RTX51: REENTRANT FUNCTIONS IN LARGE OR SMALL MEMORY MODELS

Information in this article applies to:

• RTX51 Version 3.10

QUESTION

The RTX51 manual states that reentrant functions are only supported in the compact memory model. Is there any way that reentrant functions may be used in the large or small memory models as well?

ANSWER

Yes. Choose the memory model you desire for your project and declare the reentrant functions as using the compact memory model. For example:

void foo(void) compact reentrant
{
  ;
}

The compact memory model will be used only for those functions specified as compact. Note that you must still initialize the compact model reentrant stack.

Note that RTX51 supports compact model reentrant functions only. Reentrant functions (in RTX51) cannot be declared for small or large memory model.

MORE INFORMATION

• Refer to Reentrant Functions in the Cx51 User's Guide.
• Refer to Memory Models in the Cx51 User's Guide.
• Refer to pages 119 and 120 in the RTX51 User's Guide (04.98) for more information on reentrant stacks and functions.

SEE ALSO

• RTX51: REENTRANT TASKS
• RTX51: DIRECT ACCESSING OF P2
• RTX51: CALLING PRINTF FROM MULTIPLE TASKS
• C51: MIXING REENTRANT FUNCTIONS AND NON-REENTRANT FUNCTIONS
• C51: REENTRANT FUNCTIONS AND THE REENTRANT STACK POINTER
• RTX51: REENTRANT FUNCTIONS

Last Reviewed: Wednesday, March 29, 2006