Peter Homann wrote: > Jon, > > IIRC correctly the pre CPLD drives did not have full step morphing. Also the > new drives have a much improved recirculation sequencing. This means that > heat > sinking requirements for the drives are greatly reduced. > Right, I agree about the recirculation change, but I seem to recall that the full step morphing was mentioned a LONG time ago. My memory could be faulty on that, too. > Also the advantage of the CPLD design is that it makes it harder to reverse > engineer the drives, as the Chinese did with the old one some years ago > Well, I hope so, as Mariss deserves a break on the copying of his work. I've heard rumors that the readback protection on the Xilinx parts could be defeated with some effort. I have no idea how easy or hard that might be.
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