I have some problems with my R990H drives:
First I worked with one drive only and made the custom cable as described in the manual. This setup works well, I am able to see all the values of the drive and to tune it. However, when I use the motherboard and the special made SPI connector, all the values are rapidly changing or the program sees no drives or it says that I have an old revision number of the firmware. In other words something is wrong with the communication between th pc and the drives.
Can someone point me to the right direction?