Hello Erich,

Thanks again for your help. I managed to modify applturnkey to read
from internal EEPROM, which was the missing part of my project to have
AmForth use the RC oscillator as a clock source. 

kind regards,

Tristan

On 08Aug19 19:47, Erich Wälde wrote:
> Hello Tristan,
> 
> 
> >
> > In avr8/amforth-eeprom.inc the top line is
> >
> >     .dw -1           ; EEPROM Address 0 should not be used
> >
> > Does this mean that $0 is reserved and used by AmForth internally or
> > $0 is not to be used because historically it has been used by other
> > programs e.g. storing calibrated OSCCAL value? If it is the latter,
> > then it would be very opportune.
> 
> If my memory serves me well, some toolchains keep track of the
> number of erase cycles they did, or something such. I do not
> know why Matthias has chosen to not use addr 0. But I do not use
> it either. Once I have defined an new label at the end, and
> used it somewhere else, I tend to forget, where it was. Because
> I never have do deal with this address again.
> 
> So, imho not important.
> 
> Cheers, and good luck!
> Erich
> 
> 
> -- 
> May the Forth be with you ...
> 
> 
> _______________________________________________
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> Amforth-devel@lists.sourceforge.net
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> 


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