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???
12/17/07 16:00
Modified:
  12/17/07 16:02
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 		 #148384 - Yes
Responding to: ???'s previous message
Shehryar said:
Yes, Running an 8051 program from an external memory. Especially an external RAM.

Yes, I have run an 8051 program from an external memory many, many times. Some years ago, before onboard flash memory became common, the program in many/most 8051 systems was stored in an external EPROM.

I don't remember ever working on a project where the code was in external RAM. However, whether the external memory is EPROM or RAM does not make any difference to the things we have been talking about (decoding hex files, what goes into the memory, etc.). It only affects how you have to connect the RAM to the 8051 device.

If you are questioning the accuracy of the information in my previous message, you can be pretty sure that others on the forum would have corrected me with great enthusiasm by now if something was wrong! :) That's one of the good things about this forum--bad information gets exposed as such pretty quickly.

Best regards,

-- Russ


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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