time-nuts-boun...@febo.com wrote on 05/28/2009 11:08:31 AM: > And depending on what you mean by "industrial grade", they also have > the bc635 board in a CompactPCI form-factor, too. Or at least they > used to some years ago.
I remember that card from 1995! The BC635 would be suitable. If still made. > I don't know what sort of drivers they have for AIX. I didn't use > their drivers for FreeBSD (v3.0 back at the time), but you could > probably cobble up a pretty minimal driver or use existing OS > facilities to just memory-map the PCI device registers which > you can manipulate from user space. As I recall, when you perform > a read-access on one of the registers, it will latch a 64 bit > timestamp into two other device registers that you can read at > your leisure. There are other capabilities, like programmable > interrupt generation that the board can perform, too. I don't know of an AIX driver, but perhaps... That's how I would do the driver as well. I'm trying to buy something, if possible, and in any case given the expense of writing a driver the question will surely come up. > On interesting experiment I did with the bc635 was to program it > to generate an interrupt, and then latch the time in the > interrupt service routing to measure interrupt latency. Pretty > scary sometimes.. I would be doing something not quite that dangerous. I need to trigger software to talk to hardware on a fixed schedule about 15 times a second, where the hardware has hardware (10 MHz and 1PPS) access to the time, and complains if commands arrive too late. Joe G > louie > > > > On May 27, 2009, at 10:49 PM, Lux, James P wrote: > > > Symmetricom bc635pci-V2 or -U? PCI-SG 2U > > (some of the old TrueTime products, I'm sure) > > > > It does IRIG... You'll have to call Symmetricom to see about > > drivers.. It has Win, Linux, and Solaris. > > > > > > On 5/27/09 7:26 PM, "Joe Gwinn" <joegw...@comcast.net> wrote: > > > > Does anybody know of any PCI cards that will receive IRIG-B time > > signals and come with an I/O driver for AIX (IBM's flavor of UNIX)? > > Industrial-grade commercial products are preferred. > > > > Thanks, > > > > Joe Gwinn > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi- > bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi- > bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi- > bin/mailman/listinfo/time-nuts > and follow the instructions there. > > The following line is added for your protection and will be > used for analysis if this message is reported as spam: > > (Raytheon Analysis: IP=64.34.164.147; e-from=time-nuts- > bounces+gwinn=raytheon....@febo.com; from=lo...@transsys.com; > date=May 28, 2009 3:09:34 PM; subject=Re: [time-nuts] PCI IRIG > receiver card for AIX?) _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
