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???
12/14/07 21:52
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Msg Score: +1
 +1 Good Question		 #148248 - Executing from External Ram ; THE SEQUEL
I am starting a new thread on executing code from the External ram in a p89c41rd+ or 89c51rd2. this thread is a sequel to the thread :
http://www.8052.com/forum/read.phtml?id=145879
Which has somewhat served its purpose.

I am going to give the outline of my future work. if you find anything wrong in the following then please point it out.

i am going to execute the HEX file from the external ram.
I have implemneted the checksum algorithm.
Now i would be converting the Intel hex file into binary executable format.
for this conversion i would strip off the , number_databytes, starting adress,type_of_record and checksum field from the hex file.

after this i would place each record of the hex file( i.e. data bytes) in the specific memory locations as specified by each record in the hex file.

i am also curious about the different lengths of the records of the HEX file. how many instructions does each record specify? and do the records also have the info about the variables declared in the code which is to be run from the external ram?



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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