Re: [hatari-devel] Blitting from TT RAM seems to work on Falcon?

[Thomas Huth <th.huth@xxxxxxxxx>]

On 10/10/2023 18.08, Nicolas Pomarède wrote:
> Le 10/10/2023 à 08:28, Anders Eriksson a écrit :
>
> > Hi,
> >
> > no you can't use blitter from Afterburner or CT2 TT-RAM (as well as CT60/3).
> >
> > However there are some memory cards/accelerators where the "TT-RAM" lies 
> > within the lower 24-bit memory space. It's been quite some time but I 
> > think one is called Magnum and the other Falcon FX. I'm not sure if the 
> > blitter works though.
>
> Hi
>
> thanks for the confirmation, this wrong case has been removed from devel 
> version.

Have you tested it? I now get distorted graphics now if I run TOS 4.04 in 
Falcon mode with TT-RAM enabled. IIRC TOS 4.04 blindly assumes that all 
memory is usable by the blitter and does not avoid the TT-RAM for buffers 
that are used by the blitter. That was likely the reason for the code that 
we had there.
I assume that CT2 or Afterburner patch the TOS so that it does not use the 
TT-RAM for the VDI?

 Thomas