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Cx51 User's Guide
Cx51 Introduction
Compiling Programs
Environment Settings
Command Prompt
ERRORLEVEL
Output Files
Listing (LST) File
Object (OBJ) File
Preprocessor (I) File
Source (SRC) File
Directives
Directive List
Reference
AREGS
ASM
BROWSE
BSE
CODE
COMPACT
COND
DEBUG
DEFINE
DISABLE
EJECT
ENDASM
ENUMINT
FARWARNING
FIXXC800
FLOATFUZZY
INCDIR
INTERVAL
INTPROMOTE
INTVECTOR
LARGE
LISTINCLUDE
MAXARGS
MDU_F120
MDU_R515
MOD517
MODA2
MODAB2
MODC2
MODDA
MODDP2
MODH2
MODP2
NOAMAKE
NOAREGS
NOCOND
NOEXTEND
NOINTPROMOTE
NOINTVECTOR
NOMDU_F120
NOMDU_R515
NOMOD517
NOMODA2
NOMODAB2
NOMODC2
NOMODDA
NOMODDP2
NOMODH2
NOMODP2
NOOBJECT
NOPREPROCESS
NOPRINT
NOREGPARMS
OBJECT
OBJECTADVANCED
OBJECTEXTEND
OMF2
ONEREGBANK
OPTIMIZE
ORDER
PAGELENGTH
PAGEWIDTH
PREPRINT
PRINT
PSOC
REGFILE
REGISTERBANK
REGPARMS
RESTORE
RET_PSTK
RET_XSTK
ROM
SAVE
SMALL
SRC
STRING
SYMBOLS
TABS
USERCLASS
VARBANKING
WARNINGLEVEL
XCROM
Language Extensions
Preprocessor
Advanced Programming
8051 Derivatives
Error Messages
Library Reference
Appendix
Directive List
The following table is an alphabetical list of the control directives available in the Cx51 Compiler.
| Directive | Group | Description |
|---|---|---|
| AREGS | Object | Enables absolute register (ARn) addressing. |
| ASM | Source | Marks the beginning of an inline assembly block. |
| BROWSE1 | Object | Enables source browser information. |
| CODE1 | Listing | Includes generated assembly in the listing file. |
| COMPACT1 | Object | Selects the COMPACT memory model. |
| COND1 | Listing | Includes (in the listing file) conditional source lines skipped by the preprocessor. |
| DEBUG1 | Object | Includes debugging information in the object file. |
| DEFINE2 | Source | Defines preprocessor names on the command line. |
| DISABLE | Object | Disables interrupts for the duration of a single function. |
| EJECT | Listing | Inserts a form feed character into the listing file. |
| ENDASM | Source | Marks the end of an inline assembly block. |
| FARWARNING | Object | Issue a warning when only 16-bit offset calculations are performed for far addresses. |
| FIXXC800 | Object | Disable generation of MOV dir,dir
instruction with two SFR registers. |
| FLOATFUZZY | Object | Sets the number of bits rounded for floating-point comparisons. |
| INCDIR1 | Source | Sets additional include file paths. |
| INTERVAL1 | Object | Specifies the interval to use for interrupt vectors. |
| INTPROMOTE1 | Object | Enables ANSI integer promotion rules. |
| INTVECTOR1 | Object | Specifies the base address for interrupt vectors. |
| LARGE1 | Object | Selects the LARGE memory model. |
| LISTINCLUDE | Listing | Adds contents of include files into the listing file. |
| MAXARGS1 | Object | Specifies the maximum size of variable-length argument lists. |
| MOD517 | Object | Enables support for additional hardware features of the Infineon 80C517 and compatible devices. |
| MODA2 | Object | Enables dual data pointer support for the Atmel 82x8252 and compatible devices. |
| MODAB2 | Object | Enables dual data pointer support for the Analog Devices Microconverters (ADuC B2 devices). |
| MODDA | Object | Enables arithmetic accelerator support for the Dallas 80C390, 80C400, and 5240. |
| MODDP2 | Object | Enables dual data pointer support for the Dallas 320, 520, 530, 550, and compatible devices. |
| MODP2 | Object | Disables dual data pointer support for Philips and Atmel devices. |
| NOAMAKE1 | Object | Excludes build information from the object file. |
| NOAREGS | Object | Disables absolute register (ARn) addressing. |
| NOCOND1 | Listing | Excludes (from the listing file) conditional source lines skipped by the preprocessor. |
| NOEXTEND1 | Source | Disables Cx51 extensions to ANSI C. |
| NOINTPROMOTE1 | Object | Disables ANSI integer promotion rules. |
| NOINTVECTOR1 | Object | Disables generation of interrupt vectors. |
| NOMOD517 | Object | Disables support for additional hardware features of the Infineon 80C517 and compatible devices. |
| NOMODA2 | Object | Disables dual data pointer support for the Atmel 82x8252 and compatible devices. |
| NOMODAB2 | Object | Disables dual data pointer support for the Analog Devices Microconverters (ADuC B2 devices). |
| NOMODDA | Object | Disables arithmetic accelerator support for the Dallas 80C390, 80C400, and 5240. |
| NOMODDP2 | Object | Disables dual data pointer support for the Dallas 320, 520, 530, 550, and compatible devices. |
| MODP2 | Object | Enables dual data pointer support for Philips and Atmel devices. |
| NOOBJECT1 | Object | Disables object file generation. |
| NOPRINT1 | Listing | Disables listing file generation. |
| NOREGPARMS | Object | Disables passing parameter in registers. |
| OBJECT1 | Object | Specifies the name for the object file. |
| OBJECTADVANCED1 | Object | Adds additional information to the object file for linker-level program optimizations. |
| OBJECTEXTEND1 | Object | Adds additional debugging information to the object file. |
| OMF21 | Object | Generates an OMF2 object module. |
| ONEREGBANK | Object | Generates code for programs that use only one register bank. |
| OPTIMIZE | Object | Specifies the level of optimization performed by the compiler. |
| ORDER1 | Object | Allocates storage for variables in the order in which they are declared. |
| PAGELENGTH1 | Listing | Specifies the number of lines on a page in the listing file. |
| PAGEWIDTH1 | Listing | Specifies the number of characters on a line in the listing file. |
| PREPRINT1 | Listing | Produces a preprocessor listing file with expanded macros. |
| PRINT1 | Listing | Specifies the name for the listing file. |
| PSOC1 | Object |
Generate interrupt vectors for
Cypress PSoC devices. |
| REGPARMS | Object | Enables passing parameter in registers. |
| RESTORE | Object | Restores settings for AREGS, REGPARMS, and OPTIMIZE directives. |
| RET_PSTK1 | Object | Uses the COMPACT model reentrant stack for return addresses. |
| RET_XSTK1 | Object | Uses the LARGE model reentrant stack for return addresses. |
| ROM1 | Object | Specifies the ROM model (SMALL, COMPACT or LARGE). |
| SAVE | Object | Saves settings for AREGS, REGPARMS, and OPTIMIZE directives. |
| SMALL1 | Object | Selects the SMALL memory model. |
| SRC1 | Object | Creates an assembler source file instead of an object file. |
| STRING1 | Object | Locates implicit string constants to xdata or far memory. |
| SYMBOLS1 | Listing | Includes a symbol list in the listing file. |
| TABS1 | Listing | Specifies the tab character expansion width for the listing file. |
| USERCLASS1 | Object | Renames memory classes which allows more flexible variable location. |
| VARBANKING1 | Object | Enables far memory type variables. |
| WARNINGLEVEL1 | Listing | Selects the level of warning detection. |
| XCROM1 | Object | Assumes const xdata variables are stored in ROM. |
Note
- These directives apply to the entire source file and may be specified only once on the command line or at the beginning of the source file using the #pragma statement. They may not be used more than once in a source file.
- Directives and arguments, with the exception of arguments specified with the DEFINE directive, are not case sensitive.
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