GOSUB and change slot

Archiver

Hi,
I use Stamp2p 40.
I use the GOSUB instrution in slot 0, and then with RUN 1
change to slot1, running my program1, then go back to slot 0,
with a flag going in the GOSUB instruction
and terminate with RETURN.
...........................
The Stamp1 use b12 and b13 for the GOSUB instruction
How dos the stamp2p manage? I did not find out.
Do I have to backup und restore the address for GOSUB?
And where in the memory is it saved?.
If somebody would like to explain or give a link
I am thankful Heinz

Archiver

You should plan your programs so that you don't change slots in the middle of
a subroutine as there is no way to manually manipulate the RETURN address
stack in the Stamp.

-- Jon Williams
-- Parallax


In a message dated 2/11/02 5:40:28 AM Central Standard Time, hschwenk@g...
writes:


> I use Stamp2p 40.
> I use the GOSUB instrution in slot 0, and then with RUN 1
> change to slot1, running my program1, then go back to slot 0,
> with a flag going in the GOSUB instruction
> and terminate with RETURN.
> ...........................
> The Stamp1 use b12 and b13 for the GOSUB instruction
> How dos the stamp2p manage? I did not find out.
> Do I have to backup und restore the address for GOSUB?
> And where in the memory is it saved?.
> If somebody would like to explain or give a link
> I am thankful




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