[Coco] GIME Question

[Darren A.]

I tried many different configurations of FF90 and FFDE/F. It appears that 
the GIME is ALWAYS directing addresses $FFF0 - $FFFF to those same addresses 
in the Internal ROM (never to $BFF0 - $BFFF).

Darren

--------------

>From: Arthur Flexser
>
>Were you in ROM mode when you compared the contents of $BFF0 and $FFF0?
>
>To access ROM mode there, you may need not only to poke $FFDE, but also 
>diddle
>the "constant RAM at $FE00" bit in one of the GIME registers.  (The latter
>requires disabling the IRQ first -- POKE &HFF03,&H34 -- to avoid a crash.)
>
>Art
>
>
>On Sun, 10 Jun 2007, Darren A. wrote:
>
> > The SAM in the CoCo 1/2 maps addresses $FFF0 - $FFFF (interrupt/reset
> > vectors) to $BFF0 - $BFFF (End of Color Basic ROM). Does the GIME not 
>mimic
> > this behavior? On a CoCo 3, PEEKing at &HFFF0 returns a different value 
>than
> > a PEEK at &HBFF0.
> >
> >
> > Darren
> >

_________________________________________________________________
Play games, earn tickets, get cool prizes. Play now–it's FREE! 
http://club.live.com/home.aspx?icid=CLUB_hotmailtextlink1