How to find out that the card in a given NIDAQ slot is a DSA card?

In the description of DAQ_Op(...) function in the traditional NIDAQ function reference one reads:
"buffer" is an integer array. "buffer" has a length equal to or greater than count.
When DAQ_Op returns with an error number equal to zero, buffer contains the acquired data.
For DSA devices, buffer should be an array of i32. These devices return the data
in a 32-bit format in which the data bits are in the most significant bits.
Question 1: How to find out programmatically that the card in a given NIDAQ slot is a DSA card?
Question 2: How many MSB carry the information? How do I find out bit-ness of the card (programmatically)?
The obvious solution to create and keep updated the table/fil
e with the data for all existing DAQ cards is unacceptable. This could be maintained by NI itself, but not by 3rd party developpers, like me.

Bryan, thanks for your answer.
I hope that my NIDAQ-wish-list will not only reach NIDAQ developers but some of it will be implemented in the next versions of NIDAQ.
I should say that I am quite pessimistic because I was sending similar requests via German support few YEARS ago and I am still even do not know whether they reached developers or not. Even if yes, the present NIDAQ still does not have these functions and this means that NI takes 2..4 years to react on the feedback.
At the moment I have no choice, and I do maintain self-made info file (nidaq.ini). But beleive me, it is a pain in the @ss to scan help files and manuals of the DAQ cards which I've never seen just to include info in nidaq.ini. And when my customers of a brand new NIDAQ ca
rd call and wonder why the card is not reacognized by my application correctly, I tell to them that this is basically fault of NI. Because NI provides no way to get card info. I am doing my best analysing error codes, but it does not help in all cases. Sorry, guys, but you left no choice to me.
As for NIDAQmx, this is not a solution either. I am not going to rewrite my existing and working rather big application. It could be a good suggestion for those who just starts developing a new applications from the scratch, but not for those who almost finished it. Even for those who begin now, NIDAQmx may not be a good choice, because, as I saw in this forum, it does not support all cards that are supported by NIDAQ. It also looks like that instead of improoving, developing and fixing NIDAQ, NI dicided to change API completely. It is not yet clear to me whether NIDAQmx is supposed to substitute NIDAQ in the future or not. If not, I would concentrate on improoving trad. NIDAQ. If yes, it wou
ld be a disaster for many developers. :-(
Anyway, I hope that the interaction between NIDAQ team and application developpers will be improoved, and we will see some results of this feedback.

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