An Attempt to create a more complete freq value chart for the ant miner chip.

[colinrgodsey]

the newer version of cgminer has some formula for this (all possible values)

Code:

static void anu_find_freqhex(void)
{
	float fout, best_fout = opt_anu_freq;
	int od, nf, nr, no, n, m, bs;
	float best_diff = 1000;

	anu_freqfound = true;

	for (od = 0; od < 4; od++) {
		no = 1 << od;
		for (n = 0; n < 16; n++) {
			nr = n + 1;
			for (m = 0; m < 64; m++) {
				nf = m + 1;
				fout = 25 * (float)nf /((float)(nr) * (float)(no));
				if (fabsf(fout - opt_anu_freq)  > best_diff)
					continue;
				if (500 <= (fout * no) && (fout * no) <= 1000)
					bs = 1;
				else
					bs = 0;
				best_diff = fabsf(fout - opt_anu_freq);
				best_fout = fout;
				anu_freq_hex = (bs << 14) | (m << 7) | (n << 2) | od;
				if (fout == opt_anu_freq) {
					applog(LOG_DEBUG, "ANU found exact frequency %.1f with hex %04x",
					       opt_anu_freq, anu_freq_hex);
					return;
				}
			}
		}
	}
	opt_anu_freq = best_fout;
	applog(LOG_NOTICE, "ANU found nearest frequency %.1f with hex %04x", opt_anu_freq,
	       anu_freq_hex);
}

if thats too hard to read, here's the converted snippet from ScalaMiner (also probably hard to read... also untested, sorry)

Code:

def getAntMinerFreq(freq: Double) = {
		var bestDiff = 1000.0
		var bestOut = freq
		var exactFound = false

		for {
			od <- 0 until 4
			no = 1 << od
			n <- 0 until 16
			nr = n + 1
			m <- 0 until 64
			nf = m + 1
			fout = 25.0 * nf / (nr * no)
			if math.abs(fout - freq) <= bestDiff
			if !exactFound
		} {
			val bs = if(500 <= (fout * no) && (fout * no) <= 1000) 1 else 0
			bestDiff = math.abs(fout - freq)
			bestOut = fout

			val freqVal = (bs << 14) | (m << 7) | (n << 2) | od;

			if(freqVal == fout) {
				exactFound = true
				bestOut = fout
			}
		}

		bestOut
	}

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[colinrgodsey]

Cgminer calculates values on the fly for any frequency for the U1/2s with the --anu-freq command. You can either run a U1 with cgminer and various frequencies in debug mode to see what values it generates, or you can audit the code that I wrote that generates it.

annnnd im an asshole for not reading the thread well enough. sorry ckolivas =\

[philipma1957]

Cgminer calculates values on the fly for any frequency for the U1/2s with the --anu-freq command. You can either run a U1 with cgminer and various frequencies in debug mode to see what values it generates, or you can audit the code that I wrote that generates it.

annnnd im an asshole for not reading the thread well enough. sorry ckolivas =\

no you are not an a-hole.   

 I am just a bit too extended  time wise to punch in all the freqs and test out the new  cgminer.

I will get to it one day soon or as BFL would say in two weeks or so.

I wanted to come up with an easy plug-in  chart and frankly The chart I have so far is easy but still short number wise.

I did a lot of testing with freq 387  and freq 393.75 some miners do like one over the other.

 I also have a miner that prefers 375 over 350 or 387 or 393 or 400 .

I have to have a few hours alone time to test cgminer and have not had the empty time slot open for me.

[colinrgodsey]

I'll see if i can make a table. I finally tested that code and it should work (will verify against some actual data), can probably just make a script to dump it out to CSV quick.... can throw that into excel or whatnot.

[philipma1957]

I'll see if i can make a table. I finally tested that code and it should work (will verify against some actual data), can probably just make a script to dump it out to CSV quick.... can throw that into excel or whatnot.

would be nice of you to do so.  thanks.

[windpath]

387 is awesome!

I have 6 Ants, one of them is missing a couple capacitors, and ran with a VERY high error rate at every setting I tried, was over 1% @ factory setting, and over 3% at other speeds...

Set it to 387 yesterday to give it a whirl...

Error rate: 0.00082799134 %

Calculator: http://www.coincadence.com/antminer-s1-hardware-error/

My worst Ant as far as errors goes has now set the bar for all the others

[philipma1957]

I put these links in one spot they will be helpful  for the s-1  maybe even the s-3








good links to help with over and under clock of the s-1.  also for under volting the s-1


original undervolt- under clock link

https://bitcointalk.org/index.php?topic=526060.0

youtube over clock link

https://www.youtube.com/watch?v=72FU4Z_n0B4

youtube for under volt


UnderVolt Antminer S1 Video-Guide
http://youtu.be/Cj9hgoUnpTc

https://bitcointalk.org/index.php?topic=688408.0
and the thread for that on bitcointalk

[whonesta]

please try to underclock to 215.625

and to 206.25


the above codes were from my hand calculations, GH speeds added. 215.625 gives me 1100Gh and less than 1.1% error rate



https://bitcointalk.org/index.php?topic=589429.msg6485048#msg6485048

so 206.25

and 215.625   were both developed by klondike_bar

        option 'freq_value'    '6206'  #215.625M
        option 'chip_freq'     '215.625'       
        option 'timeout'       '18'   maybe 17

        #option 'freq_value'    '5002'  #206.25M 
        #option 'chip_freq'     '206.25'         
        #option 'timeout'       '19'  maybe 20


these 2 can be tested

Neither clock freq worked with the antMiner S3, nor did 275 fyi

[ZiG]

I put these links in one spot they will be helpful  for the s-1  maybe even the s-3








good links to help with over and under clock of the s-1.  also for under volting the s-1


original undervolt- under clock link

https://bitcointalk.org/index.php?topic=526060.0

youtube over clock link

https://www.youtube.com/watch?v=72FU4Z_n0B4

youtube for under volt


UnderVolt Antminer S1 Video-Guide
http://youtu.be/Cj9hgoUnpTc

https://bitcointalk.org/index.php?topic=688408.0
and the thread for that on bitcointalk

S3 is a "little" bit DIFFERENT...chapter 3 of this...:

https://bitmaintech.com/files/download/BM1382_Datasheet_v3.0.pdf

ZiG