Re: [hatari-devel] a rare F030 incompatibility

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 16/10/2015 10:52, Douglas Little a écrit :
> Hi,
>
> I was testing some old stuff (a prototype version of Apex) and noticed
> that it won't run under Hatari - it throws bus errors immediately.
>
> The same program runs ok on my F030.
>
> Looking more closely, the the code is checking for a HW digitizer using
> an unusual address range:
>
> *-------------------------------------------------------*
>
> DIGICTRL        =    $FFF20000
> DIGIPAGE        =    $FFF40000
>
>
>
> I think this was the address space for the F030 Expose digitizer which I
> did support in a few programs.
>
> I don't know if anyone else still has one of these - or more
> importantly, how many programs will try to check for it - but it might
> be nice to make that space readable in supervisor mode, as seems to be
> the case on real HW.

Hi

do you have some pointer to some doc describing this memory area ? Or 
maybe it's specific to this board which uses MMU to map its register 
between f20000 and f40000 ?

Nicolas