You probably could use the beagleboard as long as you can compile and run cgminer on it. If you have one then give that a try. That SMD adapter is pretty nice and not too costly (except for shipping). It would be good for breadboarding. It's the only one I've seen that has thermal vias - good idea. You could likely put a heat sink on back but they don't show the back. If you wanted to play around with an ASIC you could likely stick it on that and hook it direct to the beagleboard I/O headers to experiment. Just out of curiosity(off a hardware noob), What would be the minimum requirements to talk to a single Avalon ASIC? Is my understanding of the ASIC correct : You provide specified voltages to the specified pins. Then you can talk to the chip using any serial interface? Or is it not as simple as that? Say I have a beagle port, or raspi or computer with a serial port, or whatever. 1) Avalon ASIC X 1 2) SMD-Adapter x 1 = EUR 7 plus some labor costs to have asic sodered onto it 3) Breadboard x 1 = < $10 4)  (voltage transformers/resistors/capacitors) 5) Time - priceless Is it sane to assume that for a DYI purposes for a single chip, I could interface it to a serial port for $30 ? Need some extra for labour since the QFN soldering would need to be outsourced. |
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Please let me rest for several hours before I dare to do anything important.
The blades will be shipped within 24 hours after the payment/address collection time as promised. The tracking numbers will be provided as long as they are generated, like the last auction.
Hey friedcat, will there be any more auctions soon? Thanks going by the last one, i'd be surprised if there were another before the weekend. The word on the street was that hes gonna auction them cute little single chip USB things today.... But then I dont know the source of that. <irony>Probably just a rumour echoed by multiple people.</irony> |
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Can you forward me the link to the Avalon page?
https://en.bitcoin.it/wiki/Avalon#Chip_SpecificationTechnology Summary:
TSMC 0.11- micron G process
5 Metal
Core Voltage: 1.2 V
I/O Voltage: 3.3 V
Core Frequency: 256+ MHz
Number of Pads: 48
8 Data
40+1 Power
Package Type: QFN48 -0.5 Pitch
Packaged Chip Size: 7 mm x 7 mm
Chip Interface
Data Pins (8 in total):
Clock i
Serial Data In [2] i
Serial Data Out [2] o
Serial Data Bypass [2] o
Reserved [1] - |
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PS: that is why i am still considering mineral oil as an option. It is bit messy but it is just nonesence for me to pay 10+USd for a pice of metal
You would still need a way to cool the oil. after days(or hours) of continuous operation, oil would start getting hot... |
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Stupid question: Can i use the 16 chip board with fewer than 16 chips on it? Or it needs all 16 in place to be able to work?
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Isint GPU memory external RAM? Or is that a whole different ballgame cause of high clock frequency?
GPU have L1/L2 cache hierarchy just like a CPU. SCRYPT only performs well if it is small enough to fit into on-chip memory. If you have to go off-chip, it's going to be a turd. But yes, most graphic cards have seemingly endless amounts of external memory. The SCRYPT configuration used in Litecoin needs 128KB, which fits easily into onchip cache in a CPU/GPU, and into onchip block memory on many (not all) FPGA. I dont think so... I use cgminer on my 7950 with :- --thread-concurrency 25768 Meaning its using 25768 * 128 KB of memory (roughly 3.14 GB) . On increasing the concurrency, cgminer fails on startup saying im trying to allocate more memory than available. That or ive misunderstood the purpose off thread-concurrency |
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Connecting high speed DDR ram to an FPGA is not a big deal.
I was under the impression that the kind of memory latency necessary (extremely low) is only possible with the most expensive types of DDR chips. Let's put it this way: if you actually need external memory to run SCRYPT as used in Litecoin (you don't), then yes it is going to be a total turd performance wise. It doesn't matter what chip you put out there. Isint GPU memory external RAM? Or is that a whole different ballgame cause of high clock frequency? |
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turtle83; 30; 2.58; 14ru6sM4aHxeJ3PicewsMvaJpSpAHb7vyq
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do I read this correct that on 2nd batch still has ~2500 chips left? (today) on 18th second batch had ~2500 chips left on 19th second batch was sold out. so as per today second batch is still sold out.... that is unless avalon ships > 10k chips in the batch  |
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Estimated lead time is 8-12 weeks.
Even for PBC only option? or are those ready to ship? |
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I don't know much about embedded/FPGA/ASIC, but I could help out with higher level tasks. testing, Linux things, automation, coding... and i always wanted to get into hardware hacking... so this is a good opportunity.
I missed out on the whole bitcoin wave, and since last few weeks I have been procrastinating on the concept of crypto(and p2p) currency -- not to get rich quick or something... but more so for political reasons.
Will watch the progress of this project for something I can contribute.
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kingcoin -> for now I can only say thank you. I have to talk with some potential investors in the project, so for now I can't pay you for your help.
No problem. I did not expect to get payed. These are very expensive FPGA's. In general the cheaper FPGA's will usually get you higher H/s/$. But of course I don't know what kind of deal you can get. I would be very curious to know what khash/s it could achieve for LTC. Nobody has (atleast in public) claimed to be mining LTC with FPGA. I dont know much about FPGA or embedded programming, but from what i read, scrypt is very sensitive to the amount of fast RAM available to the cores.. The new expensive FPGAs apparently have them in abundance.. Further reading: http://bitcoin.stackexchange.com/questions/1305/what-features-of-scrypt-make-tenebrix-gpu-resistant |
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I'm interested to see if these will pay off or not. 76 BTC seems like so much to me. Best of luck to you investors.
i think these guys are betting on BTC in the future is worth more than BTC right now... |
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I'm pretty sure liquid nitrogen makes metals shatter like glass and fingers solidify like icelollies.
im pretty sure liquidnitrogenoverclocking.com does not use liquid nitrogen. |
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Any advice? Point me somewhere please
https://localbitcoins.com/noobie disclaimer : I have never purchased bitcoins from anybody... yet... |
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https://bitcointalk.org/index.php?topic=177133.0You can only post in the Newbie and Local sub-forums till you have 5 posts and at least 4 hours on the forum. The other two restrictions are you need 1 post to be able to send a PM and 10 posts to put a link in your sig.
So now you can write PM...
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I recently received my modminer quad, have set it up, have set up Ubuntu, and have set up BFGMiner 3.0. BFGMiner seems to run just fine, but it doesn't detect my FPGA cards. Being new to Linux, I'm not exactly sure how to approach this issue.
Can anyone offer any advice?
The MMQ is connected via USB, but BFGMiner just detects the CPU for mining, not the FPGAs.
Sorry if this is stupid - I've looked and haven't found any help. It's probably just something simple I'm missing but, like I mentioned, I'm new to Linux / Ubuntu.
Thank you in advance!
paste your output of and Also, when u run the miner, try to run it as sudo, if that works, that means the user ur running under cant see the USB device permission issue easy to solve more info later. if that doesnt work then maybe something else is wrong.. maybe unit is damaged... or bfgminer was compiled wrongly. |
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