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C51: USE OF DUAL DATA POINTERS
Information in this article applies to:
- C51 All Versions
SYMPTOM
When I enable dual data pointer support for my device, I notice no change in the object code generated by the compiler.
CAUSE
The Keil toolset only provides dual data pointer support via the C libraries. It does not generate DDP instructions when compiling user code.
RESOLUTION
If you wish to take advantage of DDP support, use one of the following library functions.
- MEMCPY
- MEMMOVE
- MEMCMP
- STRCPY
- STRCMP
SEE ALSO
- Refer to Dallas 320, 420, 520, and 530 in the C51/CX51 User's Guide.
Last Reviewed: Friday, July 15, 2005
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