Re: [hatari-devel] Allowing/supporting additional ST-RAM amounts?

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 03/04/2020 à 23:05, Eero Tamminen a écrit :
> Hi,
>
> What else than the attached patch is needed to properly support 
> additional ST-RAM amount?
>
> I'm asking because the real max ST-RAM limit for TT and MegaSTE machines 
> is 10MB (not 8MB nor 14MB that Hatari currently allows).
>
> There e.g. seems to be this magic for Falcon:
> https://git.tuxfamily.org/hatari/hatari.git/tree/src/stMemory.c#n388
>
> So I'm wondering whether the memory validation should actually be done 
> per machine, instead of using same validation for all of them?

Hi

well it depends, some machine are HW limited (for example a real Falcon 
can't have TT RAM except if changing the cpu for a 32 bit address 
version), so same for ST RAM, we allow some amount that might not be 
possible on real HW as a convenience.

As we allow TT RAM for "basic" Falcon where it should not exist in fact, 
should be really limit ST RAM amount to real case values ? Or do you 
have a case where this gives a problem / bug ?

Nicolas