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Directive Summary

The following summary is the directives supported by MPASM. MPASM has 58 kinds of directives. [ ] : Optional Arguments expr : Expression < > : Variables. Text you supply : Space | : An OR selection Directive Description Syntax _ _BADRAM Specify invalid RAM locations _ _badram<expr>[-<expr>][,<expr>[-<expr>]] BANKISEL Generate RAM bank selecting code for indirect addressing bankisel<label> BANKSEL Generate RAM bank selecting code banksel<label> CBLOCK Define a Block Constants cblock[<expr>] ENDC endc CODE Begins executable code section [<name>]code[<address>] _ _CONFIG Specify configuration bits _ _config<expr> CONSTANT Declare Symbol Constant constant<label>[=<expr>,...,<label>[=<expr>]] DA Store Strings in Program Memory [<label>]da<expr>[,<expr>,...,<expr>] DATA Create Numeric and Text Data [<label>]data<expr>[,<expr>,...,<expr>] [<label>]data"<text_string>"[,"<text_string>",...] DB Declare Data of One Byte [<label>]db<expr>[,<expr>,...,<expr>] [<label>]db"<text_string>"[,"<text_string>",...] DE Define EEPROM Data [<label>]de<expr>[,<expr>,...,<expr>] [<label>]de"<text_string>"[,"<text_string>",...] #DEFINE Define a text Substitution Label #define<name>[<value>] #define<name>[<arg>,...,<arg>]<value> #UNDEFINE Delete a Substitution Label #undefine<label> DT Define Table [<label>]dt<expr>[,<expr>,...,<expr>] [<label>]dt"<text_string>"[,"<text_string>",...] DW Declare Data of One Word [<label>]dw<expr>[,<expr>,...,<expr>] [<label>]dw"<text_string>"[,"<text_string>",...] END End Program Block end EQU Define an Assembly Constant <label>equ<expr> ERROR Issue an Error Message error"<text_string>" ERRORLEVEL Set Error Level errorlevel"0|1|2 <+|-><message_number>" EXITM Exit from a Macro exitm EXPAND Expand Macro Listing expand NOEXPAND Turn off Macro Expansion noexpand EXTERN Declares an external label extern<label>[,<label>] FILL Fill Memory [<label>]fill<expr>,<count> GLOBAL Exports a defined label global<label>[,<label>] IDATA Begin initialized data section [<name>]idata[<address>] _ _IDLOCS Specify ID locations _ _idlocs<expr> #IF Begin Conditionally Assembled Code Block #if<expr> #ELSE Begin Alternative Assembly Block to IF #else #ENDIF End conditional Assembly Block #endif #IFDEF Execute if Symbol has Been Defined #ifdef<label> #IFNDEF Execute if Symbol has not Been Defined #ifndef<label> INCLUDE Include Additional Source File include<<include_file>>|"<include_file>" LIST Listing Options list[<list_optin>,...,<list_option>] NOLIST Turn off Listing Output nolist LOCAL Declare Local Macro Variable local<label>[,<label>] MACRO Declare Macro Definition <label>macro[<arg>,...,<arg>] ENDM End a Macro Definition endm _ _MAXRAM Specify maximum RAM address _ _maxram<expr> MESSG Create User Defined Message messg"<message_text>" ORG Set Program Origin [<label>]org<expr> PAGE Insert Listing Page Eject page PAGESEL Generate ROM page selecting code pagesel<label> PROCESSOR Set Processor Type processor<processor_type> RADIX Specify Default Radix radix<default_radix> RES Reserve Memory [<label>]res<mem_units> SET Define an Assembler Variable <label>set<expr> SPACE Insert Blank Listing Lines space<expr> TITLE Specify Program Title title"<title_text>" SUBTITLE Specify Program Subtitle subtitle"<sub_text>" UDATA Begin uninitialized data section [<name>]udata[<address>] UDATA_ACS Begins access uninitialized data section [<name>]udata_acs[<address>] UDATA_OVR Begin overlayed uninitialized data section [<name>]udata_ovr[<address>] UDATA_SHR Begin shared uninitialized data section [<name>]udata_shr[<address>] VARIABLE Declare Symbol Variable variable<label>[=<expr>,...,<label>[=<expr>]] WHILE Perform Loop While Condition is True while<expr> ENDW End a While Loop endw