Quote from: Bicknellski on July 04, 2013, 07:27:56 PM

Quote from: BkkCoins on July 04, 2013, 06:38:38 PM

Quote from: fasmax on July 04, 2013, 05:52:59 PM

Concerning the 128 MHZ vs 150 MHZ issue maybe the internal PLL has stability problems at different frequency's.

I hadn't thought about that, but it's possible and perhaps it's tuned for higher frequencies then I'm currently using. We'll see pretty soon. After I get a few more chips mounted I'll add a heat sink and bump up the clock. I think my plan is to add one more on the same bank, and then after that two more on the opposite bank.

Quote from: cardcomm on July 04, 2013, 06:34:52 PM

Isn't the GetWork protocol deprecated anyway? Not that it shouldn't work, but I thought stratum was the preferred protocol.

I haven't been following that but I'm sure stratum is preferred. And if it works that much better, for whatever reasons, then I'm not going to worry much about getwork.

****
I pushed new updates to github earlier with some small tweaks.

The firmware now takes clock cfg values from 256 up to 900. They are double-the-mhz rate so that's 128 - 450 MHz (not that you can run at 450 but the PLL on the ASIC accepts values that high). The code now detects when <500 and sets the half-clock bit when below. It also excludes 451-499 (ie. 225-249 MHz) by forcing to 450 since the PLL doesn't support that range.

Liquid cooling... I wanna see 450.

Dunk it in mineral Oil Tongue