(as) Z80 Directives

Info Catalog

(as) Z80 Floating Point

(as) Z80-Dependent

(as) Z80 Opcodes

 
 9.36.4 Z80 Assembler Directives
 -------------------------------
 
 `as' for the Z80 supports some additional directives for compatibility
 with other assemblers.
 
    These are the additional directives in `as' for the Z80:
 
 `db EXPRESSION|STRING[,EXPRESSION|STRING...]'
 `defb EXPRESSION|STRING[,EXPRESSION|STRING...]'
      For each STRING the characters are copied to the object file, for
      each other EXPRESSION the value is stored in one byte.  A warning
      is issued in case of an overflow.
 
 `dw EXPRESSION[,EXPRESSION...]'
 `defw EXPRESSION[,EXPRESSION...]'
      For each EXPRESSION the value is stored in two bytes, ignoring
      overflow.
 
 `d24 EXPRESSION[,EXPRESSION...]'
 `def24 EXPRESSION[,EXPRESSION...]'
      For each EXPRESSION the value is stored in three bytes, ignoring
      overflow.
 
 `d32 EXPRESSION[,EXPRESSION...]'
 `def32 EXPRESSION[,EXPRESSION...]'
      For each EXPRESSION the value is stored in four bytes, ignoring
      overflow.
 
 `ds COUNT[, VALUE]'
 `defs COUNT[, VALUE]'
      Fill COUNT bytes in the object file with VALUE, if VALUE is
      omitted it defaults to zero.
 
 `SYMBOL equ EXPRESSION'
 `SYMBOL defl EXPRESSION'
      These directives set the value of SYMBOL to EXPRESSION. If `equ'
      is used, it is an error if SYMBOL is already defined.  Symbols
      defined with `equ' are not protected from redefinition.
 
 `set'
      This is a normal instruction on Z80, and not an assembler
      directive.
 
 `psect NAME'
      A synonym for  Section, no second argument should be given.
 
 

Info Catalog

(as) Z80 Floating Point

(as) Z80-Dependent

(as) Z80 Opcodes