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wishmaster



Joined: 25 Aug 2004
Posts: 9
wishmaster
Hello, i am new at Assembler and FASM. I have a question, for what is the "virtual at" instruction ? Thanks for help Smile
Bye.
Post 25 Aug 2004, 14:28
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
first you need to understand what is "virtual" for. It doesn't really define data, it only defines symbols (labels, numeric constants) as if the data was defined. For example
Code:
virtual
  x1 = 1
  x2 db 5
  x3 db 'aaaaaaaa',0
end virtual
    

only defines symbols x1, x2 and x3, no data is defined.

"at" behind "virtual" just allows you to change origin of labels, "virtual at XXX" is same as
Code:
  virtual
  org XXX
    

or
Code:
  virtual
  $ = XXX
    
Post 25 Aug 2004, 18:14
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