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???
01/13/11 23:08
Modified:
  01/13/11 23:10
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 		 #180575 - I take this back...
Responding to: ???'s previous message
... partially:
Jan Waclawek said:
... that this behaviour is simply not specified in the "bible" (whichever version)... no mention of whether the said flags can be written by software at all!
The latter IS present in the True One "Bible", and also in the NXP one. Can you spot it? Was it easy to find, especially if one searches

However, this is omitted from the Atmel version. I have a older Atmel "bible", doc0499, which does mention it; I believe this is not linked to directly from the current Atmel pages (although google will find it given appropriate keywords). This might mean omission/neglecting (possibly when merging in the Temic documentation); or intent: the modern Atmel '51 derivatives might NOT behave in this way!

Still I believe the OP is innocent in the "did not search" item of prosecution.

JW

PS. It appears that the current aggregate Atmel AT89S52 documentation (i.e. current datasheet + "bible") does not mention the function of IP (interrupt priority) register at all, except its address in the SFR table!

List of 28 messages in thread
TopicAuthorDate
What happen if I write 1 to Interrupt flag register?            01/01/70 00:00      
   which register??            01/01/70 00:00      
   Be specific about ur queries            01/01/70 00:00      
   if 8051            01/01/70 00:00      
   the register            01/01/70 00:00      
      this is a quite tricky question...            01/01/70 00:00      
         congrats, Robin            01/01/70 00:00      
         Re: tricky question            01/01/70 00:00      
         it was me,            01/01/70 00:00      
         Didn't search first            01/01/70 00:00      
            read "the bible"            01/01/70 00:00      
            the truth is...            01/01/70 00:00      
               it does state            01/01/70 00:00      
               I take this back...            01/01/70 00:00      
                  Disagree            01/01/70 00:00      
      Atmel hardware manual            01/01/70 00:00      
         I'll take the answer as :            01/01/70 00:00      
            Be Careful            01/01/70 00:00      
               oh, they do            01/01/70 00:00      
            re: I don't even know what "bible" you all mention in the po            01/01/70 00:00      
               "bible"            01/01/70 00:00      
            Diving into the AT89S52            01/01/70 00:00      
               just a note            01/01/70 00:00      
                  Re: just a note            01/01/70 00:00      
                     MIDI project, etc            01/01/70 00:00      
   oh, and we forgot to ask the usual question:            01/01/70 00:00      
      since i do not know what 'that' is I guess            01/01/70 00:00      
      SWI            01/01/70 00:00      

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