[Asterisk-Users] ZAPRTC question(s)

[Hadar Pedhazur]

I have a system with no Digium hardware in it (two others with 2 X100P 
cards in each of them as well). I'm interested in using MeetMe in the 
one without the hardware (it works great in the ones with the 
hardware). I can't use ztdummy, because the system has usb-ohci 
drivers, rather than usb-uhci.

I have read the little there is about zaprtc, and I am wondering 
whether there is a downside in turning off RTC support in the kernel, 
and recompiling. Are there other things that might break if I do this 
(it simply feels like a more "drastic" step than the ztdummy 
approach)? (I am running Red Hat 9.0)

Finally, and this will show my complete naivete for linux programming, 
I am curious as to why no one has written a timer that simply hooks 
the standard kernel installed RTC? From the rtc.txt file in the 
Documentation directory of the kernel source, it seems that one can 
"hook" the interrupt and get the clock ticks delivered via interrupt 
directly to your c code. Isn't that what is needed to get a stable 
timing device in *? Just curious, as I'm sure that it's way more 
sophisticated than that...

Thanks in advance.

P.S. The system with no Digium hardware in it is in a colo facility 
that is 250 miles from my house, and besides, I don't have physical 
access to the machine. So, it would be painful, and expensive, for me 
to arrange for a Digium card to be installed in the machine, and it 
would be used for nothing other than the clock, since there are no 
other interfaces available for me to plug into the card. This was just 
to nip the "why don't you just pony up for a Digium card?" responses :-)