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Re: Executing code in boot page from application page

2008-04-09 by Lee

Hi Dave/Don,
Thanks for input!
Dave-
Yes RAMPZ is used in the ATMEga128 and I have previously tried setting  
that before "call"ing the jump table in the bootpage.
I have also previously tried various Fuse configurations.
Neither gave success?

Don-
I used "call" rather then jmp, because I need to return to the application  
program.  I have also used "icall" after setting Z reg which also fails.  
(definitily not Relative calls)


The simulator also does not want to go to the bootpage. ( but then  
simulators are not always perfect).

I will contimnue to research this problem until I get a definitive answer  
as it seems a neat way to implement lots of utilities in an area that  
would other wise go wasted.

I do not find the ATMega128 data sheet all that clear in this regard.

73/best regards

Lee de Vries



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