µVISION: OPTIMIZING VARIABLE MEMORY TYPES

Information in this article applies to:

• C166 Version 4.02
• C51 Version 6.00

SYMPTOMS

When creating large programs with numerous global variables, variable memory spaces may be optimized to provide faster access and smaller generated code.

CAUSE

Frequently used variables may be moved from the default memory space into a more efficiently accessed memory area.

RESOLUTION

Use the source browser in µVision to display the variables used in your program. Click on the Uses column to sort the list of variables by the number of times the variable is used. Modify your code to locate the most frequently used variables in near memory (if possible). This will speed up access to these variables.

MORE INFORMATION

Refer to page 42 in the Getting Started and Creating Applications with µVision and the 166/ST10 User's Guide 07.99.

SEE ALSO

• µVision: SOURCE BROWSER PROBLEMS WITH OBJECT DIRECTORY
• µVision: ENABLING THE SOURCE BROWSER

Last Reviewed: Wednesday, August 03, 2005