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.

Jon

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