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???
05/04/07 07:52
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 		 #138604 - yes nonvolatile, but unaccessible
Responding to: ???'s previous message
Richard Erlacher said:
Lattice, Altera, and Xilinx all have relatively new technology and ACTEL has had nonvolatile FPGA's for quite some time, that operate without an external boot PROM. You could build in a counter for number of power-cycles, and make it relatively large.

Usually, you can't.

The nonvolatile storage is usually unaccessible from the FPGA itself...

JW


List of 31 messages in thread
TopicAuthorDate
Shameless attempt for marketing feedback            01/01/70 00:00      
   I cannot see where the sales would come from            01/01/70 00:00      
      Jez can\'t, I can            01/01/70 00:00      
         devices/boards rather than bitstream            01/01/70 00:00      
            DMA question            01/01/70 00:00      
               me?            01/01/70 00:00      
   when You start?            01/01/70 00:00      
   I think            01/01/70 00:00      
      C and bitstream            01/01/70 00:00      
         another question            01/01/70 00:00      
            Emulator            01/01/70 00:00      
               I would, or no sell            01/01/70 00:00      
                  throw away JTAG            01/01/70 00:00      
                     who cares how the emulator connects, the important            01/01/70 00:00      
                        the marketing dept. cares            01/01/70 00:00      
                           RTFM            01/01/70 00:00      
                              if you want to sell the chips...            01/01/70 00:00      
         Security            01/01/70 00:00      
            Reverse Engineering            01/01/70 00:00      
               If you're worried about IP ...            01/01/70 00:00      
                  the "experts"            01/01/70 00:00      
               Reverse engineering bitstreams            01/01/70 00:00      
            security of fpga designs is taken seriously            01/01/70 00:00      
   Well, what I'd go for ...            01/01/70 00:00      
   at least it keeps the honest people honest            01/01/70 00:00      
      This is where people misunderstand the difficulty            01/01/70 00:00      
         Now there IS nonvolatile storage            01/01/70 00:00      
            yes nonvolatile, but unaccessible            01/01/70 00:00      
               Is that a problem, Jan?            01/01/70 00:00      
                  this depends on the technology            01/01/70 00:00      
                     It's all one package ...            01/01/70 00:00      

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