 C166 User's Guide | |
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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 Register Use Use in Macro Definitions Preprocessor Advanced Programming Error Messages Library Reference AppendixMemory Models
The memory model determines the default memory type to use for variables and functions. The C166 Compiler provides seven memory models as shown in the following table:
| Directive | Memory Model | Variable Addresses | Function Addresses |
|---|---|---|---|
| TINY | Tiny Model | near | near Up to 64K Code Size |
| SMALL | Small Model | near | near Up to 64K Code Size |
| MEDIUM | Medium Model | near | far Unlimited Code Size |
| COMPACT | Compact Model | far | near Up to 64K Code Size |
| LARGE | Large Model | far | far Unlimited Code Size |
| HCOMPACT | HCompact Model | huge | near Up to 64K Code Size |
| HLARGE | HLarge Model | huge | far Unlimited Code Size |
| XLARGE | XLarge Model | xhuge | far Unlimited Code Size |
Note
- You may override the default memory type imposed by the memory model by explicitly declaring a variable or function with a memory type specifier.
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