C51: Variables Created in XDATA Using Small Model

Information in this article applies to:

• C51 All Versions

QUESTION

Although I select Memory Model Small: Variables in DATA, the data variables in my program are being created in extended memory (XDATA). How can this happen?

ANSWER

Somewhere in your source code you have a #pragma statement specifying the LARGE or LA control directive. When the compiler finds this directive in the source code, it builds local variables and data segments in extended memory (XDATA) instead of using the Memory Model selection in the µVision project.

MORE INFORMATION

• Refer to LARGE in the Cx51 User's Guide.

SEE ALSO

• C51: Large Directive

Last Reviewed: Thursday, February 25, 2021