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C251 User's Guide
C251 Introduction
Compiling Programs
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Startup Code
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Basic I/O
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251-Specific Optimizations
Options for Code Generation
Global Register Coloring
Segment Naming Conventions
Segment Types
Initialization Segments
Function Symbols
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Hardware Stack
Calculating Stack Size
Interfacing C Programs to Assembler
Global Variables
Function Parameters
Passing in Memory
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Function Return Values
Using the SRC Directive
Register Usage
Overlaying Segments
TINY Model
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XSMALL Model
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Data Storage Formats
Bit Variables
1-Byte Scalars
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The _at_ Keyword
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Library Reference
Appendix
2-Byte Scalars
Scalars of type signed int, unsigned int, signed short, unsigned short, enum, and memory-specific pointers that reference near, xdata or code are all stored using two bytes (16 bits). The high-order byte is stored first, followed by the low-order byte. For example, an integer value of 0x1234 is stored in memory as follows:
| Address | +0 | +1 |
|---|---|---|
| Contents | 0x12 | 0x34 |
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