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???
05/31/06 20:55
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 		 #117435 - in those rare cases
Responding to: ???'s previous message
At the same time, it is nasty, if something trnasmits into your gadget when it undergoes RESET: it can go into the bootloader mode falsely.
In those rare cases go back to hard ISP enable and have a signal coming out of the uC when your program starts enable the serial transceiver. Of course, you need a switch/nugget/wire to disable that function to allow ISP.

of course since Fortunately, the bootloader is in FLASH, so it can be modified you can remove that activation and use (a modified) NoTouch instead.

Erik


List of 38 messages in thread
TopicAuthorDate
8051 optimal PCB setup            01/01/70 00:00      
   program ROM?            01/01/70 00:00      
      I object to the language            01/01/70 00:00      
   Simplest            01/01/70 00:00      
   simplest SBC schematic:            01/01/70 00:00      
   Try AT89S52            01/01/70 00:00      
   in addition            01/01/70 00:00      
      whyy not go all the way            01/01/70 00:00      
         P89C668?            01/01/70 00:00      
             but the 66x has (from memory)            01/01/70 00:00      
               So what's V mean?            01/01/70 00:00      
                  why 'V' I do not know, but they have a V            01/01/70 00:00      
                     Soft Ice            01/01/70 00:00      
                     V, + and -            01/01/70 00:00      
                        in those rare cases            01/01/70 00:00      
                  V vs C            01/01/70 00:00      
         Hasn't anybody produced a part with ...            01/01/70 00:00      
            yes            01/01/70 00:00      
               Sadly, it's not a "part"            01/01/70 00:00      
                  a faulty sort            01/01/70 00:00      
                     still no "normal" part            01/01/70 00:00      
                        it also wouldn't take much to build one            01/01/70 00:00      
                           it's a rare case            01/01/70 00:00      
                              True, fer shurr ...            01/01/70 00:00      
                                 all my designs is one of 2            01/01/70 00:00      
                                    I was just discussing that ...            01/01/70 00:00      
                                       ROM RAM swap            01/01/70 00:00      
                                          are you trolling for a food-fight again?            01/01/70 00:00      
                                             No, i DO not know, That does not mean I            01/01/70 00:00      
                                                Just a minute ...            01/01/70 00:00      
                                                   any 51's?            01/01/70 00:00      
                                                      No ... I was referring to UBICOM            01/01/70 00:00      
                                                         easy            01/01/70 00:00      
                                                            you'd think they'd do it, then            01/01/70 00:00      
                                                               they do            01/01/70 00:00      
            the fattest '51            01/01/70 00:00      
               the fattest '51            01/01/70 00:00      
                  dunno            01/01/70 00:00      

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