Author

Topic: Modding VR control on the s9? (Read 812 times)

legendary
Activity: 3374
Merit: 1859
Curmudgeonly hardware guy
July 29, 2016, 10:12:19 AM
#6
Sounds like good times.
legendary
Activity: 3822
Merit: 2703
Evil beware: We have waffles!
July 29, 2016, 07:52:22 AM
#5
It is an ISP header. I pulled firmware off the first one to come in the shop back in Batch 1, but since it was a customer machine I wasn't authorized to do anything that would void the warranty. Only enough to get the chip number and a firmware dump. I haven't seen what it'd take to modify my S7 firmware for an S9 but it's probably not difficult, I just don't have one to test it on.
Tell ya what, I'll be getting 2 more when Bitmain has more s9's for sale so how about I have one drop shipped to ya to tinker with?

One thing I'd like to be able to tweak is the starting voltage. On my batch-1 and one batch-3 it usually takes a couple reboots to get all the cards firing on all cylinders. On the b1 it is card-3 (the usually hot one) but oddly enough on the b3 it is the middle card that needs a few restarts to get up to speed.
legendary
Activity: 3374
Merit: 1859
Curmudgeonly hardware guy
July 29, 2016, 12:57:42 AM
#4
It is an ISP header. I pulled firmware off the first one to come in the shop back in Batch 1, but since it was a customer machine I wasn't authorized to do anything that would void the warranty. Only enough to get the chip number and a firmware dump. I haven't seen what it'd take to modify my S7 firmware for an S9 but it's probably not difficult, I just don't have one to test it on.
legendary
Activity: 4256
Merit: 8551
'The right to privacy matters'
July 26, 2016, 09:09:17 PM
#3
Reserved for later thoughts on this.

Man I could use a drop from .1 to .085 watts a gh.

let us know.
legendary
Activity: 3822
Merit: 2703
Evil beware: We have waffles!
July 26, 2016, 08:29:39 PM
#2
Reserved for later thoughts on this.
legendary
Activity: 3822
Merit: 2703
Evil beware: We have waffles!
July 26, 2016, 08:22:02 PM
#1
Has anyone paid attention to the power input area of the s9 hash boards? This detail I took from the pic of of the s9  board posted in the ad for it shows:


In the lower-left, doesn't that look suspiciously like a programming port for a voltage controller? The switching FET's are there under the heatsink (nice touch!) as well as a honking big inductor so I have to assume that the s9 does use a buck regulator.

Hmm. Curious minds have to wonder what might be done with that...
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