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???
01/23/05 14:07
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 		 #85616 - Schematics
Responding to: ???'s previous message
Hi.
In my programmer AT89S8252 has, his own reset circuit, and it goes too, to the LPT section. (Could be that ?)

Attila said:
I created this LPT programmer, I can program any AVR with pony prog but AT89S8252 can't.


Like you said before..."If you created that LPT programmer", you must know very well...which is the difference between AVR and 89Sxx, or the 89S8252, ( talking about ISP characteristics ).

Analize, ISPDOS software and schematics...do you download it?
It's working fine.
Regards.

List of 29 messages in thread
TopicAuthorDate
AT89S8252 ISP serial programming            01/01/70 00:00      
   Atmel ISP cabel            01/01/70 00:00      
      Still not working            01/01/70 00:00      
         +5v supply            01/01/70 00:00      
            +5V            01/01/70 00:00      
               Have you tried another AT89S8252 chip?            01/01/70 00:00      
                  Maybe problem with the reset circuit?            01/01/70 00:00      
                     Programming cable length?            01/01/70 00:00      
                        More questions            01/01/70 00:00      
                           Even more questions            01/01/70 00:00      
                              at89s8252 programmer            01/01/70 00:00      
                              Yeah this could be a problem...            01/01/70 00:00      
                                 so not this...            01/01/70 00:00      
                                    Have you made this change?            01/01/70 00:00      
                                       Yipiajeeeeee It woooooorks            01/01/70 00:00      
                        More questions            01/01/70 00:00      
   89ISP In-system Programmer            01/01/70 00:00      
      But with other MCU it works            01/01/70 00:00      
   ISP programmer for AT89S8252            01/01/70 00:00      
   Pin 5 com port (GND) wired incorrectly.            01/01/70 00:00      
      Mistake on the scheme            01/01/70 00:00      
      New schematics            01/01/70 00:00      
         Schematics            01/01/70 00:00      
   ISPS DOS            01/01/70 00:00      
      multi system in your PC            01/01/70 00:00      
         Sorry Donny            01/01/70 00:00      
            sorry Alberto            01/01/70 00:00      
   reset level            01/01/70 00:00      
   a steady AT89s8252 programmer            01/01/70 00:00      

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