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C166 User's Guide
C166 Introduction Compiling Programs 
Language Extensions 
Keywords Memory Models Tiny Model Small Model Medium Model Compact Model Large Model HCompact Model HLarge Model XLarge Model Memory Types near far bdata ebdata idata sdata huge xhuge Memory Type Comparison Pointers with Memory Types Implicit Memory Types Type Qualifiers const volatile Data Types Special Function Registers sfr Types sbit Types bit Types Bit-Addressable Objects Function Declarations Return Values Register Bank Register Mask Interrupt Functions Fast Interrupts Cached Vectors Fast Register Banks Inline Functions Real-Time Function Tasks Inline Assembly Traditional Inline Assembly Extended Inline Assembly Operands Operators Register Use Use in Macro Definitions Preprocessor Advanced Programming Error Messages Library Reference AppendixLarge Model
The large memory model (selected with the LARGE directive) uses the segmented mode of the C16x/ST10/XC16x microcontroller. In this memory model:
- Variables are stored in far memory when they require more space than defined by the HOLD directive.
- Functions are stored in far memory and are accessed using far calls.
This memory model is the best choice for 80C166 programs that have large code and data requirements.
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