Re: [Sdcc-user] Pointer to SFR

[Karl B. <ka...@tu...>]

Hi Lanius,

The instructions used to access SFR's
are embedded in the instruction, there is
no way to do it indirectly.  So you cannot
make a construct that acts as a pointer to SFR.

You can do it with self-modifying code if you
are running from RAM, but it's not too often
you run from RAM with MCS51.

So probably a big case statement is your best
bet, or the equivalent optimized in asm.

Karl.


Lanius wrote:

>Hi,
>
>i want to display all *SFR-Register in a loop like:
>
>for(FSR=firstSFR;SFR<=lastFSR; FSR++)
>{
>    x= *FSR;
>    putChar(x);
>}
>
>how to?
>
>
>bis denn...
>Rainer Stamm
>
>
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