting code straight from it. That'd be almost as fast as using official dev hardware.
#139834 - Diddl - Mon Sep 10, 2007 5:23 pm
I have ordered one. I will report about the card.
#140031 - felix123 - Wed Sep 12, 2007 10:44 pm
On a forum I can't mention, an AceKard representative said:
| acekard wrote: |
About the open source, we'll releas all code inlclude menu, system, rom loader, IO interface and so on. You can do anything with these. And we'll release it as soon as we finish clarification of our code.
We're sure that it'll explore more potential of AK RPG.
You can send a email to acekard#gmail.com with key word in tittle of "Ak RPG Development" if you wanna develop on AK RPG or you have some good ideas about it.
Thank you. |
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#140383 - Sweater Fish Deluxe - Sat Sep 15, 2007 11:42 pm
Later in that same topic on the forum that no one dares mention, the Acekard representative asked for input on how best to go about releasing the sources, which I also think is a good move instead of just having some download on their site.
If the set up a SVN/CVS for the firmware as some people in that thread already suggested, it could solve all the "wild anarchy" that so many people seem to be scared of with open source stuff. Hopefully, if they do set it up that way, their own developers (if there are any) will be participating in the same SVN. Acekard could just take regular snapshots of the stable build to have for distribution on their site as the official firmware.
If this is well done (and so far there's absolutely no reason to assume that it won't be), it could turn out to be really amazing.
...word is bondage...
#141124 - felix123 - Sat Sep 22, 2007 10:29 am
The code is released. And they did release the whole thing, including the rom loader.
| Quote: |
AK RPG Open Source Release v4.01
2007.09.21
Where can i get the open source
You can visit our official website www.acekard.com to download the latest source code and we also will supply a SVN server for version controlling.
Please find the more detail about SVN on our website. Thank you.
...
About the update and feature adding
According to the license, you can use these source code freely but keep the license.
We'll continue to update our OS menu. And if you add a new feature and hope merge to the official release, please contact us with acekard at gmail.com.
Any issue please post thread at www.acekard.com/bbs or email us with the title "Issue of AK RPG Development".
Thank you and enjoy it.
|
It uses devkitpro r20, libnds20070503 and MSYS. The license is MIT.
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#141133 - Diddl - Sat Sep 22, 2007 12:26 pm
very fine, I hope my card comes soon.
#141155 - tepples - Sat Sep 22, 2007 6:37 pm
| felix123 wrote: |
| The code is released. And they did release the whole thing, including the rom loader. |
Does anybody plan on buying this and adapting code from its rom loader to make some sort of argv[0] replacement?
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#141156 - Diddl - Sat Sep 22, 2007 7:11 pm
| tepples wrote: |
| Does anybody plan on buying this and adapting code from its rom loader to make some sort of argv[0] replacement? |
I have buyed one. *argv[] would be nice but not possible for me to change the C initialization stub code.
If you want to make tests I will do it for you.
#141266 - Mrshlee - Sun Sep 23, 2007 5:42 pm
Planning on ordering a Acekard R.P.G 8G once I can get some spare cash.
Hope the unit quality is worth it.
Wintermute was talking about argv in R21.
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#141275 - chuckstudios - Sun Sep 23, 2007 7:14 pm
He wasn't just talking about it, he implemented it. I saw it in CVS one time when I was browsing out of boredom.
#141290 - Diddl - Sun Sep 23, 2007 8:50 pm
| chuckstudios wrote: |
| He wasn't just talking about it, he implemented it. I saw it in CVS one time when I was browsing out of boredom. |
how is it working? like EFS self searching and patching?
#141305 - chuckstudios - Sun Sep 23, 2007 10:51 pm
It works by the launcher putting certain values in a memory region. The app then looks in that memory region, and if it notices the correct header, reads the values.
#141924 - Diddl - Mon Oct 01, 2007 6:43 pm
Today I got my ACEkard RPG.
The card is working very fine and it is very easy. All NDS files I have tested working without problems including sensible things like Wolf3d, so I'm sure the DLDI are working correctly.
The menu is very fast and simple to use. You can copy, cut, delete and paste files. Also between Flash memory (internal mem) and micro SD (external mem). You can start slot 2 (testet with supercard lite).
Upper Screen contains a calendar and a watch.
I'm very happy with this card. I'm sure it is the best availlable one in this moment!
edit: a nice feature for developers, - it is possible to connect USB while cartridge is inerted in slot 1. But USB drive is only working if NDS is switched off. But you can upload a compiled NDS, switch on and test, switch off and upload ...
#141947 - Dood77 - Tue Oct 02, 2007 3:32 am
| Diddl wrote: |
| edit: a nice feature for developers, - it is possible to connect USB while cartridge is inerted in slot 1. But USB drive is only working if NDS is switched off. But you can upload a compiled NDS, switch on and test, switch off and upload ... |
Hopefully this can be overcome and isn't strictly a hardware issue.
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#141949 - OSW - Tue Oct 02, 2007 5:15 am
i received one too. i like how the menu is quite fast and easy to browse.
all homebrew tested worked perfectly EXCEPT for dslinux, which kind of annoyed me...
it's strange because when i have my ezflash in slot two, and i boot dslinux from AK menu, the top screen just contunes to scroll with text very fast ( i think it's showing hex values)
when i take my ezflash out and boot it, the text scrolls down for a moment then stops on some error. my brother has my DS right now so i'll have to check again to see exactly what the error is.
oh and i was running it from microsd, i might try it from the nand too, or a copy over.
#141959 - sonny_jim - Tue Oct 02, 2007 1:20 pm
OSW, could you provide a few more details about the failure with DSLinux you had? Specifically what builds you have tried (NDS and DLDI?) and what DLDI patch and software you used?
It definitely sounds like it's crashing on boot. It's a shame because it would of been nice to have an open source card to go with an open source OS.
EDIT: Also could anyone confirm whether it works as a Nopass/Passme? I'm trying to get the information on this page up to date and correct
#141960 - Lynx - Tue Oct 02, 2007 1:51 pm
Lynx's Review
DSLinux kernel panics on boot. I agree the hardware looks nice (feels of quality), but we still have to wait and see if you get your money's worth based on what the homebrew community can make of the product. Out of the box, I don't see ANY benefit over other cheaper hardware on the market.
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#141971 - OSW - Tue Oct 02, 2007 5:58 pm
each to his own, but i actually like the two default skins.
panicking on boot, that probably is the best way to describe it.
i've only tested from microsd, not the nand, although it seems unlikely it would make a difference.
works as a passme, boots my ez4 fine.
i thought heard that R4 had problems with some palib homebrew... am i mistaken?
#141979 - felix123 - Tue Oct 02, 2007 7:44 pm
Palib fixed the R4 problem some time ago.
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#141987 - Lynx - Tue Oct 02, 2007 8:42 pm
| OSW wrote: |
| each to his own, but i actually like the two default skins. |
Maybe it's my age.. I'm old.
| Quote: |
| panicking on boot, that probably is the best way to describe it. |
Yeah, since is says kernel panic right on the screen. ;)
| Quote: |
| i've only tested from microsd, not the nand, although it seems unlikely it would make a difference. |
Tried both, it doesn't.
| Quote: |
| i thought heard that R4 had problems with some palib homebrew... am i mistaken? |
Yeah, as felix123 said, it was a PAlib problem, not the R4's.
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#142015 - HyperHacker - Wed Oct 03, 2007 3:30 am
So does this card stick out of the slot? It sounds really nice but I hate cards that stick out. :-/
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#142017 - OSW - Wed Oct 03, 2007 4:44 am
it doesn't stick out, same size as a normal gamecard and other recent flashcards.
but the mould seems a touch too thick, so that it doesn't slide in perfectly smoothly.
and i didn't realise it actually said kernel panic. hehe. good on you for pointing it out.
#142018 - Lynx - Wed Oct 03, 2007 5:40 am
HyperHacker, you can see a pic of it in the DS on my review. As for being thick, it must be another one of those "Depends on the DS" things.. as it fits fine in my DS-Lite and the Phat I have sitting here.
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#142035 - Rajveer - Wed Oct 03, 2007 4:21 pm
| Diddl wrote: |
| edit: a nice feature for developers, - it is possible to connect USB while cartridge is inerted in slot 1. But USB drive is only working if NDS is switched off. But you can upload a compiled NDS, switch on and test, switch off and upload ... |
This is exactly what I wanted with my DS-X, except that whenever you want to turn the NDS on you have to take out the USB cable which gets long. Do you have to do it with the Acekard?
| Dood77 wrote: |
| Hopefully this can be overcome and isn't strictly a hardware issue. |
Why would this be an issue of the card? Isn't this a good thing?
Last edited by Rajveer on Wed Oct 03, 2007 10:58 pm; edited 1 time in total
#142036 - NorQue - Wed Oct 03, 2007 4:30 pm
Would anyone who already has one mind posting a hint on where to get one? The only webshop I can find is out of stock currently and it reads like they didn't get more than 50 pieces in the first place.
Maybe link to the thread in "Retailer Feedback" or open a new one there, as direct links aren't allowed by a strict interpretation of the rules...
#142048 - Diddl - Wed Oct 03, 2007 9:03 pm
| Rajveer wrote: |
| Do you have to do it with the Acekard? |
No, USB cable is always connected. If NDS is off --> USB mode, after switching NDS on USB mode is down and vice versa.
#142085 - Lynx - Thu Oct 04, 2007 4:44 am
Hmm.. do you have a MicroSD card inserted? I'm running a DS Phat with just the acekard RPG (no MicroSD) in slot-1. I attached the USB cable and inserted the card into my DS. I then plugged the USB cable into the back of my laptop. It found the device and a few minutes later said it was available. I then browsed to it to make sure I could read it fine.
I then turned on my DS and it boot to the previous folder (svsip) with a single .nds file in it. At the same time, I tried browsing the folder and was able to. I created a .txt file and was able to save it. But, at some time, the DS locked up. I then turned the DS off and back on, and it was no longer able to load back to a menu.
I removed the acekard from the DS and connected it back to the laptop. I tried doing a scandisk on it, and it hung half way through. It appears the file system is corrupt, but it doesn't seem to want to repair it.
So, I reformatted it, and copied the system files back onto it. And it began to work as usual.
So, it looks like the hardware can handle it.. in theory. Every time I browsed the device while the DS was on, it corrupted the file system.. But, that doesn't mean the USB port can't be used for communication. I just don't think a computer and the DS can access the file system at the same time.. At least, not with the current firmware.
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#142093 - OSW - Thu Oct 04, 2007 8:37 am
tried some more homebrew today and found out nesDS isn't working /_\
it loads and displays whats in the root directory, but it's frozen or something, i can't select anything.
#142097 - theli - Thu Oct 04, 2007 9:57 am
by the way anyone who has this card and microsd ...
using dldi which one is visible to homebrew?
#142112 - Diddl - Thu Oct 04, 2007 5:11 pm
| theli wrote: |
by the way anyone who has this card and microsd ...
using dldi which one is visible to homebrew? |
I use this card with microSD. ACEkard makes auto DLDI patching. If you start a NDS homebrew on SD it is patched automatically with SD DLDI and Homebrew see's directory from SD. If NDS homebrew is startet from Flashmem it is automatically patched with Flash DLDI and homebrew see directory of flashmem.
I have newest firmware and USB udisk is definitively switch off after NDS switch on and vice versa. Maybe this new firmware made this cause filesystem corruption problem?
#142113 - OSW - Thu Oct 04, 2007 5:24 pm
it seems likely you could also just rename the 2 dldi files if you for example wanted all your data on the nand but boot all the nds homebrew from microsd.
#142115 - Diddl - Thu Oct 04, 2007 5:35 pm
yes, and it is very simple to use both, internal flash and external SD same time. a small modification in libnds does it. the firmware sources are a good example ...
#142124 - HyperHacker - Thu Oct 04, 2007 8:54 pm
| OSW wrote: |
tried some more homebrew today and found out nesDS isn't working /_\
it loads and displays whats in the root directory, but it's frozen or something, i can't select anything. |
That's what happens if the ARM7 binary doesn't load correctly.
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#142244 - Dood77 - Sat Oct 06, 2007 8:47 pm
| Rajveer wrote: |
Why would this be an issue of the card? Isn't this a good thing? |
Sorry, let me clarify:
| Diddl wrote: |
| edit: a nice feature for developers, - it is possible to connect USB while cartridge is inerted in slot 1. But USB drive is only working if NDS is switched off. But you can upload a compiled NDS, switch on and test, switch off and upload ... |
| Dood77 wrote: |
| Hopefully this can be overcome and isn't strictly a hardware issue. |
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Supercard: miniSD, Kingston 1GB, Kingston 2GB
Ralink chipset PCI NIC
#142245 - Lynx - Sat Oct 06, 2007 9:10 pm
Can someone look at the current firmware and verify if we have full read/write access to the USB port of the hardware? Being that I was able to read/write to the FAT while the DS is on, that proves it isn't a limitation of the hardware. That is, if we can make the USB port a communication interface, and not just a PC to Flash interface.
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#142257 - Dood77 - Sun Oct 07, 2007 12:28 am
| Lynx wrote: |
| Can someone look at the current firmware and verify if we have full read/write access to the USB port of the hardware? Being that I was able to read/write to the FAT while the DS is on, that proves it isn't a limitation of the hardware. That is, if we can make the USB port a communication interface, and not just a PC to Flash interface. |
Hmm, the possibilities...
TCP/IP over USB?
USB host? (Flash drives, DS-to-DS with USB...)
USB game controller?
USB mic?
USB web camera? (With applicable accessory, of course)
USB Missle Launcher?
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Original DS Phat obtained on day of release + flashme v7
Supercard: miniSD, Kingston 1GB, Kingston 2GB
Ralink chipset PCI NIC
#142266 - Diddl - Sun Oct 07, 2007 10:06 am
Missile Launcher is great, we "use" this at work ...
#142444 - HyperHacker - Tue Oct 09, 2007 5:42 am
I thought of all sorts of fun things that could be done with a USB port (I was thinking Action Replay DS), but I haven't got around to investigating how one might use the port. :-/
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#142483 - Lynx - Tue Oct 09, 2007 3:27 pm
It can't be a USB host port without a hardware mod. Hosting require more voltage than the DS provides. The same reason DSerial can't be a host. You'd have to carry a second battery around with you.
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#142528 - Dood77 - Wed Oct 10, 2007 2:10 am
You know I saw something awhile back that enabled usb host on a TI-84 calculator, my friend had a 1GB flash drive duct-taped to his, lol.
Wasn't aware about battery usage though, I should ask him how long his batteries last.
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Supercard: miniSD, Kingston 1GB, Kingston 2GB
Ralink chipset PCI NIC
#142582 - Lynx - Wed Oct 10, 2007 4:23 pm
USB Host ports provide power to the device plugged in. The standard requires 5V. The DS is only 3.3 volts. So, to meet the USB standards for a host, you need an additional battery that is capable of providing 5V to the device. If his calculator runs on 5+ V then he can use the internal battery. The additional current drain on the battery depends on the devices demands.
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#142593 - cornaljoe - Wed Oct 10, 2007 6:11 pm
I believe all the TIs of my time 83-92 took 6V(4 AAA batteries).
#142607 - coolmos - Wed Oct 10, 2007 8:30 pm
You never heard of a step-up or boost converter? It's not that difficult or expensive to get 5V from 3.3V. There is of course the question of battery life and efficiency, but it's not impossible.
#142613 - HyperHacker - Wed Oct 10, 2007 9:15 pm
Can you do it without blowing a fuse in the DS though?
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#142626 - Lynx - Wed Oct 10, 2007 10:53 pm
| Quote: |
| You never heard of a step-up or boost converter? |
Of course I have, and I also understand how they work. But, energy is not gained nor destroyed, only transformed. P=IE no matter how you fiddle with the numbers. USB hosts can provide 500mA at 5V which = 2.5 Watts. So, the DS would have to be able to provide 760mA at 3.3V to provide 500mA at 5V. And that doesn't take into account any additional draw the circuit may create.
So, next issue is the built in fuse and it's rating. Remember, it needs to be enough to supply 760mA to the USB host port as well as run the DS itself. You'll find this very handy page:
DS Power Consumption
Which states that worste case, the DS consumes around 300mA. Not including memory expansion paks or the like. So the internal fuse will have to be rated above 1A continuous draw.
Anyone willing to risk their F2 to see if the DS can in fact provide 1A continous draw?
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#142730 - MrD - Fri Oct 12, 2007 12:21 pm
Sorry to be a bit of a bore, but does it work with Lemmings DS? :)
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Not active on this forum. For Lemmings DS help see its website.
#142959 - OSW - Mon Oct 15, 2007 3:51 pm
it works.
#147849 - jrobot - Sat Dec 29, 2007 1:43 am
anyone with this card mind opening it up to take a look at the hardware? specifically what uC/fpga is used, thx