 C166 User's Guide | |
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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 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 AppendixStartup Code
Startup Code is the program code that executes immediately after reset. The startup code includes:
- The reset vector.
- Code to setup SYSCON and BUSCON SFRs.
- Code to clear memory.
- Code to initialize global variables.
There are several different startup files available.
- STARTUP.A66 contains the startup code for 80C166-compatible devices.
- START167.A66 contains the startup code for C161, C163, C164, C165, and C167 devices.
- START_V2.A66 contains the startup code for the XC16x devices.
All startup files are located in the /KEIL/C166/LIB folder. You should include a copy of the appropriate startup file in your project.
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