Big massive in RAM 9S12XEP100

[dlp]

 Hi!

 I need defined big massive in RAM processor. Size 0x1250 bytes. How do I create it using just two memory's page?

 I need load big massive and after send automatic...

[kef · Accepted solution]

You have 8k of unpaged RAM at 0x2000-0x3FFF. Your 4.5k massive should fit this easily. If you can't use nonpaged RAM, then you should use global memory addressing, since your array won't fit 4kB sized R-page. To do so, you need to

1) edit PRM file to create big continuous RAM segment, specifying start and end of segment using global addresses:

SEGMENTS

      ...

      RAM_FBFCFD    = READ_WRITE  DATA_FAR           0x0FB000'G TO 0xFDFFF'G; // 12k segment for global addressing

      ...

END

PLACEMENT

      ...

      PAGED_G_RAM       INTO RAM_FBFCFD; \

      ...

END

2) Define end declare your array between following DATA_SEG pragmas:

#pragma DATA_SEG __GPAGE_SEG PAGED_G_RAM

 char arr[0x1250];

#pragma DATA_SEG DEFAULT

3) Make sure -D__FAR_DATA string is included in compiler options string.

[dlp]

 Super! I am very THX!