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12/17/07 09:10
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 		 #148359 - Russ have you done this before?
Responding to: ???'s previous message
Thanks Russ. i really appreciate your painstaking reply. You have really taken some time out to give me a detailed answer, so that nothing is left to imagination hence creating ambiguities.

I have some queries :

a) Have you done this before or seen it being done by someone else? this will help me gauge my chances of success.

b) secondly,

Russ Cooper said:

So in the end, your code memory needs to contain four bytes of data: 74h in location 0, 12h in location 1, 80h in location 2, and FCh in location 3.

You have to decode the hex file as shown above in order to find out what binary data goes into memory, but once that binary data is in the memory, that's it -- it's ready to execute.

-- Russ


I had studied this link a month back when i was starting the development of my checksum algorithm. i have calculated the checksum according to the method employed in the above URL.

i only have to place the "data bytes" in the addresses specified by each record. right!!. regardless of the jump instructions and the variable declarations ?.
The databytes would take care of all this stuff?

Thanx again Russ, your reply has really been very helpful


List of 59 messages in thread
TopicAuthorDate
Executing from External Ram ; THE SEQUEL            01/01/70 00:00      
   You need to think more precisely            01/01/70 00:00      
      the whole thing seems like nonsense!            01/01/70 00:00      
         Why process the Intel-HEX file locally?            01/01/70 00:00      
            ????            01/01/70 00:00      
               Andy is right            01/01/70 00:00      
                  It was actually Richard's idea            01/01/70 00:00      
                     Thanx Richards            01/01/70 00:00      
         I was just referring to a PERFORMANCE METRIC            01/01/70 00:00      
            No PC involved??            01/01/70 00:00      
               PC involved            01/01/70 00:00      
      I Apologize for the Confusion, Andy            01/01/70 00:00      
         Don't apologise to me            01/01/70 00:00      
            Please Elaborate; ANDY, Eric, Richard and Reza            01/01/70 00:00      
               Maybe an example will help            01/01/70 00:00      
                  Russ have you done this before?            01/01/70 00:00      
                     Done what before?            01/01/70 00:00      
                        Yes            01/01/70 00:00      
                           Yes            01/01/70 00:00      
                               :-)            01/01/70 00:00      
                              Think Basic-52            01/01/70 00:00      
                                 RAM IIRC?            01/01/70 00:00      
                                    IIRC            01/01/70 00:00      
                                       :-), Not your Fault            01/01/70 00:00      
               Files            01/01/70 00:00      
                  YES the Content!!            01/01/70 00:00      
   I\'m greatly impressed!!!!            01/01/70 00:00      
      Thanks a lot Reza.            01/01/70 00:00      
         Atmel            01/01/70 00:00      
            :-)            01/01/70 00:00      
               OMG! is your OS 8bit?            01/01/70 00:00      
                  Well!, THIS is a VERY BIG ISSUE            01/01/70 00:00      
            no, dont            01/01/70 00:00      
               ERIC, you have amazed me!!!            01/01/70 00:00      
               Can you give me a rough estimate ? Eric            01/01/70 00:00      
                  I have no idea            01/01/70 00:00      
                     ARM Book?            01/01/70 00:00      
                  $1.50USD ARM            01/01/70 00:00      
                     Of course it is, however            01/01/70 00:00      
         Price issue            01/01/70 00:00      
   Why 3 MCUs?            01/01/70 00:00      
      The Reasons            01/01/70 00:00      
         AVRs won't have this problem            01/01/70 00:00      
            OK            01/01/70 00:00      
               Changing processor            01/01/70 00:00      
                  My two cents            01/01/70 00:00      
                  ARM is the right choice for the project of this Sc            01/01/70 00:00      
            I'd be VERY careful using ATMEL!            01/01/70 00:00      
               prototype testing is necessary            01/01/70 00:00      
                  Yes, you have to test them under extremes            01/01/70 00:00      
               Richards, can you suggest an alternative?            01/01/70 00:00      
                  NXP            01/01/70 00:00      
                  In short ...            01/01/70 00:00      
            Neither would a comparable 8051!            01/01/70 00:00      
               8051 is not french wrench            01/01/70 00:00      
                  AVR can't execute from external RAM            01/01/70 00:00      
                     Russell Bull is right            01/01/70 00:00      
                        just like any other uC            01/01/70 00:00      
   Started Again after the holidays            01/01/70 00:00      

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