good friend!

Hello,Steven Jenkins ,

 Thank you for you helping  before the collected expertise of comedi!

David had sent me a short email, saying that comedi can do
synchroniztion. He said "This only currently works with the ni_pcimio
and ni_atmio drivers. The simultaneous_start example shows how to do
this and get synchronization of closer than a few nanoseconds. "

But I have tried this sample without success in RHlinux( Dr Rolf Mueller
think that there is no problem in RHlinux, he is a friend of my prof. So
I have to still try in RHlinux  sometime). I have posted the still
existing problem in still the problem of delay before AI in GMANE today.

At the same time  I question myself,  frankly, to this time I still
don't  really understand comedi's data flow : The mechanism of
transporting datas from hardware buffer to software buffer(the  process
and the relevant variables , commands). when you or someone have time,
please give me a introduction.

By the way, I have tried in last week to  set up an  ao cmd and  ai cmd
and trigger them with the same trigger with no success(but have not try
all possible possibilities).

best regards

Wang Maosen
 From Germany