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2521  Other / CPU/GPU Bitcoin mining hardware / Re: My BFL SC Single 60 went out in a puff of smoke - what next? on: January 17, 2014, 10:50:24 AM
OP is there any BFL warranty?  or had you manipulated the single in any way that voids a warranty?  I have often wondered about this, seeing how shady BFL was originally with their delays.

Any news?

Any news?
2522  Bitcoin / Group buys / Re: [HALTED] Bitmine CoinCraft A1 28nm chip distribution / DIY support on: January 17, 2014, 10:37:46 AM
RFC: Lower bound SPI transfer Volume Estimation for A1 Chip Chains

I have been asked from different parties what the maximum chain length of the A1 chips is, and while the specs limits the addressable number of chips to 254, I tried to approach the potential limit from the communication side.

To have the chip continuously hashing, for each nonce range the absolute minimum command sequence consists of
  • 1x 07 to send the job; command length: 30 words
  • 1x 08 to get the result; command length: 4 words
    Note: this is the average - some jobs have more than one result, others have zero
  • 1x 0a to get the queue state; command length: 5 words
    Note: this is the absolute minimum, might need to cycle poll

To get a command pushed through the chain of M chips, we need to push
  • 2M words for broadcast commands
  • 2N-1 words for unicast commands to chip N

With that, the number of word to write per job to chip N in a M-chip chain is
 (30 + 2N - 1) + (4 + 2M) + (5 + 2N - 1)
= (29 + 2N) + (4 + 2M) + (4 + 2N)
= 37 + 4N + 2M

For all chips in chain of M chips:
W = sum(N = 1..M) {37 + 4N + 2M}
  = M * (37 + 2M) + 4 * (M * (M + 1) / 2)
  = 37M + 2M^2 + 2M^2 + 2M
  = 4M^2 + 39M
  = M * (4M + 39)

For the ease of calculations, we assume W = 4M * (M + 10)

The lower bound of required words W to transmit for continuous hashing a chain of M chips with that is
 1: 44
  2: 96
  4: 224
  8: 576
 10: 800
 16: 1664
 20: 2400
 32: 5376
 40: 8000
 64: 18944
 80: 28800
128: 70656


A chip running at 800MHz finishes a nonce range in 4/25 seconds or 160ms.

Assuming an SPI duty cycle of D = 20% (polling causes idle times) the minimum SPI host clock to serve a chain of M chips is

W * 16 * 1/D * 1000 / 160 = W * 500Hz

Minimum host SPI clock frequency to operate a chain of M chips:
 1: 0.02MHz
 4: 0.11MHz
 8: 0.29MHz
16: 0.83MHz
32: 2.69MHz
40: 4.00MHz
64: 9.47MHz

At 800MHz core clock, the A1 internal SPI clock is 12.5MHz. Since it is required to keep external SPI clock below internal, we shall assume 64 chips to be the upper bound chain length to try.


Please review and let me know if something is wrong.




Having our guys have a look will respond this weekend. Thanks for the info Zefir.

----

[edit] Looks ok from what our EE said. Carry ON!
2523  Other / CPU/GPU Bitcoin mining hardware / Re: My BFL SC Single 60 went out in a puff of smoke - what next? on: January 17, 2014, 06:18:59 AM
here is my 60 single's new trick, it will run about 12 hours at rated hash, then starts slowly dropping speed.  Used to be it took me a few days to notice because it happened slowly, now I will be under 40 in 24 hours and I am rebooting it daily.

anybody heard of this one before?

Memory leak?
2524  Bitcoin / Hardware / Re: -- Butterfly Labs New 600GH "Mining Card" - RED FLAGS?!?! on: January 17, 2014, 06:11:00 AM
Oh there is some trickle down going on here unfortunately the customers never asked for that sort of abusive treatment from BFL.
2525  Bitcoin / Hardware / Re: [ANN] UnicornHasher Baby Unicorn Asic In STOCK 1HP Live Unicorn Hashers Coming! on: January 17, 2014, 06:09:06 AM
Quote
I believe you thought 10 extra units not nine as you stated is that correct?

My thoughts are usually only 90% formed. 

But do not change the subject.  Please respond to my disparaging remarks with disparaging remarks of your own.  It is what I expect, not truthful answers to customer support questions.  Have you not read the Mining Equipment Company Executive Training Manual?

As I've said, we are short staffed at the moment.  It would appear that BFL Josh and HashFast cl are far to busy insulting their own customers to join us.

With that all I can say is: We never "Promised' anything.  There were no "guarantees." Your order should ship in Two WeeksTM.  Everything you are saying is "lies." We gave you "estimated timelines."  That page you read said "expected" or "tentative schedule."

I believe that sums it up you useless lying uninformed customer!

Happy Hashing

You forgot... "You don't know how BitCoin works!"
2526  Bitcoin / Hardware / Re: Here's a LOOOOOOOOOOOOOOOOOOK at your Monarch! on: January 17, 2014, 05:17:47 AM
2527  Bitcoin / Hardware / Re: -- Butterfly Labs New 600GH "Mining Card" - RED FLAGS?!?! on: January 17, 2014, 04:30:37 AM
Never have they met their own estimated timelines not even once. At this point one has to be rightly suspicious of the actual motives behind posting such inaccurate estimates.
2528  Local / Mineração em Geral / Re: Fabricando ASIC on: January 16, 2014, 01:26:21 PM
Chips or Miners or Both?

Drop me an email if you are keen on the Wasp modular miner when the prototypes are ready.

Envie-me um e-mail se você estiver interessado no mineiro modular Wasp quando o protótipo estiver pronto.

darin.bicknell@gmail.com.
2529  Bitcoin / Hardware / Re: BFL Product Failures / Underperformance. on: January 16, 2014, 12:48:23 PM
https://bitcointalk.org/index.php?topic=414941.msg4542107#msg4542107

Quote
mine was at 60 degrees celsius before it died, coffee mug warmers~, i think i could fry an egg on it.
2530  Other / CPU/GPU Bitcoin mining hardware / Re: My BFL SC Single 60 went out in a puff of smoke - what next? on: January 16, 2014, 10:22:46 AM
OP is there any BFL warranty?  or had you manipulated the single in any way that voids a warranty?  I have often wondered about this, seeing how shady BFL was originally with their delays.

Any news?
2531  Bitcoin / Hardware / Re: HashFast announces specs for new ASIC: 400GH/s on: January 16, 2014, 09:15:58 AM
Sure, but the laws concerning refunds for unshipped products applies to BFL equally and many BFL customers will have lost a far larger part of their investment than any HF customer, assuming the latter starts shipping soon.

Given what has happened with BFL most likely precipitates what is going on with HashFast as well as other companies that fail to uphold their contracts. There are probably many former BFL now HF customers holding the HashFast CEO and others to their word. Neither frankly seem to understand basic ethics given what has been posted irregardless of the time it took to devolve. Also note they are FORCING refunds in an effort to do what exactly? It seems they are trying to lock people into taking USD in exchange for their BTC and that was not the deal as clearly stated here in this thread by many rightfully upset customers. The deal and I read it as well was that you got BTC for BTC... I can't believe they are actually going to try and screw over people. Sickening.
2532  Bitcoin / Hardware / Re: Klondike - 16 chip ASIC Open Source Board - Preliminary on: January 16, 2014, 08:57:08 AM
--- Back on Topic ---


Yes, Zipiju is waiting on PCBs to do initial Avalon Gen2 assembly and bring up testing.

H@shKraker

Guys, sorry for the delays, and my absence here.
Things are happening here, so I'm short on the free time.
I'm going to pick the PCBs up tomorrow (today) morning. They are already cleared by the customs.
Unfortunatelly, I'm not at home, so can't do the assembly tomorrow. I'm returning home friday night, and will be assembling the PCBs at saturday. So expect some (hopefully good) news this weekend.
So until then, hold tight Smiley.
2533  Bitcoin / Hardware / Re: Klondike - 16 chip ASIC Open Source Board - Preliminary on: January 16, 2014, 08:51:55 AM
zipiju can you start a new thread? This one is a mess and will get worse when refunds dont arrive soon.

Ya and you can go make your accusation thread as well.

Might as well lock this one up considering the OP is not working on the project.
2534  Bitcoin / Hardware / Re: [ANN] UnicornHasher Baby Unicorn Asic In STOCK 1HP Live Unicorn Hashers Coming! on: January 16, 2014, 07:48:58 AM
Do you sell T-shirts and coffee mugs? Or just vapourware BU's?

We are still looking though vendors for the T-shirts and coffee mugs.  Our attorney has to get back to us on what statements can be included on them before anything is final.

I can assure you that we will try to follow industry standards and precedents and get a warehouse full of Pens/Coffee Mugs/T-shirts before any high performance asics are even ordered.

What sort of imaginary asics do you have under the hood in the BUH's?
2535  Bitcoin / Hardware / Re: Klondike - 16 chip ASIC Open Source Board - Preliminary on: January 16, 2014, 05:58:53 AM
Bkkcoins work has not only helped this community, but his BOM and PCB have been adapted and copied many times. The Kondike has served as the basis for Technobit's miners, as well as a template probably for potential Litecoin mining ASIC pcb's as well, and who knows what other inspirations and technological innovations.

Accidents happen, and nothing is perfect. People lose bitcoins all the time, and they live through it, without brain damage.

That is not the case for real life accidents.

I appreciate what he has done to a tremendous degree, however it doesn't make it right for him to ignore his debts. I won't accept the not-small amount Chris owes me as some sort of collateral damage for the good of the greater mining community. That's ridiculous.

No one I hope would ask you to do that bassclef.

I merely think if anyone is going to smear his name they provide proof he lied and not insinuate that he faked or lied about laying in hospital  to take that to another thread and wax on about it there. This thread has been useful to so many people it doesn't need to devolve with name calling and false accusations or slander. I think it would be good if people could, if they have a legitimate beef and need to get BKKCoins to pay them back, to start a thread for that. For the most part people were civil asking for refunds or asking for more information that is cool. Jasinlee took that one step too far and slandered the guy.

I hope BKKCoins does whatever he can to send people refunds as quickly as possible and I believe that is well within the rights of people who are owed money to ask for it. In fact a number of us who have "lost" something in this monetarily have offered to donate more to help offset the loses of people. Maybe a new thread for a collection plate to refund those who are owed would be a great idea. Who is willing to escrow and check and verify who is owed?


----

Back on track...

zipiju nice work. I hope it benefits a lot of people.
2536  Bitcoin / Hardware / Re: [ANN] UnicornHasher Baby Unicorn Asic In STOCK 1HP Live Unicorn Hashers Coming! on: January 16, 2014, 05:35:09 AM
Do you sell T-shirts and coffee mugs? Or just vapourware BU's?
2537  Bitcoin / Hardware / Re: [ANN] Introcudtion to DualMiner USB (could mine both BTC and LTC) on: January 16, 2014, 05:29:20 AM
Feel free to send me a unit for evaluation.

darin.bicknell@gmail.com
2538  Other / CPU/GPU Bitcoin mining hardware / Re: KnC refunds on: January 16, 2014, 05:12:21 AM
$ / Gh/s?

Which product that is actually shipping the best?
2539  Other / CPU/GPU Bitcoin mining hardware / Re: Can we trust Butterfly Labs to deliver? on: January 16, 2014, 05:08:14 AM
https://bitcointalk.org/index.php?topic=280630.msg3000555#msg3000555

Quote
August 25, 2013, 02:33:58

Hi,

Few days ago I ordered 2 Monarch cards from BFL.

When I ordered they say delivery is estimated in October/November.

Now I see the first batch is sold out (http://www.butterflylabs.com/monarch/)

But the delivery dates they publish for the sold out dates are... "November/December"

Looks like they got another month delay just few days after they start taking orders...

If they finish the "tape out" few few days ago and at that time they estimate 60-90 days what can change now to get an estimation of 90-120 days.

With 60-90 days was a risky bet to buy... with 120 is a suicide.

I know may I have been an idiot buying from them.

Regards
2540  Bitcoin / Hardware / Re: *Monarch UPDATE* From our favorite boy Inaba ~~ More LIEs! on: January 16, 2014, 04:28:05 AM




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