Klondike - 16 chip ASIC Open Source Board - Preliminary

[Lollaskates]

 I'm having a terrible day here.

I suppose you are...



lol

[cardcomm]

  I'm having a terrible day here.

Great drawing!

Just try and relax and have fun with this. We're all behind you. And please don't get distracted by people asking you to troubleshoot their boards. We know you need to concentrate on getting yours working to your satisfaction

[notlist3d]

  I'm having a terrible day here.

Great drawing!

Just try and relax and have fun with this. We're all behind you. And please don't get distracted by people asking you to troubleshoot their boards. We know you need to concentrate on getting yours working to your satisfaction

Agreed card.  BKK u are making huge progress.  I woulden't worry about helping terrahash troubleshooting..... but that is another story.

Keep up the good work cant wait to see what u do next!

[Axion_Zen]

  I'm having a terrible day here.

Great drawing!

Just try and relax and have fun with this. We're all behind you. And please don't get distracted by people asking you to troubleshoot their boards. We know you need to concentrate on getting yours working to your satisfaction

Agreed card.  BKK u are making huge progress.  I woulden't worry about helping terrahash troubleshooting..... but that is another story.

Keep up the good work cant wait to see what u do next!

Im sure that is EXACTLY why he is having a bad day...dont bring your sour grapes here because you have issues with TH.

[marto74]

[CumpsD]

images

Without cooling?

[pixl8tr]

images

Without cooling?

I see a black heatsink on the K-1 board slathered in thermal paste.

[marto74]

images

Without cooling?

I see a heatsink on the board slathered in thermal paste.

Of course with heat sink

[turtle83]

images

Without cooling?

I see a heatsink on the board slathered in thermal paste.

Of course with heat sink

And... getting valid results @450 ?

(sorry too n00b to make sense of scope data)

[marto74]

images

Without cooling?

I see a heatsink on the board slathered in thermal paste.

Of course with heat sink

And... getting valid results @450 ?

(sorry too n00b to make sense of scope data)

Yes
Also we implemented in th 16 bit PIC USB boot loader

[cp1]

  I'm having a terrible day here.

Ha, Kicad is worse than I thought.

[cardcomm]

  I'm having a terrible day here.

Great drawing!

Just try and relax and have fun with this. We're all behind you. And please don't get distracted by people asking you to troubleshoot their boards. We know you need to concentrate on getting yours working to your satisfaction

Agreed card.  BKK u are making huge progress.  I woulden't worry about helping terrahash troubleshooting..... but that is another story.

Keep up the good work cant wait to see what u do next!

Im sure that is EXACTLY why he is having a bad day...dont bring your sour grapes here because you have issues with TH.

I'm not sure what you mean by this. But Terrahash haven't exactly endeared themselves to this community...

[pixl8tr]

I'm not sure what you mean by this. But Terrahash haven't exactly endeared themselves to this community...

Speak for yourself.  I don't have an issue with TH unless they don't deliver as promised.  I choose not drink the kool-aid the trolls are serving. 

[fasmax]

 I'm having a terrible day here.

I suppose you are...



lol

Hello
This is not correct.
The second NOR gate both inputs should be connected together.
The resistor should go from the output of the first NOR gate to the inputs of the second NOR gate.
The 30pf capacitor should connect from the second NOR gate inputs to ground.

[BkkCoins]

 I'm having a terrible day here.

I suppose you are...



lol

Hello
This is not correct.
The second NOR gate both inputs should be connected together.
The resistor should go from the output of the first NOR gate to the inputs of the second NOR gate.
The 30pf capacitor should connect from the second NOR gate inputs to ground.

This works as well - it just delays one edge instead of both.

I'm not sure what you mean by this. But Terrahash haven't exactly endeared themselves to this community...

I don't have a problem with TerraHash, other than maybe they don't communicate much. I hope they can get good results and do well with the board, and will help, time depending, if I can.

My terrible day yesterday was to do with revising the code to get better timing and throwing everything else out of whack. It started giving me 50% error rates and crap like that. I've solved part of that now but it's still higher than before. It doesn't make much sense as I didn't change any hardware at all, and the code should be helping not hindering. Anyway, this morning I'm starting out again and I've got everything except ResultRx out of the interrupt servicing allowing for it to have primary control. Once it gets triggered it doesn't let go until it has all 4 bytes. I hope today goes better, as the crunch is really on now, and believe me I feel the pressure to get everything finalized enough to make final boards.

[daemondazz]

  I'm having a terrible day here.

Ha, Kicad is worse than I thought.

Oh, where is the +1 funny button.

[fasmax]

  I'm having a terrible day here.

Ha, Kicad is worse than I thought.

Oh, where is the +1 funny button.

That is good for a laugh
And thanks to BkkCoins for explaining the delay circuit.
Looks like he's clocking data into the PIC on the falling edge of the clock.

[Bicknellski]

 I'm having a terrible day here.

Was your etch a sketch broken?

[terrahash]

Just to let you know, the reason for no nonces coming back was that during the assembly they missed a resistor (R47), which basically connects Res_CK to the PIC. After soldering it on, we started getting nonces back but all were marked as "BAD". We then used your trick of passing the clock through two NOR gates, and now all the nonces are coming back as "GOOD" with the clock set as 128 or 256. Anything more than 256, we stop getting the nonces back. The boards is hashing with clock set at 256 MHz. It stops hashing if the clock is increased. We are also seeing a lot of HW errors.

[BenTuras]

Once it gets triggered it doesn't let go until it has all 4 bytes. I hope today goes better, as the crunch is really on now, and believe me I feel the pressure to get everything finalized enough to make final boards.

Sorry if I am going on about this. May I suggest:
Create a tiny interrupt handling routine that gets and stores one byte in a buffer and increment the store memory pointer and returns from the interrupt again. Mean and lean!
something like:

Code:

constant int dataBufferLength=32;
byte interruptDataBuffer[dataBufferLength];
byte* interruptDataBufferAddress=&interruptDataBuffer;
byte* lastReadBufferAddress=&interruptDataBuffer;
handleInterrupt:
    reg a = getDataByteFromInterrupt();
    get ix from interruptDataBufferAddress;
    store a at ix;
    increment ix;
    if (ix == &interruptDataBuffer+dataBufferLength) ix=interruptDataBufferAddress;
    store ix at interruptDataBufferAddress;
    returnFromInterrupt;

And in your main program you can then compare lastReadBufferAddress with interruptDataBufferAddress to see if byte(s) have been received.

I know I am simplifying things, but interrupt handlers should be as short as possible.

I also have a question:
It is possible, although unlikely, that more than one chip has a result at the same time. Do you know from which chip the data is coming ? If so, this should be taken into account in the above pseudo code. If not, could it be the reason for your data issue?

Good luck solving the issue at hand!