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???
09/22/06 12:32
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 		 #124866 - bootvector lost already
Responding to: ???'s previous message
Erik Malund said:
However it was/is in the errata "if you use RC reset you may los the bootvector"

I don't doubt that; but in this context, we are already almost sure the bootvector is lost; my point is, I don't know if with RC reset it can start transmitting spontaneously even if there is no application; with proper reset if it starts transmit spontaneously it's 100% not empty (erased=all FFs).

Hoooooops sorry this is RC2 not RD2, OK I don't know what will that do (RD2 when erased, runs through 56k FF (= mov r7,a) and goes into bootloader regardless of bootvector).

JW

List of 49 messages in thread
TopicAuthorDate
Need Help: Problem with ISP on P89C51RC2HBA            01/01/70 00:00      
   application?            01/01/70 00:00      
      only if he misspelled            01/01/70 00:00      
         my bad            01/01/70 00:00      
            Still            01/01/70 00:00      
      application?            01/01/70 00:00      
         FIRST, second and third            01/01/70 00:00      
         I'm afraid...            01/01/70 00:00      
            It's in the errata            01/01/70 00:00      
               it's a stupid practice...            01/01/70 00:00      
                  not from their perspective            01/01/70 00:00      
                     we discussed this already many times            01/01/70 00:00      
                     Why not make them OTP's, then?            01/01/70 00:00      
                        they are if you follow the instructions            01/01/70 00:00      
                           compromise            01/01/70 00:00      
                              just exactly HOW do you "push" on the mfg?            01/01/70 00:00      
                                 push on the mfg            01/01/70 00:00      
                                    only works when you spend MONEY            01/01/70 00:00      
                     An Old chip will known Devil ?            01/01/70 00:00      
               bootvector lost already            01/01/70 00:00      
                  there IS code in the chip            01/01/70 00:00      
                     how do you mean?            01/01/70 00:00      
                        Rx+            01/01/70 00:00      
               I found an errata            01/01/70 00:00      
            I'm afraid...            01/01/70 00:00      
               drop me an e-mail via my profile            01/01/70 00:00      
            I'm afraid...            01/01/70 00:00      
   first, second third            01/01/70 00:00      
      Must be an Atmel's micro...            01/01/70 00:00      
         naah, that is NOT the issue            01/01/70 00:00      
      first, second third            01/01/70 00:00      
      first, second third: second            01/01/70 00:00      
         boot vector lost            01/01/70 00:00      
   Try this            01/01/70 00:00      
      Try this            01/01/70 00:00      
         FM            01/01/70 00:00      
            FM            01/01/70 00:00      
               FM can not restore a lost bootvector            01/01/70 00:00      
               it's too late            01/01/70 00:00      
                  it's too late            01/01/70 00:00      
                     do not            01/01/70 00:00      
                        Oh...            01/01/70 00:00      
                           no chip 'requires' reset IC but ALL flash based ..            01/01/70 00:00      
                           the trouble with RC resets...            01/01/70 00:00      
                              How, exactly, did you arrive at this notion?            01/01/70 00:00      
                                 experience...            01/01/70 00:00      
                                 the reason            01/01/70 00:00      
                        Go for the "V"!            01/01/70 00:00      
                           while these are valid concerns            01/01/70 00:00      

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