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UM017105-0511 Startup Files
Zilog Developer Studio II – ZNEO™
User Manual
187
Startup Files
The start-up or C run-time initialization file is an assembly program that performs required
start-up functions and then calls
main, which is the C entry point. The start-up program
performs the following C run-time initializations:
1. Initializes the stack pointer and stack overflow register.
2. Initializes the external interface if enabled (see the description of the Configure Target
Dialog Box on page 76).
3. Clears the
_Near and _Far uninitialized variables to zero.
4. Sets the initialized
_Near and _Far variables to their initial value from _Erom.
5. Allocate space for interrupt vectors.
6. Allocate space for the
errno variable used by the C run-time libraries.
Table 14 lists the start-up files provided with the ZNEO C-Compiler.
Table 14. ZNEO Startup Files
Name Description
lib\zilog\startups.obj C start-up object file for small model.
src\boot\common\startups.asm C start-up source file for small model.
lib\zilog\startupl.obj C start-up object file for large model.
src\boot\common\startupl.asm C start-up source file for large model.
lib\zilog\startupexkl.obj C start-up object file (large model) with external interface set up for
devices with Port K.
lib\zilog\startupexl.obj C start-up object file (large model) with external interface set up for
devices without Port K.
src\boot\common\startupexl.asm C start-up source file (large model) with external interface set up.
lib\zilog\startupexks.obj C start-up object file (small model) with external interface set up for
devices with Port K.
lib\zilog\startupexs.obj C start-up object file (small model) with external interface set up for
devices without Port K.
src\boot\common\startupexs.asm C start-up source file (small model) with external interface set up.
- User Manual 1
- UM017105-0511 2
- Revision History 3
- ZDS II System Requirements 5
- Zilog Technical Support 7
- Table of Contents 9
- List of Figures 21
- List of Tables 27
- Chapter 1. Getting Started 29
- Add a File to the Project 34
- Set Up the Project 36
- 5. Click the 38
- Figure 10 39
- 7. Click the 39
- 9. Click the 40
- Development Environment 43
- Toolbars 44
- File Toolbar 45
- Build Toolbar 46
- Find Toolbar 47
- Command Processor Toolbar 47
- Debug Toolbar 48
- Debug Windows Toolbar 50
- Project Workspace Window 51
- Edit Window 52
- Using the Context Menus 53
- Using Bookmarks 54
- Output Windows 57
- Menu Bar 59
- File Menu 60
- Edit Menu 68
- Manage Breakpoints 71
- View Menu 72
- Project Menu 73
- Add Files 74
- Remove Selected File(s) 74
- Settings 74
- Menu Bar UM017105-0511 80
- UM017105-0511 Menu Bar 103
- Build Menu 111
- Manage Configurations 112
- Debug Menu 114
- Tools Menu 115
- Start Address 118
- Firmware Upgrade 119
- Show CRC 119
- Calculate File Checksum 120
- Customize 121
- Options—General Tab 124
- Options—Editor Tab 125
- Display Line Number Margin 129
- Show Auto Completion List 129
- Show Call Tips Window 129
- Support UNICODE 129
- Options—Debugger Tab 130
- Window Menu 132
- Shortcut Keys 133
- Edit Menu Shortcuts 134
- Project Menu Shortcuts 134
- Build Menu Shortcuts 135
- Debug Menu Shortcuts 135
- Shortcut Keys UM017105-0511 136
- Chapter 3. Using the Editor 137
- Identify and Correct Mistakes 138
- Auto Completion 139
- Include file list box 141
- Call Tips 143
- Auto Indentation 145
- , ifma, macro 146
- Multiple Clipboards 147
- Line and Block Comments 149
- Abbreviations and Expansions 149
- Adding an Abbreviation 152
- Modifying an Abbreviation 153
- Removing an Abbreviation 153
- Expanding an Abbreviation 154
- Long Line Indicator 157
- UNICODE Support 159
- Auto Syntax Styler 160
- Code Folding Margin 163
- Line Number Margin 165
- Type Info Tips 167
- Figure 111. Type Info Tips 168
- Wrap Long Lines 170
- Indentation Guides 171
- Zoom In/Out 173
- Bookmarks 173
- Opening an Include File 176
- Mismatched Brace Highlighting 179
- Auto Conversion of “.” to “→” 181
- Language Extensions 184
- Default Storage Specifiers 188
- Memory Models 189
- Interrupt Support 190
- Interrupt Vector Setup 191
- Placement Directives 192
- String Placement 193
- Inline Assembly 194
- Char and Short Enumerations 195
- Type Sizes 197
- Predefined Macros 198
- Examples 199
- Calling Conventions 200
- Run Time Stack 201
- Special Cases 202
- Function Naming Convention 202
- Argument Locations 203
- Return Values 203
- Preserving Registers 204
- Assembly File 204
- Command Line Options 205
- Run-Time Library 205
- Zilog Header Files 206
- Zilog Functions 208
- SET_VECTOR 212
- Stack Pointer Overflow 214
- Startup Files 215
- Segment Naming 216
- Linker Referenced Files 218
- Linker Symbols 219
- Sample Linker Command File 220
- ANSI Standard Compliance 222
- Deviations from ANSI C 223
- Double Treated as Float 224
- Warning and Error Messages 225
- Address Spaces and Segments 240
- Segments 241
- Output Files 242
- Source Listing (.lst) Format 243
- Source Language Structure 244
- Comment Line 245
- Label Field 245
- Instruction 245
- Directive 245
- Assembler Rules 246
- Expressions 248
- Relational Operators 249
- Boolean Operators 249
- LOW and LOW16 Operators 249
- Decimal Numbers 250
- Hexadecimal Numbers 250
- Binary Numbers 250
- Octal Numbers 250
- Character Constants 251
- Operator Precedence 251
- Instruction Alignment 253
- Directives 254
- .COMMENT 255
- Data Directives 256
- BLKW Declaration Type 257
- DB Declaration Type 257
- DL Declaration Type 257
- DW Declaration Type 258
- DW24 Declaration Type 258
- ALIGN Clause 259
- ORG Clause 259
- SPACE Clause 260
- .SHORT_STACK_FRAME 264
- .TAG Directive 269
- .UNION Directive 270
- .WITH and .ENDWITH Directives 271
- Conditional Assembly 272
- Macro Definition 275
- Concatenation 276
- Macro Invocation 277
- Local Macro Labels 277
- Optional Macro Arguments 277
- Exiting a Macro 278
- Anonymous Labels 279
- Local Labels 279
- Label Spaces 279
- Source Language Syntax 280
- Linker Functions 287
- Invoking the Linker 288
- Linker Commands 288
- MAXHEXLEN 295
- MAXLENGTH 296
- SEARCHPATH 298
- SEQUENCE 298
- SPLITTABLE 299
- UNRESOLVED IS FATAL 300
- WARNING IS FATAL 300
- Linker Expressions 301
- & (And) 302
- BASE OF Versus LOWADDR OF 303
- COPY BASE 304
- COPY TOP 304
- / (Divide) 304
- HIGHADDR 305
- * (Multiply) 306
- Decimal Numeric Values 306
- Hexadecimal Numeric Values 306
- << (Shift Left) 307
- >> (Shift Right) 307
- - (Subtract) 307
- Sample Linker Map File 308
- Troubleshooting the Linker 323
- ZNEO Memory Layout 329
- Unconventional Memory Layouts 335
- Program Configurations 336
- C Program Setup 338
- Assembly Program Setup 338
- Chapter 8. Using the Debugger 355
- Status Bar 356
- Code Line Indicators 356
- Debug Windows 357
- Clock Window 359
- Memory Window 359
- Change Values 360
- View or Search for an Address 361
- Fill Memory 362
- Save Memory to a File 363
- Load a File into Memory 363
- Watch Window 365
- Add New Variables 366
- Remove an Expression 366
- View a Hexadecimal Value 366
- Locals Window 367
- Call Stack Window 368
- Symbols Window 368
- Disassembly Window 369
- Simulated UART Output Window 370
- Using Breakpoints 371
- Inserting Breakpoints 372
- Viewing Breakpoints 372
- Moving to a Breakpoint 373
- Enabling Breakpoints 373
- Disabling Breakpoints 374
- Removing Breakpoints 374
- from the context menu 375
- Command Line 377
- Compiler Command Line Options 382
- Linker Command Line Options 385
- Processor 387
- Sample Command Script File 391
- Assembler Options 404
- Compiler Options 405
- Debugger Options 406
- General Options 406
- Librarian Options 406
- Linker Options 407
- Executing Flash Commands 416
- Standard Header Files 420
- Errors <errno.h> 421
- Diagnostics <assert.h> 422
- Limits <limits.h> 423
- Mathematics <math.h> 426
- Hyperbolic 427
- Exponential 427
- Functions 429
- Input/Output <stdio.h> 430
- Standard Functions 435
- Synopsis 438
- Glossary 487
- Glossary UM017105-0511 494
- UM017105-0511 Index 495
- Numerics 496
- Index UM017105-0511 498
- File toolbar 17 503
- OMF695 format 215, 216 511
- Index UM017105-0511 518
- Customer Support 519
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