Re: [time-nuts] PCI IRIG receiver card for AIX?
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 don't know what sort of drivers they have for AIX. I didn't use their drivers for FreeBSD (3.0 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. 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.. 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.
Re: [time-nuts] PCI IRIG receiver card for AIX?
time-nuts-boun...@febo.com wrote on 05/27/2009 10:43:18 PM: 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. In the past I have, on one occasion, been able to use a regular audio card for this, and I used the IRIG_AUDIO refclock with ntpd for this. I don't know if that is what you have in mind but it should be an option. Hmm. That isn't what I had in mind, although you cannot tell from how I phrased the query. Audio cards cannot generate the time interrupts et al, so I'm looking for a IRIG receiver card that fits in a PCI bus slot, and the AIX I/O driver to allow user software to utilize the card. Joe ___ 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.
Re: [time-nuts] PCI IRIG receiver card for AIX?
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.
[time-nuts] PCI IRIG receiver card for AIX?
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.
Re: [time-nuts] PCI IRIG receiver card for AIX?
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. In the past I have, on one occasion, been able to use a regular audio card for this, and I used the IRIG_AUDIO refclock with ntpd for this. I don't know if that is what you have in mind but it should be an option. H ___ 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.
Re: [time-nuts] PCI IRIG receiver card for AIX?
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.
