[Coco] GIME behavior

[Darren A]

On 4/13/11, Mark Marlette wrote:
>
> Lucky, no way.....Luck and magic, not here, designed, engineered. Boisy is
> the software guy. There is a method to this as I recall but has at least
> been a year if not more since I looked at this. I will have to go look at my
> notes from my test code. Not going to happen for at least another ~20hrs
> when playtime comes around again.....
>
> This a REALLY important address for the games we play at C-9 with the
> hardware.
>
> So if you can't mode change then you might want to explain a bit more on
> your project as I don't quite follow the design. If this is going to be a
> product and you don't want to be detailed. I understand as I hope you will
> as well.
>

---

I am tracking $FF90 in my hardware so that I can make the mode change
and restore it later.  The problem was that I wanted to use the same
address ($FF90) to read the tracked state.  Since this does not appear
to be possible I will have to proceed by using an address outside the
GIME range.

If you can describe some other method to obtain the value in $FF90
without having to go to this extra effort then that would be much
appreciated.

Darren