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 -- Using Opera e-mail client
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Re: Executing code in boot page from application page
2008-04-09 by Lee
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