RE: A83: Question About Storing Words (.dw)

To: assembly-83@lists.ticalc.org
Subject: RE: A83: Question About Storing Words (.dw)
From: Sebastiaan Roodenburg <s_roodenburg@hotmail.com>
Date: Mon, 07 Jun 1999 03:21:33 PDT
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
Delivered-To: assembly-83@lists.ticalc.org
Reply-To: assembly-83@lists.ticalc.org


>I saw this message, and I remembered that I wanted to find out how the .dw
>statements work. Could someone please tell me how to use them and what they
>are used for?

.dw tels the compiler you want to allocate some space to store a word(2 
bytes), just like .db allocates some space for a byte. You can use this as 
var's:

;-------------------------------------
      ld a,(byte)          ; a now contains the value stored in 'byte'
      inc a                ; a+1->a  (a=5)
      ld (byte),a          ; put a back to 'byte'
      ld hl,2345h          ; load 2345h into hl
      ld (word),hl         ; save hl to 'word'
      ret                  ; return before data, else the Z80 will
                           ; continue prosessing our data --> calc
                           ; will crash
byte: .db 4
word: .dw 1234h
;-------------------------------------

hope this helps!

Sebastiaan


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