Topic: Klondike - 16 chip ASIC Open Source Board - Preliminary - page 90. (Read 435369 times)

Also, whats the word on linking these together?  For example, buying them built as K16s and connecting them in groups of 4?

Fast and good obviously. Its a race against time, revisions will help less and less as the hashrate goes up on the network when more asics come online.

Start with overclockability, or don't plan on it.

component rating is actually decided early on.

component rating is actually decided early on.

You are asking about the status of step 45 in the process, we are at step 5 "Getting the device to work"

Whats the word on the quality of components for the design? Keeping overclocking in mind, it would be smart to make sure the PCB can handle higher power than what is minimally required to run at 282MHz. I know burnin has his components rated high enough for overclocking, and it will be a big decision point between that and the klondike. I would sincerely hope the board could handle pushing these chips to their limits, 400-450MHz. Being able to get that much more ROI for small hardware cost increases would be phenomenal.

Also, whats the word on linking these together?  For example, buying them built as K16s and connecting them in groups of 4?

Famous moment in the history of Bitcoin: BKKCoins hopping around his workbench. Makes me think of Archimedes running down the street naked.

Maybe in the history books BKKCoins will have been hopping in the nude.

Thanks.


Cool.

Grab KiCad and open klondike.pro

http://www.kicad-pcb.org/display/KICAD/KiCad+EDA+Software+Suite

regarding KICAD - I had better experience with the version compiled from sources - this worked on Fedora 18:

# https://code.launchpad.net/~kicad-stable-committers/kicad/stable

mkdir kicad && cd kicad
bzr branch lp:kicad/stable # more than 220 MB, 10 minutes to get
cd stable

cmake -DCMAKE_BUILD_TYPE=Debug -DKICAD_STABLE_VERSION=20130528 . # wxWidgets and boost needed

make -j3 # around 10 minutes

make install # as root

/usr/local/bin/kicad # works

# /usr/local/share/doc/kicad , /usr/local/share/kicad
# fedora installs older, but useful kicad-doc, like /usr/share/doc/kicad/help/en/Getting_Started_in_KiCad.pdf

# ? https://github.com/Trump211/Eagle2Kicad
# decent 3D models there for many parts that could be used to render a 3D preview
# http://smisioto.no-ip.org/elettronica/kicad/kicad-en.htm

NEWS FLASH!!! NEWS FLASH!!!

My K16 is hashing with 1 chip.

It's not giving a correct result nonce yet but I'm almost 99% sure that's due to errors in precalc code or maybe I'm shifting in word order backwards.

I soldered an ASIC on the board this morning and spent all day twiddling this and that, mostly getting the clock config right. Then bamm I saw something that looked like nonce bits coming out but they were stunted little bits trying desperately to reach high. But the twinkle was enough and I went through the Avalon reference design again to check and realized I'd not used the correct pull-up value for the result lines. Somehow I f'd up and spec'd 100k resistors instead of 470R. So I quickly removed them and soldered in some 1K that I had here. And the bits sprung forth to their full heights. I was totally excited and hopping around my work bench. Even my wife was in to see what the big commotion was about.

So... next step, test the UART receiver, and muck with the send data until the right nonce comes back.

BTW I'm running at half clock b/c no heat sink attached yet. The chip gets slightly warmish to the finger. With only one chip and half clock you have to set the scope trigger and hold the probes for a while until a nonce is found. I counted about 4-8 seconds but of course it depends on what point it is in it's cycle. One chip at half clock (128MHz) would be about 33 seconds for a full sweep.

What file type are the electronic copies of the K16 in? Are they CAD files or Eagle PCB files? I suppose they are on Github but what program do I need to open them?

Thailand.