AVR-Chat

I found the problem. It was on another part of the code.

	Thanks,
	Mark Jordan

On 29 Sep 2006 at 11:44, David VanHorn wrote:

> >
> >        Hi David, thanks for the explanation.
> >        My problem is how to find the LPM passed the end of table
> > by looking at the ZH:ZL register.
> 
> 
> Ah.  Ok.
> 
> Normally, I use null terminated strings, and tables of definite length, so I
> haven't had to do that in a while.
> 
> 
>        I tried the code below, but it is not working:
> >
> > read:
> >        lpm register, Z+
> >
> >        ldi temp, high(ENDTABLE*2)
> >        cp ZL, low(ENTABLE*2)
> >        cpc ZH, temp
> >        brlo read
> 
> 
> 
> damn gmail, can't use tabs..
> 
> ldi  YL,low(EndTable*2)
> ldi  YH,high(EndTable*2)
> sub YL,ZL
> sub YH,ZH   ;If addresses are equal, then result is 0000h
> or  YL,YH    ;single byte, we don't care what it is, as long as it's <>0
> and  YL,YL  ;May not be needed, if Or sets the Z flag, I don't remember
> offhand
> breq wherever
> 
> 
> [Non-text portions of this message have been removed]
> 
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