DC,DEFM,FCC
  Format  DC /  /
  DEFM /  /
  FCC /  / 

 Description  The character string is an ASCII code and the value is stored in memory.
:  The symbol surrounding the character string does not have to be / (slash), but the first symbol is always
 Must be the last . 

 [Example] 
   

DS, DEFS, RMB
  Format  DS 
  DEFS 
  RMB  

 Description  Space for the number of bytes specified in  is secured in memory.
 <  must be an absolute expression whose value has already been determined. 

 [Example] 
   

 
 MACRO ~ ENDM 
  format   MACRO argument ...,
 
  ENDM 

 Description  Macro definition is performed between MACRO and ENDM.
.   restrictions are the same as for normal labels.