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Frieder Ferlemann
12/12/11 15:11
Read: 839 times
Old Europe


 
#185079 - above about 40 Mhz devices may need extra cycles
Responding to: Jan Waclawek's previous message
Hi Jan,

thanks for the table!)

Devices with high core frequency (c8051f120 and the likes) might need extra cycles due to instructions being or not being in cache (or prefetch).
(Or instructions which span more than one byte being or not being aligned to flash memory bus width of 16/32 bit).

Not sure how this could be represented in a table. Eventually footnotes would be fine?

Greetings,
Frieder

List of 19 messages in thread
TopicAuthorDate
'51 derivatives cycle comparison table updated      Jan Waclawek      12/11/11 15:29      
   above about 40 Mhz devices may need extra cycles      Frieder Ferlemann      12/12/11 15:11      
      silabs with cache      Jan Waclawek      12/13/11 15:27      
         Ok, a SILabs cache lesson      Erik Malund      12/14/11 06:22      
            Bytes      Michael Karas      12/14/11 11:08      
               ecc?      Per Westermark      12/14/11 12:44      
               not the cookies      Erik Malund      12/15/11 07:17      
                  Washed?      Michael Karas      12/15/11 09:55      
                     am I as has happened before ...      Erik Malund      12/15/11 10:10      
                        Is that how it's spelled?      Richard Erlacher      12/15/11 12:52      
                     re: Washed?      Andy Peters      12/16/11 09:35      
            jump cache miss penalty      Jan Waclawek      12/15/11 00:35      
               clarifications      Erik Malund      12/15/11 07:33      
               no cache for 50MHz      Maarten Brock      12/15/11 16:01      
                  surely not all      Jan Waclawek      12/16/11 07:13      
                     you missed a word      Erik Malund      12/16/11 07:18      
   more update      Jan Waclawek      01/02/12 15:21      
      Table suggestions      Jim Granville      02/14/12 23:52      
      Updated MC51 supports Cycle Define      Jim Granville      04/26/12 16:17      

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