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C251 User's Guide
C251 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 ASM ASMEXPAND BROWSE CODE COND DEBUG DEFINE DISABLE EJECT ENDASM FIXDRK FLOAT64 FLOATFUZZY FUNCTIONS HOLD HPTR INCDIR INTERVAL INTR2 INTVECTOR LARGE LISTINCLUDE MAXARGS MODBIN NAME NOALIAS NOAMAKE NOASMEXPAND NOCASE NOCOND NOEXTEND NOINTVECTOR NOOBJECT NOPRINT NOREGPARMS NVM_CONST OBJECT OBJECTADVANCED OPTIMIZE ORDER PACK PAGELENGTH PAGEWIDTH PARM251 PARM51 PREPRINT PREPRINTONLY PRINT REGFILE REGPARMS RENAMECODE RESTORE ROM SAVE SMALL SRC STRING SYMBOLS TABS TINY UNSIGNED_CHAR USERCLASS WARNING WARNINGLEVEL XSMALL XTINY Language Extensions Preprocessor Advanced Programming Error Messages Library Reference AppendixINTVECTOR Compiler Directive
| Abbreviation | IV | ||||||
| Arguments | An optional offset, in parentheses, for the interrupt vector table. | ||||||
| Default | INTVECTOR (0) | ||||||
| µVision | Options — C251 — Interrupt vectors at address. | ||||||
| Description | The INTVECTOR directive instructs the compiler to generate interrupt vectors for functions which require them. An offset may be entered if the vector table starts at an address other than 0. The range for this offset is 0 .. 65535. The compiler generates interrupt vectors using either AJMP, LJMP, or EJMP instructions (depending on the size of the program memory specified with the ROM directive). Vectors are located starting at absolute address: (n * interval) + offset + 3 where:
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| Example |
C251 SAMPLE.C INTVECTOR(0x8000)
#pragma iv(0x8000)
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