Thanks for your quick answer!

Actually I tried to simulate the sdcc .cod file with gpsim and it worked ok.
I also tried to compare .hex files with gpdasm but couldn't find what can be 
wrong with the sdcc's one.
I guess I should give it another try.

Is there any tools that simulate PIC's behaviour from .hex files ?
I mean a tool that shows content of registers and memory at a particular point 
of the program, and the flow of executed instructions ?
For my simple program i'll try to do it by hand, but for larger program it 
could be usefull.

thx !

Le 22 janv. 2014 à 22:11, Bodo Wenzel a écrit :

> Hi Ael,
> 
> Assuming that you are trying to gain some experience, I'd recommend to
> look into the assembler listings of both programs. If there is no
> listing you have to disassemble.
> 
> Armed with the datasheet you will be able to investigate the problem.
> 
> Good luck!
> Bodo
> 
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