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???
07/03/09 09:16
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#166695 - Not quite
Responding to: ???'s previous message
Munish Kumar said:
Data segment for a classic 8051 is 128 Bytes & for an 8052 is 256 Bytes

No. The Data segment is only ever 128 bytes;
The additional "internal" (sic) RAM of the 8052 is Idata.

I was able to increase the buffer size to 239 with:
idata unsigned char image_buffer[239];

Beware that the Stack requires idata...

But what about my 508 Byte array? Seems I would have to use external RAM!?

You would have to use Xdata - which may or may not be physically "external" to the chip...

List of 14 messages in thread
TopicAuthorDate
How to use on-chip RAM for array storage in Keil?            01/01/70 00:00      
   Basics: 8052 Memory Spaces            01/01/70 00:00      
      The message doesn't exist            01/01/70 00:00      
   data, xdata            01/01/70 00:00      
      Incorrect            01/01/70 00:00      
         Getting it now....            01/01/70 00:00      
            Not quite            01/01/70 00:00      
               I got it completely now!            01/01/70 00:00      
   Some possible answers..Munish            01/01/70 00:00      
      Thanks!            01/01/70 00:00      
      "RAM" and "Data Memory" are not synonymous            01/01/70 00:00      
         Agreed            01/01/70 00:00      
      NO WAY            01/01/70 00:00      
         Thanks for correcting me            01/01/70 00:00      

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