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C166 User's Guide
C166 Introduction Compiling Programs Language Extensions Preprocessor 
Advanced Programming Sections, Classes, and Groups 
Special Sections Locating Sections Customization Files Startup Code STARTUP.A66 START167.A66 START_V2.A66 START_V3.A66 Basic I/O Memory Allocation TRAPS.C Optimizer Optimizer Options General Optimizations 80C166-Specific Optimizations Global Register Coloring DPP Registers Stacks System Stack User Stack Stack Sizes System Stack Size User Stack Size XBUS Memory and Peripherals On-chip XRAM XBUS Peripherals Interfacing C to Assembler Function Parameters Function Return Values Using the SRC Directive Register Usage Example Routines TINY Model SMALL Model COMPACT Model MEDIUM Model LARGE Model Data Storage Formats Bit Variables 1-byte Scalars 2-byte Scalars 4-byte Scalars float Scalars float Errors double Scalars double Errors near Pointers far Pointers huge Pointers xhuge Pointers Absolute Memory Access Absolute Access Macros Linker Location Controls Debugging Error Messages Library Reference AppendixCustomization Files
The C166 Compiler provides a number of source files you can adapt to your hardware platform. The files contain:
- Startup Code that executes upon reset.
- Basic I/O routines with code performing low-level stream I/O.
- Memory Allocation code.
- TRAPS.C code for error detection.
The code contained in these files is already compiled or assembled and is included in the C library. When you link your program, the code from the library is automatically included.
When you use the µVision IDE, we recommend to copy the customization files into your project folder to make your modifications. The modified version of the file can be added to your project.
When you use the command-line tools, you must include the object files generated from the customization files on the linker command line. The example shows how the files STARTUP.A66 and PUTCHAR.C are included:
L166 MYMODUL1.OBJ, MYMODUL2.OBJ, STARTUP.OBJ, PUTCHAR.OBJ
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