FREDRIK HULDTGREN wrote :

> It doesnt seem as if we are able to change TOS on our 18F458 PIC. When
> the following code has been done, the right numbers havent been placed
> on TOS.

How do you know ?

>       temp =26;
>      _asm movf temp,0,1 _endasm
>      _asm movwf TOSL,1 _endasm

This doesn't look as assembler, what tool are you using ?

> It doesnt work for TOSU,TOSL,or TOSH.

> We've included the p18f458.h file.

Can not see it...

> Any clues as to what we are doing wrong?

What *are* you trying to do ?

That is, why do you need to updat the stack pointer ?
Since this *looks* like some HLL, I'd expect the stack pointer
to move around in a rather uncontrollered way, only known to the
"inside" of the actual compiler in use. Are you sure that the
_asm end _endasm compiler directives (?) doesn't change
the TOS themselfs ?

Tell us a bit more about what you are trying to do, and why
you need to do it that way, and everything will probably be
easier to understand and to answer.

Jan-Erik.

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