AVR-Chat

----- Original Message ----- 
From: "Alex De Lara" <alex_de_lara@yahoo.com>
To: <AVR-Chat@yahoogroups.com>
Sent: Wednesday, June 15, 2005 1:43 AM
Subject: [AVR-Chat] This assembly oughta be something silly...


> Ok, this must be something idiotic that I cannot figure out.
> The Z register is being properly loaded with the correct
> address of the string, but the string's bytes are never
> loaded in r16. 
> Why it always gets 0xff ? Obviously it is reading from 
> somewhere else :-)
> What's the trick ? 

IIRC, you have to multiply the string address by two:

  ldi     ZH,high(Test_str*2)  ; Load Z register high    
    ldi     ZL,low(Test_str*2)   ; Load Z register low

There is an app. note on this.

Leon



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