Using COM ports above 9

[xDGDZEx]

Hi guys,

Until I get raspberry pi, I'm stuck running my BFL singles on my main rig (W7). I have a 10 port hub hooked up to connect them all. I have all of the drivers installed to use COM ports, and my first 5 singles take up ports 5-9 and are working fine. My problem is using ports above 9 (specifically 10-12). They are not being used for anything else according to device manager, but when I point my singles to those ports, CGminer wont recognize them. I'm using .bat files to start them, and everything works fine on the first 5.

Can anyone think of a reason that COM ports above 9 would cause problems? I tried reassigning the other ones to ports 2-4 (which were already in use), but that seemed to bring on weird BSODs. So I'm going back to trying to get the unused ports to work. Any ideas are appreciated.

Thanks!

[Stephen Gornick]

Which O/S?
 Oh, ... missed the "(W7)".

This is really old, so I don't know if it applies to Windows 7:
 - http://support.microsoft.com/default.aspx?scid=kb;EN-US;q115831

my first 5 singles take up ports 5-9 and are working fine. My problem is using ports above 9 (specifically 10-12).

So this switch to FPGA thing is real, huh?

[Epoch]

Hi guys,

Until I get raspberry pi, I'm stuck running my BFL singles on my main rig (W7). I have a 10 port hub hooked up to connect them all. I have all of the drivers installed to use COM ports, and my first 5 singles take up ports 5-9 and are working fine. My problem is using ports above 9 (specifically 10-12). They are not being used for anything else according to device manager, but when I point my singles to those ports, CGminer wont recognize them. I'm using .bat files to start them, and everything works fine on the first 5.

Can anyone think of a reason that COM ports above 9 would cause problems? I tried reassigning the other ones to ports 2-4 (which were already in use), but that seemed to bring on weird BSODs. So I'm going back to trying to get the unused ports to work. Any ideas are appreciated.

Thanks!

Um, the OP is pretty old so I'm not sure if you already resolved this. But take a peek here: https://bitcointalk.org/index.php?topic=28402.msg874683#msg874683

Basically for COM ports above 9 you have to use the 'longhand' notation. Something like this:

Code:

cgminer -o <pool> -u <user> -p <pass> --disable-gpu -S \\.\COM12

That should get you going.

[xDGDZEx]

holy mining batman! it works!

Thanks so much for this. I had given up and moved it to my laptop, because it just used ports 3-9. When I tried on my main rig, I ended up pushing the singles on to ports 2 and 3 which were already in use...that didn't work out so well, I got bsod 6 times a day.

So in conclusion, you are a wizard.

[Epoch]

holy mining batman! it works!

Thanks so much for this. I had given up and moved it to my laptop, because it just used ports 3-9. When I tried on my main rig, I ended up pushing the singles on to ports 2 and 3 which were already in use...that didn't work out so well, I got bsod 6 times a day.

So in conclusion, you are a wizard.

I'll take that as a compliment! Actually Luke-jr pointed me in the right direction when I ran into the same roadblock as you. I'm just passing along the same tip he game me.

Glad you are up and running!