Topic: Dual Firewire 800's Registration Problem
New user here. I recently acquired two Fireface 800's for my home studio. I have a Dell XPS M1530 laptop with an Intel Core 2 Duo processor running at 2.66 Ghz with 4 Gb Ram. I also have two hard drives for the laptop. One has Windows Vista SP2 32-bit and the other has Windows 7 64-bit loaded on it. The first Fireface 800 in the physical daisy chain is connected to the laptop via a Firewire 400 cable through an internal Ricoh 1394a interface in the Dell laptop. The second unit is daisy chained via a Firewire 800 cable. Timing sync is set up by a BNC cable from WC Out on physical unit one to WC In on physical unit two. Unit one is set to Master and unit two is set to Auto Sync with a WC Preference.
I started out using the hard drive with the Windows Vista SP2 32 bit OS and installed the latest drivers (ver 2.9991) for the Fireface 800's. I made sure that the two units were flashed with the latest firmware (2.77). The unit with the highest numbered serial number registered (my term) with the RME Settings software as Fireface (1) and the unit with the lower serial number registered with the RME Settings software as Fireface (2). I have only used the preamp inputs with my mics so far, but I was able to simultaneously record all eight preamp inputs for an hour with no drop outs or other problems at 24 bit/44.1 Khz. Things seemed to be working fine.
My ultimate goal is to be able to also use the Firefaces with Windows 7, so I proceeded to remove the hard drive with the Vista OS and install the drive that has Windows 7 in the laptop. I went through the same process to load the latest version of the Fireface drivers. After restarting the system, I proceeded to run the Fireface Settings application and immediately noticed that the two Firefaces had reversed their registration on the Windows 7 system. Now the lowest serial numbered unit is registering as Fireface (1) and the highest serial numbered unit is registering as Fireface (2).
I believe I read in the manual that the "oldest" serial numbered unit will always register as Fireface (1). Shouldn't the lowest serial numbered unit register as Fireface (1) under both OS's? It is a real pain to get things set up in Sonar, change hard drives (and OS's) and have to swap all the inputs and outputs around in Sonar. If they are both using the same 1394a Firewire interface, drivers and RME firmware, why would they register differently with just changing the OS? Shouldn't they always register the same, regardless of the OS being used, if all other things are equal?
Any thoughts or suggestions for a resolution are greatly appreciated.
BTW. Love the audio quality of these units.