Big massive in RAM 9S12XEP100

dlp — Tue, 24 Apr 2012 19:36:31 GMT

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...

Re: Big massive in RAM 9S12XEP100

kef — Tue, 24 Apr 2012 20:29:18 GMT

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.

Re: Big massive in RAM 9S12XEP100

dlp — Tue, 24 Apr 2012 22:36:07 GMT

Super! I am very THX!

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Big massive in RAM 9S12XEP100

Re: Big massive in RAM 9S12XEP100

Re: Big massive in RAM 9S12XEP100