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???
08/29/05 21:01
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 		 #100251 - Programming 89C5131 via hardware (2)
Responding to: ???'s previous message

Thus, if you want to parallel program, you must buy a programmer.

I have one, All-07 from Hilo Systems and it's pitty but support is stopped and many Atmel devices are supported but this one not. A new programmer is to expensive for only this chip.


Anyhow, the "normal" way to implement "private" bootloaders is just to put them in high memory, why do you need to overwrite the built in bootloader?

While playing with the developerkit, i found behaviour, i do
not like, i like if hardware direct connect and works, not
sometimes it runs and sometimes it doesn't.

While reverse enginering I have found a bug in the downloader. (1.0.3) In the developerkit 1.0.3 is preprogrammed and the
the devices for the pcb's have 1.0.2 with another bug in it.

This is for me a reason to reprogram the devices with only my new bootloader. I have written a fully interrupt driven USB statemachine and it works great and quick. I must program a workarround because of wrong initialisation routines in the bootloader from Atmel.

Private downloader is a good idea, but the initialisation bug is still present.

Anyway thanks for your reply.


List of 28 messages in thread
TopicAuthorDate
Programming 89C5131 via hardware            01/01/70 00:00      
   the chip manufacturers have become wise            01/01/70 00:00      
      Programming 89C5131 via hardware (2)            01/01/70 00:00      
         just one question            01/01/70 00:00      
            Programming 89C5131 via hardware (3)            01/01/70 00:00      
               one problem with this is that you have n            01/01/70 00:00      
                  Atmel contact            01/01/70 00:00      
                     here we go again            01/01/70 00:00      
                        self-timing            01/01/70 00:00      
                           FLIP issue (modern technologies)            01/01/70 00:00      
                              lifetime            01/01/70 00:00      
                              transparent erasure            01/01/70 00:00      
                                 to: Jan Waclawek            01/01/70 00:00      
                              You've go to be kidding            01/01/70 00:00      
                                 self-timing            01/01/70 00:00      
                                    can you give me a reference to the fact            01/01/70 00:00      
                                       other way round            01/01/70 00:00      
         Contact Atmel            01/01/70 00:00      
      Bootloader bootloader            01/01/70 00:00      
         no way            01/01/70 00:00      
         Re: bootloader bootloader            01/01/70 00:00      
   Sounds like fun. Count me in.            01/01/70 00:00      
      Programming 89C5131 via hardware (2)            01/01/70 00:00      
   user bootloader?            01/01/70 00:00      
      Re: user bootloader?            01/01/70 00:00      
         what wrong?            01/01/70 00:00      
            Not, that old urban legend again            01/01/70 00:00      
               Atmel contact            01/01/70 00:00      

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