 Cx51 User's Guide | |
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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 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 AppendixOMF2 Compiler Directive
| Abbreviation | O2 | |
| Arguments | None. | |
| Default | The C51 Compiler, by default, generates Intel OMF51 object modules. The CX51 Compiler, by default, generates OMF2 object modules. | |
| µVision | Project — Select Device — Use LX51 instead of BL51. | |
| Description | The OMF2 directive enables the OMF2 file format which provides detailed symbol type checking across modules and eliminates the historic limitations of the Intel OMF51 file format. The OMF2 file format is required to use the following features of the Cx51 Compiler:
The OMF2 file format requires the extended LX51 Linker/Locater and cannot be used with the BL51 Linker/Locater. | |
| Example |
C51 SAMPLE.C OMF2 #pragma O2 |
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